Associate Professor, Department of Physics, the University of Tokyo
- Edge states and low-energy excitations in strongly correlated topological phases
E-mail : katsura[at]phys.s.u-tokyo.ac.jp
My research interests focus on strongly correlated and topological systems. In particular, I have theoretically proposed a microscopic mechanism of spin-driven ferroelectricity, the thermal Hall effect in insulating magnets, and nearly flat bands with nontrivial topology. I am also interested in mathematical aspects of quantum many-body systems, including Hubbard-type models and quantum spin chains.
One of the characteristics of non-interacting topological phases is the appearance of edge states at their boundaries. In this project, I would like to extend the notion of these edge states to interacting topological systems. More precisely, I will study a many-body analogue of edge states in strongly correlated Majorana-fermion systems. I will also investigate supersymmetry breaking and the associated exotic particles in fermionic lattice models.
- B.Sc. in Physics, University of Tokyo
- Ph.D. in Applied Physics, University of Tokyo
- Postdoc (Special postdoctoral researchers program of RIKEN)
- JSPS postdoctoral fellowship for research abroad (KITP, UCSB)
- Lecturer, Department of Physics, Gakushuin University
- Associate Professor, Department of Physics, Gakushuin University
- Associate Professor, Department of Physics, the University of Tokyo
HONORS AND AWARDS
- Condensed Matter Physics Prize
- The 9th Young Scientist Award of the Physical Society of Japan
- Nevill F. Mott Prize (SCES 2016)
SELECTION OF PUBLICATIONS
"Supersymmetry breaking and Nambu-Goldstone fermions in an extended Nicolai model"
Noriaki Sannomiya, Hosho Katsura, Yu Nakayama
Physical Review D, 94, 045014-1-13 (Aug. 2016).
"The Z2 Index of Disordered Topological Insulators with Time Reversal Symmetry"
Hosho Katsura, Tohru Koma
Journal of Mathematical Physics 57, 021903-1-13 (Feb. 2016).
"Exact ground states and topological order in interacting Kitaev/Majorana chains"
Hosho Katsura, Dirk Schuricht, Masahiro Takahashi
Physical Review B, 92, 115137-1-12 (Sep. 2015).
"Ground States of the Spin-1 Bose-Hubbard Model"
Hosho Katsura, Hal Tasaki
Physical Review Letters 110, 130405-1-5 (Mar. 2013).
"General Relationship Between the Entanglement Spectrum and the Edge State Spectrum of Topological Quantum States"
Xiao-Liang Qi, Hosho Katsura, Andreas W. W. Ludwig
Physical Review Letters 108, 196402-1-5 (May 2012).
"Nearly-flat bands with nontrivial topology"
Kai Sun, Zhengcheng Gu, Hosho Katsura, Sankar Das Sarma
Physical Review Letters 106, 236803-1-4 (Jun. 2011).
"Observation of the Magnon Hall Effect"
Y. Onose, T. Ideue, H. Katsura, Y. Shiomi, N. Nagaosa, Y. Tokura
Science 329, 297-299 (Jul. 2010).
"Theory of the Thermal Hall Effect in Quantum Magnets"
Hosho Katsura, Naoto Nagaosa, Patrick A. Lee
Physical Review Letters 104, 066403-1-4 (Feb. 2010).
"Quantum Spin Hall Effect in a Transition Metal Oxide Na2IrO3"
Atsuo Shitade, Hosho Katsura, Jan Kunes, Xiao-Liang Qi, Shou-Cheng Zhang, Naoto Nagaosa
Physical Review Letters 102, 256403-1-4 (Jun. 2009).
"Spin Current and Magnetoelectric Effect in Noncollinear Magnets"
Hosho Katsura, Naoto Nagaosa, Alexander V. Balatsky
Physical Review Letters 95, 057205-1-4 (Jul. 2005).