Kazuhiro KUBOKI

Kazuhiro KUBOKI

D. Sc., Univ. of Tokyo, 1990
Associate Professor

Research group: Theoretical Physics Group(condensed matter theory)
Phone: +81-78-803-5630
E-mail: kubokikobe-u.ac.jp

Research Description

My main research interests lie in the study of strongly correlated electron systems. Examples include cuprate superconductors whose high Tc and various novel properties are considered to be due to electron correlation effects. I am attacking this problem using field theoretical methods and numerical works. I am also studying the proximity effect between superconductors and magnets. The interface states in these systems are quite interesting, because coexistence of superconductivity and magnetism may change the transport properties significantly.

Main Publications

• K. Kuboki and M. Sigrist, "Proximity-Induced Time-Reversal Symmetry Breaking at Josephson Junctions between Unconventional Superconductors", J. Phys. Soc. Jpn. 65, 361-364 (1996).
• K. Kuboki, "Proximity effects near the interface between d-wave superconductors and ferro/antiferromagnets", J. Phys. Soc. Jpn. 68, 3150-3153 (1999).
• K. Kuboki, "Effect of Band Structure on the Symmetry of Superconducting States", J. Phys. Soc. Jpn. 70, 2698-2702 (2001).
• K. Kuboki and H. Takahashi, "Spontaneous spin current near the interface between unconventional superconductors and ferromagnets", Phys. Rev. B70, 214524_1-8 (2004).
• M. Yoneya, K. Kuboki and M. Hayashi, "Domain-wall structure of a classical Heisenberg ferromagnet on a Moebius strip ", Phys. Rev. B78, 064419_1-6 (2008)
• K. Kuboki T. Yano "Microscopic Derivation of Ginzburg-Landau Equations for Coexistent State of SUperconductivity and magnetism", J. Phys. Soc. Jpn. 81, 064711_1-8 (2012).
• K. Kuboki and H. Yamase, " Static spin susceptibility in magnetically ordered states", Phys, Rev. B96, 064411_1-8 (2017).