Fellows
/Senior Distinguished
Researchers
/Distinguished
Researchers

Senior Distinguished Researcher Hideki Yamamoto
  • Senior Distinguished Researcher

    Hideki Yamamoto

  • NTT Basic Research Laboratories

▶ To the interview

Design and thin-film synthesis of novel superconductors and magnetic materials along with elucidation of the underlying physics

Toward creation of trailblazing superconductors and magnetic materials beyond conventional concepts based on the NTT-developed advanced thin-film growth technologies

In this page

Awards

  • JSAP (Japan Society of Applied Physics) The Young Scientist Presentation Award (1997)
  • ISPlasma2014/IC-PLANTS2014 Best Presentation Award (2014)
  • The Society of Non-Traditional Technology, Superconductivity Science and Technology Award (2016)

Academic Activities

  • Editorial board member of "Surface Science", The Japan Society of Surface Science (1998-2000)
  • Proposal adjudicator of European Research Council (2011)
  • Program committee member of The Japanese Society of Applied Physics (2013-2015)
  • Editorial board member of "Japanese Journal of Applied Physics/Applied Physics Express" (2015-2016)
  • Program committee member of SPIE Photonics West (2014-)
  • Adjudicator of Swiss National Science Foundation(2024)

Visiting Professor

  • Visiting Scholar, Geballe Laboratory for Advanced Materials, Stanford University (2004-2005)
  • Invited academic, Nagoya University (2010-2011)
  • Invited academic, Osaka University (2013-2014)
  • Adjunct lecturer, Niigata University (2014-2015)

Publications

Books

  • Growth and properties of La-214 thin films, in "Studies of High Temperature Superconductors Vol.34: Organic Superconductors and More on Stripe Phase in Cuprates", A. V. Narlikar ed. (Nova Science Publishers, 2000)
  • Comprehending high temperature superconductivity: A study on 214-type cuprate superconductor thin films, in "Magnetic Mechanism of Superconductivity in Copper Oxide", Tanmoy Das ed. (Nova Science Publishers, 2011)
  • Epitaxial Growth of Superconducting Oxides, in "Epitaxial Growth of Complex Metal Oxides", G. Koster, M. Huijben, and G. Rijnders eds. (Woodhead Publishing, 2015), 2nd edition (Elsevier, 2022)
  • Electronic structure of high-Tc superconductors: photoemission spectroscopy, in "High-Tc superconductivity Vol.1: materials and physics", The Japan Society of Applied Physics ed. (2013, 2nd edition) (in Japanese).

