Theoretical study on quantum transport phenomena originating from unusual electronic states

在具有自旋轨道相互作用的半导体和石墨烯中研究了无质量狄拉克粒子的量子输运现象。在前一种情况下，非零自旋霍尔电导生存的有限系统与接触的任何杂质密度。在后者中，特殊的传导给出了低杂质密度的系统，而安德森本地化发生的情况下，与正常的二维电子系统的高杂质密度。

Quantum transport phenomena due to the massless Dirac particles have been studied in semiconductors with spin-orbit interaction and graphene. In the former case, non-zero spin-Hall conductance survives for a finite system with contacts for any impurity density. In the latter, peculiar conduction is given for systems of low impurity density, while Anderson localization takes place for high impurity density as is the case with normal two-dimensional electronic systems.