Hiroyuki Hayashi (Assistant Professor)

Kyoto University

hayashiatcms.mtl.kyoto-u.ac.jp

Publications

  1. A. Seko, A. Togo, H. Hayashi, K. Tsuda, L. Chaput, and I. Tanaka, “Discovery of low thermal conductivity compounds with first-principles anharmonic lattice dynamics calculations and Bayesian optimization”, Phys. Rev. Lett. 115, 205901 (2015).
  2. H. Hayashi, S. Katayama, R. Huang, K. Kurushima, and I. Tanaka “Selective Fabrication of n- and p-type SnO Films without Doping” Phys. Status Solidi RRL 9 192 – 196 (2015).
  3. S. Katayama, Y. Ogawa, H. Hayashi, F. Oba, I. Tanaka “Epitaxial growth of tin(II) niobate with a pyrochlore structur” J. Cryst. Growth 416 126 – 129 (2015).
  4. R. Ishikawa, A. Lupini, F. Oba, S. Findlay, N. Shibata, T. Taniguchi, K. Watanabe, H. Hayashi, T. Sakai, I. Tanaka, Y. Ikuhara, and S. Pennycook “Atomic Structure of Luminescent Centers in High-Efficiency Ce-doped w-AlN Single Crystal” Sci. Rep. 4, 3778-1– 3778-5 (2014).
  5. S. Katayama, Y. Ogawa, H. Hayashi, F. Oba, and I. Tanaka “Fabrication and Characterization of Sn2M2O7 (M=Nb, Ta) Thin Films” AMTC letters 4, 174 – 175 (2014).
  6. H. Hayashi, S. Katayama, R. Huang, F. Oba, and I. Tanaka “Structure and Electron Transport of Undoped n-SnO Films” AMTC letters 4, 190 – 191 (2014).
  7. T. Yokoyama, F. Oba, A. Seko, H. Hayashi, Y. Nose, and Isao Tanaka “Theoretical Photovoltaic Conversion Efficiencies of ZnSnP2, CdSnP2, and Zn1-xCdxSnP2 Alloys” Appl. Phys. Express 6, 061201-1 – 061201-3 (2013).
  8. H. Hayashi, R. Huang, F. Oba, T. Hirayama, and I. Tanaka “Site preference of cation vacancies in Mn-doped Ga2O3 with defective spinel structure” Appl. Phys. Lett. 101, 241906-1 – 241906-3 (2012).
  9. H. Akamatsu, K. Fujita, H. Hayashi, T. Kawamoto, Y. Kumagai, Y. Zong, K. Iwata, F. Oba, I. Tanaka, and K. Tanaka “Crystal and Electronic Structure and Magnetic Properties of Divalent Europium Perovskite Oxides EuMO3 (M = Ti, Zr, and Hf): Experimental and First-Principles Approaches” Inorg. Chem. 51, 4560 – 4567 (2012).
  10. H. Hayashi, R. Huang, F. Oba, T. Hirayama, and I. Tanaka First-principles Study of Electronic Structure in Mn-doped g-Ga2O3AMTC Letters 3, 118 – 119 (2012).
  11. S. Katayama, H. Hayashi, F. Oba, and I. Tanaka “Epitaxial Growth and Characterization of Rocksalt ZnO Thin Films with Low-Level NiO Alloying” Jpn. J. Appl. Phys., 50, 075503-1 – 075503-5 (2011).
  12. H. Hayashi, R. Huang, F. Oba, T. Hirayama, and I. Tanaka “Atomistic structure and energetics of interface between Mn-doped g-Ga2O3 and MgAl2O4J. Mater. Sci., 46, 4169 – 4175 (2011).
  13. H. Hayashi, R. Huang, F. Oba, T. Hirayama, and I. Tanaka Epitaxial growth of Mn-doped g-Ga2O3 on spinel substrate” J. Mater. Res. 26, 578 – 583 (2011).
  14. H. Hayashi, R. Huang, X. Wang, F. Oba, T. Hirayama, and I. Tanaka Synthesis of Mn-doped Ga2O3 Epitaxial Thin Film with Spinel Structure” AMTC Letters 2, 234 – 235 (2010).
  15. H. Hayashi, R. Huang, H. Ikeno, S. Sonoda, F. Oba, and I. Tanaka “Characterization of Ga2O3:Mn thin films with room temperature ferromagnetism” AMTC Letters 1, 276 – 277 (2008).
  16. S. Yoshioka, H. Hayashi, A. Kuwabara, F. Oba, K. Matsunaga, and I. Tanaka “Structures and energetics of Ga2O3 polymorphs” J. Phys.: Condens. Matter 19, 346211-1 – 346211-11 (2007).
  17. R. Huang, H. Hayashi, F. Oba, and I. Tanaka, “Microstructure of Mn-doped g-Ga2O3 epitaxial film on sapphire (0001) with room temperature ferromagnetism” J. Appl. Phys. 101, 063526-1 – 063526-6 (2007).
  18. S. Sonoda, I. Tanaka, F. Oba, H. Ikeno, H. Hayashi, T. Yamamoto, Y. Yuba, Y. Akasaka, K. Yoshida, M. Aoki, M. Asari, T. Araki, Y. Nanishi, K. Kindo, and H. Hori “Awaking of ferromagnetism in GaMnN through control of Mn valence” Appl. Phys. Lett. 90, 012504-1 – 012504-3 (2007).
  19. H. Hayashi, R. Huang, H. Ikeno, F. Oba, S. Yoshioka, I. Tanaka, and S. Sonoda “Room temperature ferromagnetism in Mn-doped g-Ga2O3 with spinel structure” Appl. Phys. Lett. 89, 181903-1 – 181903-3 (2006).

Invited speech

  1. H. Hayashi
    “Atomic and electronic structure of Mn-doped Ga2O3 thin films and interfaces with MgAl2O4 substrates” Invited speech, Collaborative Conference on Crystal Growth, June 10-13, 2013, Cancun, Mexico

Award

  1. “Award for Encouragement of Research in Thin Film”
    The 15th International Conference on Thin Film (ICTF-15), 2011, Kyoto.