NTT Technical Review

Papers

  1. T. Shimada, H. Yamamoto, K. Saiki, and A. Koma: RHEED Intensity Oscillation during Epitaxial Growth of Layered Materials, Japanese Journal of Applied Physics. 29, L2096-L2098 (1990).
  2. H. Yamamoto, K. Yoshii, K. Saiki, and A. Koma: Improved heteroepitaxial growth of layered NbSe2 on GaAs(111)B, Journal of Vacuum Science and Technology A 12, 125-129 (1994).
  3. T. Shimada, Y. Furukawa, E. Arakawa, K. Takeshita, T. Matsushita, H. Yamamoto, and A. Koma: Surface Determination of ultrathin NbSe2 films by grazing incidence X-ray diffraction, Solid State Communications 89, 583-586 (1994).
  4. H. Yamamoto, H. Tada, T. Kawaguchi, and A. Koma: Epitaxial growth of metal-phthalocyanines on selenium-terminated GaAs(111) surfaces, Applied Physics Letters 64, 2099-2101 (1994).
  5. K. Yoshii, H. Yamamoto, K. Saiki, and A. Koma: Superconductivity and electrical properties in single-crystalline ultrathin Nb films grown by molecular-beam epitaxy, Physical Review B 52, 13570-13575 (1995).
  6. T. Ueno, H. Yamamoto, K. Saiki, and A. Koma: van der Waals epitaxy of metal dihalide, Applied Surface Science 113/114, 33-37 (1997).
  7. H. Yamamoto, M. Naito, and H. Sato: A new superconducting cuprate prepared by low-temperature thin-film synthesis in a Ba-Cu-O system, Japanese Journal of Applied Physics 36 L341- L344 (1997).
  8. H. Sato, H. Yamamoto, and M. Naito: Growth of (001) La1.85Sr0.15CuO4 ultrathin films without buffer or cap layers, Physica C 274, 227-231 (1997).
  9. H. Yamamoto, M. Naito, and H. Sato: Surface and interface study on MBE-grown Nd1.85Ce0.15CuO4 thin films by photoemission spectroscopy and tunneling spectroscopy, Physical Review B 56, 2852-2859 (1997).
  10. H. Sato, M. Naito, and H. Yamamoto: Superconducting thin films of La2CuO4+δ by oxygen doping using ozone, Physica C 280, 178-186 (1997).
  11. H. Sato, H. Yamamoto, and M. Naito: La2-xSrxCuO4 thin films grown by reactive coevaporation, Advances in Superconductivity IX, Proceedings of 9th International Symposium on Superconductivity, Sapporo, 1996, (Springer-Verlag, Tokyo), pp1005-1010 (1997).
  12. M. Naito, H. Yamamoto, and H. Sato: Surface and interface study on MBE-grown Nd1.85Ce0.15CuO4 thin films by photoemission spectroscopy and tunneling spectroscopy, Physica C 282-287 965-966 (1997).
  13. H. Yamamoto, M. Naito, and H. Sato: Surface stability of MBE-grown Nd1.85Ce0.15CuO4 thin films in air investigated by RHEED, XPS, and UPS, Physica C 291, 67-72 (1997).
  14. M. Naito, H. Sato, and H. Yamamoto: MBE growth of (La,Sr)2CuO4 and (Nd,Ce)2CuO4 thin films, Physica C 293, 36-43 (1997).
  15. M. Naito, H. Yamamoto, and H. Sato: Reflection high-energy electron diffraction and atomic force microscopy studies on homoepitaxial growth of SrTiO3, Physica C 305, 233-250 (1998).
  16. H. Yamamoto, M. Naito, and H. Sato: A new superconducting cuprate prepared by low-temperature thin-film synthesis, Advances in Superconductivity X, Proceedings of 10th International Symposium on Superconductivity (Springer-Verlag, Tokyo), pp965-970 (1998).
  17. H. Sato, H. Yamamoto, and M. Naito: Growth of La2-xSrxCuO4 and La2CuO4+δ thin films by reactive coevaporation, Materials Research Society Symposium Proceedings 502, 203-208 (1998).
  18. M. Naito, H. Sato, and H. Yamamoto: Oxygen nonstoichiometry of MBE-grown cuprate films to lose or give high-Tc superconductivity", Superconducting and Related Oxides: Physics and Nanoengineering III, Proceedings of SPIE 3481, (SPIE, Bellingham), pp.214-225 (1998).
  19. M. Naito, H. Yamamoto, and H. Sato: Intrinsic problem of cuprate surface and interface: why good tunnel junctions are difficult to fabricate, Physica C 335, 201-206 (2000).
  20. H. Yamamoto, M. Naito, and H. Sato: A new superconducting barium cuprate prepared by molecular beam epitaxy, Physica C 338, 29-37 (2000).
  21. M. Naito, S. Karimoto, and H. Yamamoto, New superconducting lead cuprates prepared by molecular beam epitaxy, Superconducting and Related Oxides: Physics and Nanoengineering IV, Proceedings of SPIE 4058 (SPIE, Bellingham), pp119-128 (2000).
  22. M. Naito, S. Karimoto, H. Yamamoto, H. Nakada, and K. Suzuki: Production of double-sided large-area high-Tc wafers by molecular beam epitaxy, IEEE Transactions on Applied Superconductivity 11, 3848-3851 (2001).
  23. S. Karimoto, H. Yamamoto, T. Greibe, and M. Naito: New superconducting Sr2CuO4-δ thin films prepared by molecular beam epitaxy, Japanese Journal of Applied Physics 40 L127-L130 (2001).
