Takasada SHIBAUCHI
Professor, Department of Advanced Materials Science, University of Tokyo- Topics of Research：
- Physical properties of heavy-fermion superconductors with artificially controlled inversion symmetry breaking
■ Laboratory Website>
■ Description of Research
[1088KB]
RESEARCH
My research interest includes unconventional superconductivity in strongly correlated electron systems, anomalous properties associated with quantum phase transition, and quantum spin liquid state in frustrated antiferromagnets. Materials we focus recently are the iron-based superconductors, heavy fermion compounds, and layered organic materials. We investigate low-energy excitations from the ground state by using several measurement techniques at low temperatures; transport properties including thermal conductivity and high-field magnetotransport, magnetic penetration depth in the Meissenr state of superconductors, microwave surface impedance and cyclotron resonance, and magnetic torque as a sensitive probe of symmetry breaking associated with second-order phase transitions.
One of my main projects is to fabricate epitaxial superlattices of Ce-based heavy-fermion materials. We recently succeeded in fabricating such heavy-fermion superlattices by molecular beam epitaxy for the first time. In particular we observed superconductivity in two-dimensional Ce layers whose electron masses are quite heavy.
In this project, we will make several different superlattice structures with modulated number of layers of Ce and block layers. This way we can control artificially the degree of inversion symmetry breaking. By using low-temperature measurements of physical properties including angular dependence of upper critical field, from which we can evaluate the Pauli paramagnetic effect of pair breaking.
EDUCATION
- 1990
- B.Eng. in Applied Physics, The University of Tokyo (Advisor: Kunimitsu Uchinokura)
- 1992
- M. Eng. in Applied Physics, The University of Tokyo
- 1999
- Ph.D. (Eng.) in Applied Physics, The University of Tokyo (Advisor: Kunimitsu Uchinokura)
PROFESSIONAL EXPERIENCE
- 1993-2001
- Research Associate, Department of Applied Physics, The University of Tokyo
- 1999-2000
- Postdoctoral Fellow, Los Alamos National Laboratory
- 1999-2001
- Visiting Scientist, IBM T. J. Watson Research Center
- 2001-2001
- J. Robert Oppenheimer Fellow, Los Alamos National Laboratory
- 2001-2005
- Associate Professor, Department of Electronic Science and Engineering, Kyoto University
- 2005
- Associate Professor, Department of Physics, Kyoto University
- 2014-Present
- Professor, Department of Advanced Materials Science, University of Tokyo
SELECTION OF PUBLICATIONS
"Anomalous Superfluid Density in Quantum Critical Superconductors",
K. Hashimoto, Y. Mizukami, R. Katsumata, H. Shishido, M. Yamashita, H. Ikeda, Y. Matsuda, J. A. Schlueter, J. D. Fletcher, A. Carrington, D. Gnida, D. Kaczorowski, and T. Shibauchi,
Proc. Natl. Acad. Sci. USA 110, 3293-3297 (2013).
"Anomalous Upper Critical Field in CeCoIn5/YbCoIn5 Superlattices with Rashba-Type Heavy Fermion Interface",
S. K. Goh, Y. Mizukami, H. Shishido, D. Watanabe, S. Yasumoto, M. Shimozawa, M. Yamashita, T. Terashima, Y. Yanase, T. Shibauchi, A. I. Buzdin, and Y. Matsuda,
Phys. Rev. Lett. 109, 157006 (2012).
"Cyclotron Resonance in the Hidden-Order Phase of URu2Si2",
S. Tonegawa, K. Hashimoto, K. Ikada, Y. H. Lin, H. Shishido, Y. Haga, T. D. Matsuda, E. Yamamoto, Y. Onuki, H. Ikeda, Y. Matsuda, and T. Shibauchi,
Phys. Rev. Lett. 109, 036401 (2012).
"A Sharp Peak of the Zero-Temperature Penetration Depth at Optimal Composition in the Iron-Based Superconductor BaFe2(As1-xPx)2",
K. Hashimoto, K. Cho, T. Shibauchi, S. Kasahara, Y. Mizukami, R. Katsumata, Y. Tsuruhara, T. Terashima, H. Ikeda, M. A. Tanatar, H. Kitano, N. Salovich, R. W. Giannetta, P. Walmsley, A. Carrington, R. Prozorov, and Y. Matsuda,
Science 336, 1554-1557 (2012).
"Electronic Nematicity above the Structural and Superconducting Transition in BaFe2(As1-xPx)2",
S. Kasahara, H. J. Shi, K. Hashimoto, S. Tonegawa, Y. Mizukami, T. Shibauchi, K. Sugimoto, T. Fukuda, T. Terashima, A. H. Nevidomskyy, and Y. Matsuda,
Nature 486, 382-385 (2012).
"Extremely Strong-Coupling Superconductivity in Artificial Two-Dimensional Kondo Lattices",
Y. Mizukami, H. Shishido, T. Shibauchi, M. Shimozawa, T. Yasumoto, M. Yamashita, H. Ikeda, T. Terashima, H. Kontani, and Y. Matsuda,
Nature Phys. 7, 849-853 (2011).
"Rotational Symmetry Breaking in the Hidden-Order Phase of URu2Si2",
R. Okazaki, T. Shibauchi, H. J. Shi, Y. Haga, T. D. Matsuda, E. Yamamoto, Y. Onuki, H. Ikeda, and Y. Matsuda,
Science 331, 439-442 (2011).
"Highly Mobile Gapless Excitations in a Two-Dimensional Canditate Quantum Spin Liquid",
M. Yamashita, N. Nakata, Y. Senshu, M. Nagata, H. M. Yamamoto, R. Kato, T. Shibauchi, and Y. Matsuda,
Science 328, 1246-1248 (2010).
"Tuning the Dimensionality of the Heavy Fermion Compound CeIn3",
H. Shishido, T. Shibauchi, K. Yasu, T. Kato, H. Kontani, T. Terashima, and Y. Matsuda,
Science 327, 980-983 (2010).
"Microwave Penetration Depth and Quasiparticle Conductivity of PrFeAsO1-y Single Crystals: Evidence for a Full-Gap Superconductor",
K. Hashimoto, T. Shibauchi, T. Kato, K. Ikada, R. Okazaki, H. Shishido, M. Ishikado, H. Kito, A. Iyo, H. Eisaki, S. Shamoto, and Y. Matsuda,
Phys. Rev. Lett. 102, 017002 (2009).
