Satoshi Fujimoto
Professor, Department of Materials Engineering Science, Osaka University- Topics of Research：
- Topological phases and Majorana fermions in non-centrosymmetric electron systems
■ Laboratory Website
■ Description of Research
[961KB]
RESEARCH
My main research interest is the theoretical study on topological phases realized in condensed matter systems such as superconductors, superfluids, band insulators, and Mott insulators. In particular, recently, the exploration of Majorana fermions in topological superconductors of noncentrosymmetric materials is one of the main research theme. Majorana fermions in topological superconductors play an important role for the realization of non-Abelian statistics and topological quantum computation. One of promising systems for this purpose is a superconductor with strong spin-orbit interaction under applied magnetic fields, as we proposed before [Phys. Rev. Lett. 103, 020401]. An important question is what a smoking gun experiment for the detection of Majorana fermions. This is still an open issue which should be addressed by theoretician.
We are also investigating novel electromagnetic and thermal responses in topological insulators and superconductors, which are related to Axion field theory. In particular, a current interesting issue is the elucidation of dynamical properties associated with dynamical Axion in topological superconductors, and fluctuation effects of topological Berry phase.
EDUCATION
- 1988
- B.Sc. in Physics, Kyoto University
- 1990
- M.S. in Physics, Kyoto University
- 1993
- Ph.D. in Physics, Kyoto University (Advisor: Kosaku Yamada)
PROFESSIONAL EXPERIENCE
- 1993-1994
- Postdoc fellow, Yukawa Institute of Theoretical Physics, Kyoto University
- 1994-2007
- Research Associate, Department of Physics, Kyoto University
- 1997-1998
- Visiting researcher, Rudolf Peierls Center for Theoretical Physics, University of Oxford
- 2007
- Associate Professor, Department of Physics, Kyoto University
- 2014-present
- Professor, Department of Materials Engineering Science, Osaka University
HONORS AND AWARDS
- 2013
- Superconductivity Science and Technology Award (Co-awarded with M. Sato)
SELECTION OF PUBLICATIONS
"Electromagnetic and Thermal Responses of Z Topological Insulators and Superconductors in Odd Spatial Dimensions",
K. Shiozaki, S. Fujimoto,
Phys. Rev. Lett. 110, 076804 (2013).
"Quantum Thermal Hall Effect in a Time-Reversal-Symmetry-Broken Topological Superconductor in Two Dimensions : Approach From Bulk Calculations",
H. Sumiyoshi, S. Fujimoto,
J. Phys. Soc. Jpn. 82, 023602 (2013).
"Index theorem for topological heterostructure systems",
K. Shiozaki, T. Fukui, S. Fujimoto,
Phys. Rev. B 86, 125405 (2012).
"A study on correlation effects in two dimensional topological insulators",
Y. Tada, R. Peters, N. Kawakami, S. Fujimoto,
Phys. Rev. B 85, 165138 (2012).
"Green's function method for line defects and gapless modes in topological insulators: Beyond the semiclassical approach",
K. Shiozaki, S. Fujimoto,
Phys. Rev. B 85, 085409 (2012).
"Existence of Majorana Fermions and Topological Order in Nodal Superconductors",
M. Sato, S. Fujimoto,
Phys. Rev. Lett. 105, 217001 (2010).
"Non-Abelian topological orders and Majorana fermions in spin-singlet superconductorctors",
M. Sato, Y. Takahashi, S. Fujimoto,
Phys. Rev. B 82, 134521 (2010).
"Non-Abelian Topological Order in s-Wave Superfluids of Ultracold Fermionic Atoms",
M. Sato, Y. Takahashi, S. Fujimoto,
Phys. Rev. Lett. 103, 020401 (2009).
"Topological Phases of Noncentrosymmetric Superconductors: Edge States, Majorana Fermions, and the Non-Abelian Statistics",
M. Sato, S. Fujimoto,
Phys. Rev. B 79, 094504 (2009).