  24. H. Yamamoto, K. Aoki, and M. Naito: Synthesis of superconducting FeSr2YCu2Oy thin films, Physica C 378-381, 52-55 (2002).
  25. K. Ueda, H. Yamamoto, and M. Naito: Synthesis and photoemission study of as-grown superconducting MgB2 thin films, Physica C 378-381, 225-228 (2002).
  26. S. Karimoto, H. Yamamoto, H. Sato, A. Tsukada, and M. Naito: Tc versus lattice constants in MBE-grown M2CuO4 (M = La, Sr, Ba), Journal of Low Temperature Physics 131, 619-623 (2003).
  27. M. Naito, A. Tsukada, Y. Krockenberger, S. Karimoto, and H. Yamamoto: MBE Growth of "electron-doped" cuprates, Materials Research Society Symposium Proceedings EXS-3, 217-219 (2003).
  28. H. Yamamoto, M. Naito, A. Tsukada, and S. Suzuki: In-situ angle-resolved photoemission study of MBE-grown (La, Ce)2CuO4 thin films, Physica C 412-414, 134-138 (2004).
  29. H. Yamamoto, K. Aoki, A. Tsukada, and M. Naito: Growth of Ba1-xKxBiO3 thin films by molecular beam epitaxy, Physica C 412-414, 192-195 (2004).
  30. A. Tsukada, Y. Krockenberger, M. Noda, H. Yamamoto, D. Manske, L. Alff, and M. Naito: New class of T'-structure cuprate superconductors, Solid State Communications 133, 427-431 (2005).
  31. M. Noda, A. Tsukada, H. Yamamoto, and M. Naito: Origin of superconducting carriers in "non-doped" T'-(La, RE)2CuO4 (RE = Sm, Eu, Gd, Tb, Lu, and Y) prepared by molecular beam epitaxy, Physica C 426-431, 220-224 (2005).
  32. A. Tsukada, H. Yamamoto, and M. Naito: Ce doping in T-La2CuO4 films: Broken electron-hole symmetry for high-Tc superconductivity, Physica C 426-431, 454-458 (2005).
  33. A. Tsukada, M. Noda, H. Yamamoto, and M. Naito: Role of impurity oxygen in superconductivity of "non-doped" T'-(La, RE)2CuO4, Physica C 426-431, 459-463 (2005).
  34. S. Suzuki, H. Yamamoto, F. Maeda, Y. Watanabe, K. Yamada, and T. Kiyokura, Beamline for angle-resolved photoemission spectroscopy at low-temperature constructed at NTT Atsugi R&D Center, Jounal of Electron Spectroscopy and Related Phenomena 144, 1109-1112 (2005).
  35. A. Tsukada, H. Shibata, M. Noda, H. Yamamoto, and M. Naito: Charge transfer gap for T'-RE2CuO4 and T-RE2CuO4 as estimated from Madelung potential calculations, Physica C 445-448, 94-96 (2006).
  36. A. Tsukada, H. Yamamoto, and M. Naito: Doping of Ce in T-La2CuO4: rigorous test for electron-hole symmetry for high-Tc superconductivity, Physical Review B 74, 174515/1-8 (2006).
  37. A. Tsukada, M. Naito, and H. Yamamoto: Valence of Ce in T- and T'-La2-xCexCuO4, Physica C 463-465, 64-67 (2007).
  38. W. Siemons, G. Koster, H. Yamamoto, W. A. Harrison, G. Lucovsky, T. H. Geballe, D. H. Blank, and M. R. Beasley: Origin of charge density at LaAlO3 on SrTiO3 heterointerfaces: possibility of intrinsic doping, Physical Review Letters 98, 196802/1-4 (2007).
  39. W. Siemons, G. Koster, A. Vailionis, H. Yamamoto, D. H. Blank, and M. R. Beasley: Dependence of the electronic structure of SrRuO3 and its degree of correlation on cation off-stoichiometry, Physical Review B 76, 075126/1-6 (2007).
  40. W. Siemons, G. Koster, H. Yamamoto, T. H. Geballe, D. H. Blank, and M. R. Beasley: Experimental investigation of electronic properties of buried heterointerfaces of LaAlO3 on SrTiO3, Physical Review B 76, 155111/1-5 (2007).
  41. O. Matsumoto, A. Utsuki, A. Tsukada, H. Yamamoto, T. Manabe, and M. Naito: Superconductivity in undoped T'-RE2CuO4 with Tc over 30 K, Physica C 468, 1148-1151 (2008).
  42. M. Naito, O. Matsumoto, A. Utsuki, A. Tsukada, H. Yamamoto, and T. Manabe: Undoped cuprate superconductors--band superconductors or oxygen-doped Mott-Hubbard superconductors?, Journal of Physics: Conference Series 108, 012037/1-6 (2008).
  43. O. Matsumoto, A. Utsuki, A. Tsukada, H. Yamamoto, T. Manabe, and M. Naito: Synthesis and properties of superconducting T'-R2CuO4 (R = Pr, Nd, Sm, Eu, Gd), Physical Review B 79, 100508R/1-4 (2009).
  44. O. Matsumoto, A. Utsuki, A. Tsukada, H. Yamamoto, T. Manabe, and M. Naito: Generic phase diagram of "electron-doped" T' cuprates, Physica C 469, 924-927 (2009).
  45. O. Matsumoto, A. Utsuki, A. Tsukada, H. Yamamoto, T. Manabe, and M. Naito: Reduction dependence of superconductivity in the end-member T' cuprates, Physica C 469, 940-943 (2009).
  46. O. Matsumoto, A. Tsukada, H. Yamamoto, and M. Naito: Generic phase diagram of Nd2-xCexCuO4, Physica C 470, s101-s103 (2010).
  47. H. Yamamoto, A. Tsukada, O. Matsumoto, and M. Naito: Preparation of superconducting parent compounds T'-RE2CuO4 by molecular beam epitaxy, Physica C 470, s88-s89 (2010).
