Quantum electron transport in disordered wires with symplectic symmetry

2020-01-27 07:52:01

case analysis carbon Fourier Japan

责任者: Takane, Y. 单位: Dept. of Quantum Matter, Hiroshima Univ., Japan 来源出处: Journal of the Physical Society of Japan(J. Phys. Soc. Jpn. (Japan)),2004/06/,73(6):1430-3 摘要: 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 (g) is obtained using Zirnbauers super-Fourier analysis. It is shown that with increasing wire length, (g) → 1 in the odd-channel case, while (g) → 0 in the ordinary even-channel case. It should be emphasized that the so-called Zirnbauers zero mode, which has been believed to be unphysical, is essential for describing the anomalous behavior in the odd-channel case 关键词: carbon nanotubes;electrical conductivity;Fourier analysis;supersymmetric field theory;quantum electron transport;disordered wires;symplectic symmetry;conductance;supersymmetric field theory;metallic carbon nanotubes;Zirnbauer super-Fourier analysis;C