Education

University of Tokyo, B.S., 1996
University of Tokyo, M.S., 1998

Employment

Research assistant (part time job), Institute for Solid State Physics, 2000-2001

Research Interests

Transport properties in multilayered quantum Hall systems
A two-dimensional electron gas (2DEG) exhibits the quantum Hall effect (QHE) when it is placed in a strong perpendicular magnetic field. As the two-dimensionality is an essential prerequisite for the occurence of QHE, it is interesting what happens when the degree of freedom for the motion perpendicular to the two-dimensional plane is introduced. The integer QHE in a single layer 2DEG is descrived in terms of the edge channel. In a multilayered 2DEG system, weak interlayer transfer between the edge channels in adjacent layers leads to formation of a conducting surface seath called "chiral surface seath". Transport properties of the chiral surface seath, such as current-voltage characteristics or magnetoresistance, are intensively studied.

Angular dependent magnetoresistance oscillation
The angular dependent magnetoresistance oscillation (ADMRO) effect manifests itself as a series of resitance peaks in an angular trace of magnetoresistance. Since the essensial requirement for the occurence of the ADMRO effect is a weakly modulated cylindrical Fermi surface, the ADMRO effect is expected in various quasi-two-dimensional systems. The semiconductor superlattice system offers a large degree of freedom for Fermi surface tailoring by adjusting superlattice period and doping concentration. The ADMRO effect is studied systematicly using semiconductor superlattices.