  48. H. Yamamoto, O. Matsumoto, A. Tsukada, and M. Naito, MBE growth and properties of T'-La2CuO4 thin films, Physica C 470, 1025-1028 (2010).
  49. O. Matsumoto, A. Tsukada, H. Yamamoto, and M. Naito: Material characterization of superconducting T'-Nd2CuO4 films synthesized by metal organic decomposition, Physica C 470, 1029-1032 (2010).
  50. Y. Krockenberger and H. Yamamoto: Growth of infinite-layer (Sr, Nd)CuO2 films by MBE, Physica C 471, 185-187 (2011).
  51. H. Yamamoto, O. Matsumoto, Y. Krockenberger, K. Yamagami, and M. Naito: Molecular beam epitaxy of superconducting Pr2CuO4 films, Solid State Communications 151, 771-774 (2011).
  52. A. Ikeda, O. Matsumoto, H. Yamamoto, T. Manabe, and M. Naito: RE dependence of superconductivity in parent T'-RE2CuO4, Physica C 471, 686-689 (2011).
  53. Y. Krockenberger, H. Yamamoto, M. Mitsuhashi, and M. Naito: Universal Superconducting Ground State in Nd1.85Ce0.15CuO4 and Nd2CuO4, Japanese Journal of Applied Physics 51, 010106/1-4 (2012).
  54. Y. Krockenberger, K. Sakuma, and H. Yamamoto: Molecular beam epitaxy and transport properties of infinite-layer Sr0.90La0.10CuO2 thin films, Applied Physics Express 5, 043101/1-3 (2012).
  55. Y. Krockenberger, H. Yamamoto, A. Tsukada, M. Mitsuhashi, and M. Naito: Unconventional transport and superconducting properties in electron-doped cuprates, Physical Review B 85, 184502/1-8 (2012).
  56. K. Hirama, H. Sato, Y. Harada, H. Yamamoto, and M. Kasu: Thermally stable operation of H-terminated diamond FETs by NO2 adsorption and Al2O3 passivation, IEEE Electron Device Letters 33, 1111-1113 (2012).
  57. T. Akasaka, H. Gotoh, Y. Kobayashi, and H. Yamamoto: Extremely narrow violet photoluminescence line from ultrathin InN single quantum well on step-free GaN surface, Advanced Materials 24, 4296-4300 (2012).
  58. T. Makimoto, K. Kumakura, Y. Kobayashi, T. Akasaka, and H. Yamamoto: A vertical InGaN/GaN light-emitting diode fabricated on a flexible substrate by a mechanical transfer method using BN, Applied Physics Express 5, 072102/1-3 (2012).
  59. K. Hirama, H. Sato, Y. Harada, H. Yamamoto, and M. Kasu: Diamond field-effect-transistors with -1.3 A/mm drain current density by Al2O3 passivation layer, Japanese Journal of Applied Physics 51, 090112/1-5 (2012).
  60. Y. Krockenberger, S. Karimoto, H. Yamamoto, and K. Semba: Coherent growth of superconducting TiN thin films by plasma enhanced molecular beam epitaxy, Journal of Applied Physics 112, 083920/1-5 (2012).
  61. H. Yamamoto, Y. Krockenberger, and M. Naito: Multi-source MBE with high-precision rate control system as a synthesis method sui generis for multi-cation metal oxides, Journal of Crystal Growth 378, 184-188 (2013).
  62. Y. Krockenberger, H. Irie, O. Matsumoto, K. Yamagami, M. Mitsuhashi, A. Tsukada, M. Naito, and H. Yamamoto: Emerging superconductivity hidden beneath charge-transfer insulators, Scientific Reports 3, 2235/1-6 (2013).
  63. M. Naito, A. Tsukada, Y. Krockenberger, S. Karimoto, and H. Yamamoto: RE dependence of superconductivity in parent T'-RE2CuO4--implication on the nature of superconductivity, Materials Research Society Symposium Proceedings 1431, 2012.1316/1-7 (2013).
  64. M. Hiroki, N. Watanabe, N. Maeda, H. Yokoyama, K. Kumakura, and H. Yamamoto: Influence of metalorganic vapor phase epitaxy regrowth on characteristics of InAlN/AlGaN/GaN high electron mobility transistors, Japanese Journal of Applied Physics 52, 04CF02/1-7 (2013).
  65. M. Hiroki, Y. Oda, N. Watanabe, N. Maeda, H. Yokoyama, K. Kumakura, and H. Yamamoto: Unintentional Ga incorporation in metalorganic vapor phase epitaxy of In-containing III-nitride semiconductors, Journal of Crystal Growth 382, 36-40 (2013).
  66. CH. Lin, T. Akasaka, and H. Yamamoto: Nucleus and Spiral Growth of N-face GaN(000¯1) obtained by selective-area metalorganic vapor phase epitaxy, Applied Physics Express 6, 035503/1-4 (2013).
  67. T. Akasaka, Y. Kobayashi, M. Kasu, and H. Yamamoto: Carrier gas dependent evaporation energy of GaN estimated from spiral growth rates in selective-area metalorganic vapor phase epitaxy, Applied Physics Express 6, 105501/1-4 (2013).
  68. K. Onomitsu, M. Mitsuhara, H. Yamamoto, and H. Yamaguchi: Ultrahigh-Q micromechanical resonators by using epitaxially induced tensile strain in GaNAs, Applied Physics Express 6, 111201/1-3 (2013).
  69. K. Hirama, Y. Taniyasu, S. Karimoto, Y. Krockenberger, and H. Yamamoto: Single-crystal cubic boron nitride thin films grown by ion-beam-assisted molecular beam epitaxy, Applied Physics Letters 104, 092113/1- 4 (2014).
