Ibaraki University's
Graduate School of Science and Engineering (Science)
Department of Science (Physics Course)

Associate Professor



  1. 日本学術振興会特別研究員(DC1) 2000/04-2003/03
  2. 茨城大学理学部自然機能科学科助手 2003/04-2005/03
  3. 茨城大学理学部助教授 2005/04-Present

Academic background

  1. Hokkaido University Faculty of Science Physics 1998 Graduated
  2. Hokkaido University Graduate School, Division of Natural Science Physiscs Doctor course 2003 Completed

Academic degrees

  1. Doctor(Science) Hokkaido University
  2. Master(Science) Hokkaido University

Research Areas

  1. 低温磁性、強相関電子系の物性

Subject of research

  1. Physics on strongly correlated electron system 1998-Present


  1. Research paper (scientific journal) Joint Observation of a new field-induced phase transition and its concomitant quantum critical fluctuations in CeCo(In1-xZnx)5 M. Yokoyama, H. Mashiko, R. Otaka, Y. Oshima, K. Suzuki, K. Tenya, Y. Shimizu, A. Nakamura, D. Aoki, A. Kondo, K. Kindo, S. Nakamura, and T. Sakakibara Phys. Rev. B 95, 224425-1-224425-5 2017
  2. Research paper (scientific journal) Correlation effect in Sr1-xLaxRuO3 studied by soft x-ray photoemission spectroscopy I. Kawasaki, Y. Sakon, S.-i. Fujimori, H. Yamagami, K. Tenya, and M. Yokoyama Phys. Rev. B 94, 174427-1-174427-7 2016
  3. Research paper (scientific journal) Joint Enhancement of ferromagnetism by oxygen isotope substitution in strontium ruthenate SrRuO3 H. Kawanaka, Y. Aiura, T. Hasebe, M. Yokoyama, T. Masui, Y. Nishihara, and T. Yanagisawa Scientific Reports 6, 35150-1-35150-6 2016
  4. Research paper (scientific journal) Joint Superconductivity and Non-Fermi-Liquid Behavior in the Heavy-Fermion Compound CeCo1-xNixIn5 R. Otaka, M. Yokoyama, H. Mashiko, T. Hasegawa, Y. Shimizu, Y. Ikeda, K. Tenya, S. Nakamura, D. Ueta, H. Yoshizawa, and T. Sakakibara J. Phys. Soc. Jpn. 85, 094713-1-094713-7 2016
  5. Research paper (scientific journal) Joint Muon Spin Relaxation and Neutron Diffraction Studies of Cluster-Glass States in Sr1-xLaxRuO3 I. Kawasaki, K. Fujimura, I. Watanabe, M. Avdeev, K. Tenya and M. Yokoyama J. Phys. Soc. Jpn. 85, 054701-1-054701-8 2016

Research presentations

  1. Oral presentation(general) CeCo(In1-xZnx)5の低温高磁場相 日本物理学会 第72回年次大会 2017
  2. Poster presentation CeCoIn5のZn置換系における磁場中輸送特性 日本物理学会 第72回年次大会 2017
  3. Poster presentation CeCo1-xNixIn5における非フェルミ液体異常 日本物理学会 第72回年次大会 2017
  4. Oral presentation(general) 遍歴強磁性体SrRuO3における強磁性転移の酸素同位体効果 日本物理学会 第72回年次大会 2017
  5. Oral presentation(invited, special) 重い電子系CeCoIn5 の超伝導および非フェルミ液体異常に対するZn 置換効果 第二回強相関電子系研究会 2016

Memberships of academic societies

  1. The Japanese Society for Neutron Science
  2. The Physical Society of Japan
  3. International Society for μSR Spectroscopy