Quantum electron transport in disordered wires with symplectic symmetry
Quantum electron transport in disordered wires with symplectic symmetry
复制标题
辛对称无序线中的量子电子传输
DOI：
10.1143/jpsj.73.1430
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发表时间：
2004
影响因子：
1.7
通讯作者：
Y. Takane
中科院分区：
文献类型：
--
作者：
Y. Takane
用超对称场论研究了具有辛对称性的无序导线的电导。特别注意的是集中在导电通道的数量是奇数的情况下。这种情况可以在金属碳纳米管中实现。使用Zirnbauer的超傅立叶分析得到的平均无量纲电导。结果表明，随着导线长度的增加，奇沟道情况下，→1，而在普通偶沟道情况下，→0。应该强调的是，所谓的Zirnbauer零模，这一直被认为是非物理的，是必不可少的描述在奇通道的情况下的异常行为。
The conductance of disordered wires with symplectic symmetry is studied by the supersymmetric field theory. Special attention is focused on the case where the number of conducting channels is odd. Such a situation can be realized in metallic carbon nanotubes. The average dimensionless conductance is obtained using Zirnbauer's super-Fourier analysis. It is shown that with increasing wire length, →1 in the odd-channel case, while →0 in the ordinary even-channel case. It should be emphasized that the so-called Zirnbauer's zero mode, which has been believed to be unphysical, is essential for describing the anomalous behavior in the odd-channel case.