  70. K. M. Kojima, Y. Krockenberger, I. Yamauchi, M. Miyazaki, M. Hiraishi, M, A. Koda, R. Kadono, R. Kumai, H. Yamamoto, A. Ikeda, and M. Naito: Bulk superconductivity in undoped T'-La1.9Y0.1CuO4 probed by muon spin rotation, Physical Review B 89, 180508R/1-5 (2014).
  71. Y. Krockenberger, H. Irie, J. Yan, L. Waterston, B. Eleazer, K. Sakuma, and H. Yamamoto: Superconductivity in cuprates with square-planar coordinated copper driven by hole carriers, Applied Physics Express 7, 063101/1-4 (2014).
  72. H. Yamamoto, Y. Krockenberger, and M. Naito: Augmented methods for growth and development of novel multi-cation oxides, Proceedings of SPIE 8987, 8987V/1-11 (2014).
  73. R. G. Banal, Y. Taniyasu, and H. Yamamoto: Deep-ultraviolet light emission properties of nonpolar M-plane AlGaN quantum wells, Applied Physics Letters 105, 053104/1-4 (2014).
  74. T. Akasaka and H. Yamamoto: Nucleus and spiral growth mechanisms of nitride semiconductors in metalorganic vapor phase epitaxy, Japanese Journal of Applied Physics 53, 100201/1-9 (2014).
  75. CH Lin, T. Akasaka, and H. Yamamoto: N-face GaN(000¯1) films grown by group-III-source flow-rate modulation epitaxy, Japanese Journal of Applied Physics 53, 11RC01/1-4 (2014).
  76. M. Hiroki, K. Kumakura, Y. Kobayashi, T. Akasaka, T. Makimoto, and H. Yamamoto: Suppression of self-heating effect in AlGaN/GaN high electron mobility transistors by substrate-transfer technology using h-BN, Applied Physics Letters 105, 193509/1-3 (2014).
  77. Y. Krockenberger, B. Eleazer, H. Irie, and H. Yamamoto: Superconducting- and insulating-ground states in La2CuO4 structural isomers, Journal of Physical Society of Japan 83, 114602/1-5 (2014).
  78. M. Naito, K. Uehara, R. Takeda, Y. Taniyasu, and H. Yamamoto: Growth of iron nitride thin films by molecular beam epitaxy, Journal of Crystal Growth 415, 36-40 (2015).
  79. Y. Krockenberger, M. Horio, H. Irie, A. Fujimori, and H. Yamamoto: As-grown superconducting Pr2CuO4 under thermodynamic constraints, Applied Physics Express 8, 053101/1-4 (2015).
  80. T. Makimoto, K. Kumakura, M. Maeda, H. Yamamoto, and Y. Horikoshi: A new AlON buffer layer for RF-MBE growth of AlN on a sapphire substrate, Journal of Crystal Growth 425, 138-140 (2015).
  81. M. Ohtomo, Y. Sekine, SN. Wang, H. Hibino, and H. Yamamoto: Etchant-free graphene transfer using facile intercalation of alkanethiol self-assembled molecules at graphene/metal interfaces, Nanoscale 8, 11503-11510 (2016).
  82. CH. Lin, T. Akasaka, H. Yamamoto: N-face GaN(000¯1) films with hillock-free smooth surfaces grown by group-III-source flow-rate modulation epitaxy, Japanese Journal of Applied Physics 55, 04EJ01/1-4 (2016).
  83. M. Naito, Y. Krockenberger, A. Ikeda, and H. Yamamoto: Reassessment of the electronic state, magnetism, and superconductivity in high-Tc cuprates with the Nd2CuO4 structure, Physica C 523, 28-54 (2016).
  84. K. Sasaki, S. Murakami, and H. Yamamoto: Theory of intraband plasmons in doped carbon nanotubes: Rolled surface-plasmons of graphene, Applied Physics Letters 108, 163109/1-4 (2016).
  85. M. Hiroki, K. Kumakura, and H. Yamamoto: Enhancement of performance of AlGaN/GaN high-electron-mobility transistors by transfer from sapphire to a copper plate, Japanese Journal of Applied Physics 55, 05FH07/1-5 (2016).
  86. S. Suzuki, M. Takamura, H. Yamamoto: Transmission, reflection, and absorption spectroscopy of graphene microribbons in the terahertz region, Japanese Journal of Applied Physics 55, 06GF08/1-4 (2016).
  87. A. Ikeda, Y. Krockenberger, H. Irie, M. Naito, and H. Yamamoto: Direct observation of infinite NiO2 planes in LaNiO2 films, Applied Physics Express 9, 061101/1-3 (2016).
  88. A. Browning, N. Kumada, Y. Sekine, H. Irie, K. Muraki, and H. Yamamoto: Evaluation of disorder introduced by electrolyte gating through transport measurements in graphene, Applied Physics Express 9, 065102/1-3 (2016).
  89. SN. Wang, H. Hibino, S. Suzuki, and H. Yamamoto: Atmospheric pressure chemical vapor deposition growth of millimeter-scale single-crystalline graphene on the copper surface with a native oxide layer, Chemistry of Materials 28, 4893-4900 (2016).
  90. A. Ikeda, H. Irie, H. Yamamoto, and Y. Krockenberger: Incommensurate defect-driven electron correlations in Pr1.85Ce0.15CuO4+δ, Physical Review B 94, 054513/1-5 (2016).
