Transport Properties of Two Dimensional Electrons in Magnetic Fields with Sine-Like Modulation
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概要
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We have studied quantum tranlports in two dimensional electron gas (2DEG) numerically, wheremagnetic fields with sine-type modulation are applied perpendicular to the plane of 2DEG. Due to the non-homogeneous magnetic fields, the system becomes chaotic. We use tight-binding model and investigate the energy level statistics and the two terminal conductance. Depending on the spatialsymmetry of the magnetic fields, the system belongs to the unitary class or the orthogonal, which isreflected by the energy level statistics. Attaching leads further destroys the symmetry, and the universal conductance fluctuation for the unitary class is observed. The fractal behavior of the magnetoconductance is also observed.
- 社団法人日本物理学会の論文
- 2003-03-15
著者
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Yoshida Junji
Department of Thoracic Oncology, National Cancer Center Hospital East
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Yoshida Junji
Department Of Cardiorenal Cerebrovascular Medicine Kagawa University Faculty Of Medicine
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Yoshida J
Department Of Physics Sophia Uneversity
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OHOTSUKi Tomi
Department of Physics, Sophia Uneversity
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Ohtsuki Tomi
Department Of Physics Faculty Of Science University Of Tokyo
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Ohotsuki Tomi
Department Of Physics Sophia Uneversity
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