Conductance of Disordered Wires with Symplectic Symmetry: Comparison between Odd- and Even-Channel Cases

DOI Web Site Web Site BIBCODE 被引用文献20件 参考文献24件
  • Takane Yositake
    Department of Quantum Matter, Graduate School of Advanced Sciences of Matter, Hiroshima University

この論文をさがす

抄録

The conductance of disordered wires with symplectic symmetry is studied by numerical simulations on the basis of a tight-binding model on a square lattice consisting of M lattice sites in the transverse direction. If the potential range of scatterers is much larger than the lattice constant, the number N of conducting channels becomes odd (even) when M is odd (even). The average dimensionless conductance ⟨g⟩ is calculated as a function of system length L. It is shown that when N is odd, the conductance behaves as ⟨g⟩→1 with increasing L. This indicates the absence of Anderson localization. In the even-channel case, the ordinary localization behavior arises and ⟨g⟩ decays exponentially with increasing L. It is also shown that the decay of ⟨g⟩ is much faster in the odd-channel case than in the even-channel case. These numerical results are in qualitative agreement with existing analytic theories.

収録刊行物

被引用文献 (20)*注記

もっと見る

参考文献 (24)*注記

もっと見る

関連プロジェクト

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