  91. N. P. Breznay, I. M. Hayes, B. J. Ramshaw, R. D. McDonald, Y. Krockenberger, A. Ikeda, H. Irie, H. Yamamoto, and J. G. Analytis: Shubnikov-de Haas quantum oscillations reveal a reconstructed Fermi surface near optimal doping in a thin film of the cuprate superconductor Pr1.86Ce0.14CuO4±δ, Physical Review B 94, 104514/1-5 (2016).
  92. K. Sasaki, S. Murakami, Y. Tokura, H. Yamamoto: Determination of intrinsic lifetime of edge magnetoplasmons, Physical Review B 93, 125402/1-6 (2016).
  93. K. Onomitsu, A. Krajewska, R. A. E. Neufeld, F. Maeda, K. Kumakura, and H. Yamamoto: Epitaxial growth of monolayer MoSe2 on GaAs, Applied Physics Express 9 115501/1-4 (2016).
  94. M. Takamura, H. Hibino, and H. Yamamoto: Applying strain into graphene by SU-8 resist shrinkage, Journal of Physics D: Applied Physics 49, 285303/1-6 (2016).
  95. A. Ikeda, H. Irie, H. Yamamoto, and Y. Krockenberger: Clean superconductivity in electron doped Pr2-xCexCuO4+δ thin films hetero-epitaxially grown on SrTiO3 by reactive molecular beam epitaxy, Journal of Materials Research 31, 3522-3529 (2016).
  96. H. Shibata, K. Fukao, N. Kirigane, S. Karimoto, and H. Yamamoto: SNSPD with ultimate low system dark count rate using various cold filters, IEEE Transactions on Applied Superconductivity 27, 2200104/1-4 (2017).
  97. H. Hirama, Y. Taniyasu, S. Karimoto, H. Yamamoto, and K. Kumakura: Heteroepitaxial growth of single-domain cubic boron nitride films by ion-beam-assisted MBE, Applied Physics Express 10, 035501/1-4 (2017).
  98. M. Hiroki, K. Kumakura, and H. Yamamoto: Efficient heat dissipation in AlGaN/GaN high electron mobility transistors by substrate-transfer technique, Physica Status Solidi A, 1600845/1-4 (2017).
  99. T. Akasaka, CH. Lin, H. Yamamoto, and K. Kumakura: Surface supersaturation in flow-rate modulation epitaxy of GaN, Journal of Crystal Growth 468, 821-826 (2017).
  100. H. Shibata, N. Kirigawa, K. Fukao, D. Sakai, S. Karimoto, and H. Yamamoto: Photoresponse of La1.85Sr0.15CuO4 nanostrip, Superconductor Science and Technology 30, 074001/1-4 (2017).
  101. Y. Nanao, A. Ikeda, M. Naito, H. Yamamoto, K. Kumakura, and Y. Krockenberger: Molecular beam epitaxy of Nd2PdO4 thin films, AIP Advances 7, 075006/1-7 (2017).
  102. M. Ohtomo, Y. Sekine, H. Hibino, and H. Yamamoto: Graphene nanoribbon field-effect transistors fabricated by etchant-free transfer from Au(788), Applied Physics Letters, 112, 021602/1-5 (2018).
  103. M. Naito, H. Sato, A. Tsukada, and H. Yamamoto: Epitaxial effects in thin films of high-Tc cuprates with the K2NiF4 structure, Physica C 546, 84-114 (2018).
  104. M. Horio, Y. Krockenberger, K. Yamamoto, Y. Yokoyama, K. Takubo, Y. Hirata, S. Sakamoto, K. Koshiishi, S. Shin, A. Yasui, E. Ikenaga, H. Yamamoto, H. Wadati, and A. Fujimori: Electronic structure of Ce-doped and undoped Nd2CuO4 superconducting thin films studied by hard X-ray photoemission and soft X-ray absorption spectroscopies, Physical Review Letters, 120, 257001/1-6 (2018).
  105. M. Horio, K. Koshiishi, M. Nakata, K. Hagiwara, M. Kobayashi, K. Horiba, H. Kumigashira, Y. Krockenberger, H. Irie, H. Yamamoto, and A. Fujimori: Angle-resolved photoemission spectroscopy of the low-energy electronic structure of superconducting Pr2CuO4 driven by oxygen nonstoichiometry, Physical Review B, 98, 020505(R)/1-5 (2018).
  106. T. Inaba, T. Tawara, H. Omi, H. Yamamoto, and H. Goto: Epitaxial growth and optical properties of Er-doped CeO2 layers on Si (111), Optical Materials Express, 8, 2843-2849 (2018).
  107. Y. Nanao, A. Ikeda, M. Naito, H. Yamamoto, Y. Taniyasu, and Y. Krockenberger: Crystal growth and metal-insulator transition in two-dimensional layered rare-earth palladates, Phys. Rev. Mat., 2, 085003/1-12 (2018).
  108. Y. Krockenebrger, A. Ikeda, K. Kumakura, and H. Yamamoto: Infinite-layer phase formation in the Ca1-xSrxCuO2 system by reactive molecular beam epitaxy, Journal of Applied Physics 124, 073905/1-30 (2018).
  109. Y. K. Wakabayashi, T. Otsuka, Y. Taniyasu, H. Yamamoto, and H. Sawada: Improved adaptive sampling method utilizing Gaussian process regression for prediction of spectral peak structure, Applied Physics Express 11, 112401/1-4 (2018).
  110. M. Kang, J. Pelliciari, Y. Krockenberger, J. Li, D. E. McNally, E. Paris, R. Liang, W. N. Hardy, D. A. Bonn, H. Yamamoto, T. Schmitt, and R. Comin: Resolving the nature of electronic excitations in resonant inelastic x-ray scattering, Physical Review B, 99, 045105/1-12 (2019).
