Symmetry crossover in quantum wires with spin-orbit interaction

被引：5
|
作者：
Kaneko, Tomoaki [1 ]
Koshino, Mikito [2 ]
Ando, Tsuneya [2 ]
机构：
[1] Natl Inst Adv Ind Sci & Technol, RICS, Tsukuba, Ibaraki 3058568, Japan
[2] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan
来源：
PHYSICAL REVIEW B | 2010年 / 81卷 / 15期
关键词：
STATISTICAL-THEORY; ENERGY-LEVELS; CONDUCTANCE FLUCTUATIONS; MAGNETIC-FIELD; LOCALIZATION; RELAXATION; RESISTANCE; CHANNELS; STATES;
D O I：
10.1103/PhysRevB.81.155310
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We systematically calculate localization length and conductance fluctuations in quantum wires with spin-orbit interaction to demonstrate that the effective symmetry of the system is determined by the relative magnitude between the spin-relaxation length and the localization length. When the localization length is much smaller than the spin-relaxation length, the localization length is close to the value of wires without spin-orbit interaction. When the localization length exceeds the spin-relaxation length, the localization length is enhanced and approaches that of wires with strong spin-orbit interaction. The same symmetry crossover occurs in conductance fluctuations.
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页数：5
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