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Takuma Ohashi
Assistant Professor
Group:
Theoretical Condensed Matter Physics, Ogawa Group
Office:
Room H622, Graduate School of Science (Toyonaka Campus map )
Address:
1-1 Machikaneyama, Toyonaka, Osaka 560-0043
e-Mail:
ohashi[atmark]acty.phys.sci.osaka-u.ac.jp
WEB:
http://wwwacty.phys.sci.osaka-u.ac.jp/~ohashi/index_e.html
Research Interests:

 Mott transition in the electron systems with geometrical frustration and/or Orbital degrees of freedom
 Novel quantum phases in frustrated systems
 Electron correlations in photo-excited semiconductors
 Kondo effects in quantum dots

Selected Publications:

Finite-Temperature Mott Transition in Two-Dimensional Frustrated Hubbard Models
T. Ohashi, T. Momoi, H. Tsunetsugu, and N. Kawakami
Prog. Ther. Phys. Suppl., 176, 97 (2008).

Finite temperature Mott transition in Hubbard model on anisotropic triangular lattice
T. Ohashi, T. Momoi, H. Tsunetsugu, and N. Kawakami
Physical Review Letters, Vol. 100, pp. 076402-1-4 (2008).

Mott Transition in Kagome Lattice Hubbard Model
T. Ohashi, N. Kawakami, and H. Tsunetsugu
Physical Review Letters, Vol. 97, pp. 066401-1-4 (2006).

Magnetic properties of a Kondo insulator with RKKY interaction: Extended dynamical mean field study
T. Ohashi, S. Suga, and N. Kawakami
Journal of Physics: Condensed Matter, Vol. 17, pp. 4547-4558 (2005).

Field-induced phase transitions in a Kondo insulator
T. Ohashi, A. Koga, S. Suga, and N. Kawakami
Physical Review B, Vol. 70, pp. 245104-1-6 (2004).

Biography:

Education:

March, 2001 B.E.

Department of Applied Physics, Osaka University

March, 2003 M.E.

Department of Applied Physics, Osaka University

March, 2006 Ph.D.

Department of Applied Physics, Osaka University



Professional Employment:

April, 2006 - March, 2007

Post-doc, Condensed Matter Theory Lab., RIKEN

April, 2007 - present

Assistant Professor, Department of Physics, Osaka University
Visiting Member, Condensed Matter Theory Lab., RIKEN