  111. M. Kang, J. Pelliciari, A. Frano, N. Brenznay, E. Schierle, E. Weschke, R. Sutarto, F. He, P. Shafer, E. Arenholz, M. Chen, K. Zang, A. Ruiz, Z. Hao, S. Lewin, J. Analytis, Y. Krockenebrger, H. Yamamoto, T. Das, and R. Comin: Evolution of charge order topology across a magnetic phase transition in cuprate superconductors, Nature Physics 15, 335-340 (2019).
  112. Y. K. Wakabayashi, Y. Krockenberger, N. Tsujimoto, T. Boykin, S. Tsuneyuki, Y. Taniyasu, and H. Yamamoto: Ferromagnetism above 1000 K in highly cation-ordered double-perovskite insulator Sr3OsO6, Nature Communications, 10, 532/1-8 (2019).
  113. K. Hirama, Y. Taniyasu, H. Yamamoto, and K. Kumakura: Structural analysis of cubic boron nitride (111) films heteroepitaxially grown on diamond (111) substrates, Journal of Applied Physics 125, 115303/1-5 (2019).
  114. A. Ikeda, Y. Krockenberger, and H. Yamamoto: Molecular beam epitaxy of electron doped infinite-layer Ca1-xRxCuO2 thin films, Physical Review Materials, 3, 064803/1-10 (2019).
  115. H. Yamamoto: Comments on superconductivity in AE2CuO4±δ (AE = Sr, Ba), Proceedings of National Academy of Science of the United States of America, 116, 18165 (2019).
  116. Y. K. Wakabayashi, T. Otsuka, Y. Krockenberger, H. Sawada, Y. Taniyasu, and H. Yamamoto: Machine-learning-assisted thin-film growth: Bayesian optimization in molecular beam epitaxy of SrRuO3 thin films, Applied Physics Letters Materials, 7, 101114/1-7 (2019).
  117. N. P. Breznay, I. M. Hayes, N. L. Nair, T. Helm, J. G. Analytis, R. D. McDonald, Z-W. Zhu, Y. Krockenberger, H. Irie, H. Yamamoto, K. A. Modic, A. Frano, P. Shafer, and E. Arenholz: Interplay of structure and charge order revealed by quantum oscillations in thin films of Pr2CuO4±δ, Physical Review B 100, 235111/1-8 (2019).
  118. K. Hirama, Y. Taniyasu, H. Yamamoto, and K. Kumakura: Control of n-type electrical conductivity for cubic boron nitride (c-BN) epitaxial layers by Si doping, Applied Physics Letters 116, 162104/1-5 (2020).
  119. K. Takiguchi, Y. K. Wakabayashi, H. Irie, Y. Krockenberger, T. Otsuka, H. Sawada, S. A. Nikolaev, H. Das, M. Tanaka, Y. Taniyasu, and H. Yamamoto: Quantum transport evidence of Weyl fermions in an epitaxial ferromagnetic oxide, Nature Communications, 11, 4969/1-12 (2020).
  120. S. Kaneta-Takada, Y. K. Wakabayashi, Y. Krockenberger, S. Ohya, M. Tanaka, Y. Taniyasu, and H. Yamamoto: Thickness-dependent quantum transport of Weyl fermions in ultra-high-quality SrRuO3 films, Applied Physics Letters, 118, 092408/1-6 (2021).
  121. Y. K. Wakabayashi, S. Kaneta-Takada, Y. Krockenberger, K. Takiguchi, S. Ohya, M. Tanaka, Y. Taniyasu, and H. Yamamoto: Structural and transport properties of highly Ru-deficient SrRu0.7O3 thin films prepared by molecular beam epitaxy: Comparison with stoichiometric SrRuO3, AIP Advances, 11, 035226/1-7 (2021).
  122. Y. K. Wakabayashi, S. Kaneta-Takada, Y. Krockenberger, Y. Taniyasu, and H. Yamamoto: Wide-range epitaxial strain control of electrical and magnetic properties in high-quality SrRuO3 films, ACS Applied Electronic Materials, 3, 2712-2719 (2021).
  123. Y. Krockenberger, A. Ikeda, and H. Yamamoto: Atomic Stripe Formation in Infinite-Layer Cuprates, ACS Omega, 6, 21884-21891 (2021).
  124. Y. K. Wakabayashi, M. Kobayashi, Y. Takeda, K. Takiguchi, H. Irie, S. Fujimori, T. Takeda, R. Okano, Y. Krockenberger, Y. Taniyasu, and H. Yamamoto: Single-domain perpendicular magnetization induced by the coherent O 2p-Ru 4d hybridized state in an ultra-high-quality SrRuO3 film, Physical Review Materials, 5, 124403/1-9 (2021).
  125. Y. Krockenberger, A. Ikeda, H. Yamamoto, and H. Omi: Molecular beam epitaxy of Sr5Au2O8 thin films, Physical Review Materials, 6, 013401/1-7 (2022).
  126. A. Ikeda, Y. Krockenberger, Y. Taniyasu, and H. Yamamoto: Designing superlattices of cuprates and ferrites for superconductivity, ACS Applied Electronic Materials, 4, 2672-2681 (2022).
  127. H. Yamamoto, Y. Krockenberger, Y. Taniyasu, and Y. K. Wakabayashi: Electron-beam-evaporation-based multi-source oxide MBE as a synthesis method for high-quality and novel magnetic materials-beyond 3d transition metal compounds, Journal of Crystal Growth, 593, 126778/1-6 (2022).
  128. Y. K. Wakabayashi, M. Kobayashi, Y. Takeda, M. Kitamura, T. Takeda, R. Okano, Y. Krockenberger, Y. Taniyasu, and H. Yamamoto: Isotropic orbital magnetic moments in magnetically anisotropic SrRuO3 films, Physical Review Materials, 6, 094402/1-7 (2022).
  129. Y. K. Wakabayashi, T. Otsuka, Y. Krockenberger, H. Sawada, Y. Taniyasu, and H. Yamamoto: Bayesian optimization with experimental failure for high-throughput materials growth, npj Computational Materials, 8, 180/1-9 (2022).
