Takafumi SATO
Associate Professor, Department of Physics, Tohoku University- Topics of Research：
- Angle-resolved photoemission spectroscopy of topological insulators
■ Laboratory Website
■ Description of Research
[1194KB]
RESEARCH
I have developed high-resolution angle-resolved photoemission spectrometers at Tohoku University, and have studied fine electronic states in the vicinity of the Fermi level of high-temperature copper-oxide superconductors. My recent research also involves the novel electronic properties of iron-pnictide superconductors, graphene, and Rashba metals.
In this project, we study electronic states of topological insulators and related materials by high-resolution spin- and angle-resolved photoemission spectroscopy.
EDUCATION
- 1997
- Bachelor of Science (Physics), Tohoku University
- 2002
- Ph.D. (Science), Tohoku University
PROFESSIONAL EXPERIENCE
- 2002
- JSPS Fellow (PD)
- 2002
- Assistant Professor, Department of Physics, Tohoku University.
- 2009
- Assistant Professor, Center for the Advancement of Higher Education, Tohoku University.
- 2010
- Associate Professor, Department of Physics, Tohoku University.
HONORS AND AWARDS
- 2008
- Young Scientist Award of the Physical Society of Japan
- 2009
- The Young Scientists' Prize(The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology)
SELECTION OF PUBLICATIONS
"Experimental realization of a topologicalcrystalline insulator in SnTe",
Y. Tanaka, Z. Ren, T. Sato, K. Nakayama, S. Souma, T. Takahashi, K. Segawa, Y. Ando,
Nature Physics (Advanced Online Publication) , Online (Sep. 2012).
"Tunable Dirac cone in the topological insulatorBi2-xSbxTe3-ySey"
T. Arakane, , S. Souma, K. Kosaka, K. Nakayama, M. Komatsu, T. Takahashi, Zhi Ren, ,
Nature Communications 3, 636-1-5 (Jan. 2012).
"Unexpected Mass Acquisition of Dirac Fermions at the Quantum Phase Transition of a Topological Insulator",
T. Sato, K. Segawa, K. Kosaka, S. Souma, K. Nakayama, K. Eto, T. Minami, Y. Ando, T. Takahashi,
Nature Physics 7, 840-844 (Aug. 2011).
"Direct evidence for Dirac-cone Topological Surface States in Ternary Chalcogenide TlBiSe2",
T. Sato, K. Segawa, H. Guo, K. Sugawara, S. Souma, T. Takahashi and Yoichi Ando
Phys. Rev. Lett. 105, 136802-(1-4) (2010).
"Band structure and Fermi surface of an extremely overdoped iron-based superconductor KFe2As2",
T. Sato, K. Nakayama, Y. Sekiba, P. Richard, Y.-M. Xu, S. Souma, T. Takahashi, G. F. Chen, J. L. Luo, N. L. Wang, and H. Ding
Phys. Rev. Lett. 103, 047002-(1-4) (2009).
"Fermi-surface-dependent superconducting gap in C6Ca",
K. Sugawara, T. Sato, and T. Takahashi
Nature Physics 5, 40-43 (2009).
"Observation of Band Renormalization Effects in Hole-Doped High-Tc Superconductors",
T. Sato, H. Matsui, T. Takahashi, H. Ding, H.-B. Yang, S.-C. Wang, T. Fujii, T. Watanabe, A. Matsuda, T. Terashima, and K. Kadowaki
Phys. Rev. Lett. 91, 157003-(1-4) (2003).
"Observation of dx2-y2-like superconducting gap in an electron-doped high-temperature superconductor",
T. Sato, T. Kamiyama, T. Takahashi, K. Kurahashi, and K. Yamada
Science 291, 1517-1519 (2001).