  130. S. Kaneta-Takada, Y. K. Wakabayashi, Y. Krockenberger, T. Nomura, Y. Kohama, S. A. Nikolaev, H. Das, H. Irie, K. Takiguchi, S. Ohya, M. Tanaka, Y. Taniyasu, and H. Yamamoto: High-mobility two-dimensional carriers from surface Fermi arcs in magnetic Weyl semimetal films, npj Quantum Materials, 7, 102/1-12 (2022).
  131. Y. K. Wakabayashi, Y. Krockenberger, T. Otsuka, H. Sawada, Y. Taniyasu, and H. Yamamoto: Intrinsic physics in magnetic Weyl semimetal SrRuO3 films addressed by machine-learning-assisted molecular beam epitaxy, Japanese Journal of Applied Physics, 62, SA0801/1-15 (2023).
  132. Y. K. Wakabayashi, T. Otsuka, Y. Krockenberger, H. Sawada, Y. Taniyasu, and H. Yamamoto: Stoichiometric growth of SrTiO3 films via Bayesian optimization with adaptive prior mean, APL Machine Learning, 1, 026104 (2023).
  133. S. K.-Takada, Y. K. Wakabayashi, Y. Krockenberger, H. Irie, S. Ohya, M. Tanaka, Y. Taniyasu, and H. Yamamoto: Scattering-dependent transport of SrRuO3 films: FromWeyl fermion transport to hump-like Hall effect anomaly, Physical Review Materials, 7, 054406 (2023).
  134. L. Martinelli, K. Wohlfeld, J. Pelliciari, R. Arpaia, N. B. Brookes, D. Di Castro, M. G. Fernandez, M. Kang, Y. Krockenberger, K. Kummer, D. E. McNally, E. Paris, T. Schmitt, H. Yamamoto, A. Walters, K.-J. Zhou, L. Braicovich, R. Comin, M. M. Sala, T. P. Devereaux, M. Daghofer, and G. Ghiringhelli: Collective Nature of Orbital Excitations in Layered Cuprates in the Absence of Apical Oxygens, Physical Review Letters, 132, 066004/1-8 (2024).
  135. A. Ikeda, Y. Krockenberger, Y. Taniyasu, and H. Yamamoto: On the criteria for superconducting superlattices using CaCuO2, Superconductor Science and Technology, 37, 055002/1-8 (2024).
  136. Y. K. Wakabayashi, M. Kobayashi, Y. Seki, Y. Kotani, T. Ohkochi, K. Yamagami, M. Kitamura, Y. Taniyasu, Y. Krockenberger, and H. Yamamoto: Magnetic anisotropy driven by ligand in 4d transition-metal oxide SrRuO3, APL Material 12, 041119/1-9 (2024).
  137. K. Takiguchi, Y. Krockenberger, Y. Taniyasu, and H. Yamamoto: Berezinskii-Kosterlitz-Thouless transition in rhenium nitride films, Physical Review B 110, 024516/1-8 (2024).
  138. Y. K. Wakabayashi, M. Kobayashi, Y. Seki, K. Yamagami, T. Takeda, T. Ohkochi, Y. Taniyasu, Y. Krockenberger, and H. Yamamoto: SrRuO3 under tensile strain: Thickness-dependent electronic and magnetic properties, Journal of Applied Physics 136, 043907/1-8 (2024).
  139. T. Inaba, X. Xu, H. Omi, H. Yamamoto, T. Tawara and H. Sanada: Improving crystal quality of Er-doped Gd2O3 grown on a Si(111) substrate by inserting a bifunctional GdOx layer, CrystEngComm 26, 4190-4194 (2024).
  140. Y. K. Wakabayashi, Y. Krockenberger, K. Takiguchi, H. Yamamoto, and Y. Taniyasu: Role of ion milling angle in determining conducting and insulating states on SrTiO3 surfaces, Journal of Applied Physics 137, 095305/1-6 (2025).
  141. H. Horiuchi, Y. Araki, Y. K. Wakabayashi, J. Ieda, M. Yamanouchi, Y. Sato, S. Kaneta-Takada, Y. Taniyasu, H. Yamamoto, Y. Krockenberger, M. Tanaka, and S. Ohya: Single-layer spin-orbit-torquemagnetization switching due to spin berry curvature generated by minute spontaneous atomic displacement in a Weyl oxide, Advanced Materials 2025, 2416091/1-9 (2025).
  142. Y. K. Wakabayashi, M. Kobayashi, Y. Krockenberger, T. Takeda, K. Yamagami, H. Yamamoto, and Y. Taniyasu: Single monolayer ferromagnetic perovskite SrRuO3 with high conductivity and strong ferromagnetism, Applied Physics Letters 127, 022402/1-5 (2025).
  143. Y. Seki, Y. K. Wakabayashi, T. Takeda, K. Inagaki, S. Fujimori, Y. Takeda, A. Fujimori, Y. Taniyasu, H. Yamamoto, Y. Krockenberger, M. Tanaka, and M. Kobayashi: Correlated Ligand Electrons in the Transition-Metal Oxide SrRuO3, Physical Review Letters 135, 046402/1-7 (2025).
  144. K. Onomitsu, H. Hibino, H. Yamamoto, and K. Kumakura: Vicinal GaAs(111)B substrates suppress rotational domains in InSe van der Waals epitaxy, Japanese Journal of Applied Physics 64, 065506/1-5 (2025).
  145. Y. Krockenberger, J. Ruiters, H. Irie, Y. Taniyasu, and H. Yamamoto: Polymorphism and superconductivity in RuO2, Journal of Physical Chemistry C 129, 18157-18163 (2025).
  146. K. Takiguchi, Y. Krockenberger, T. Ichibha, K. Hongo, R. Maezono, Y. Taniyasu, H. Yamamoto:Electronic transport properties of titanium nitride grown by molecular beam epitaxy, Physical Review B 112, 224520/1-8 (2025).

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