8 papers
New universal conductance fluctuation of mesoscopic systems in the crossover regime from metal to insulator
Zhenhua Qiao, Yanxia Xing, Jian Wang
We report a theoretical investigation on conductance fluctuation of mesoscopic systems. Extensive numerical simulations on quasi-one dimensional, two dimensional, and quantum dot s…
Spin Bias Measurement Based on a Quantum Point Contact
Yanxia Xing, Qing-feng Sun, Jian Wang
Electron charge transport through a quantum point contact (QPC) driven by an asymmetric spin bias is studied. A large charge current is induced when the transmission coefficient of…
Spin Nernst effect and Nernst effect in two-dimensional electron systems
Shu-guang Cheng, Yanxia Xing, Qing-feng Sun +1
We study the Nernst effect and the spin Nernst effect, that a longitudinal thermal gradient induces a transverse voltage and a spin current. A mesoscopic four-terminal cross-bar de…
Double quantum dot as detector of spin bias
Qing-feng Sun, Yanxia Xing, Shun-Qing Shen
It was proposed that a double quantum dot can be used to be a detector of spin bias. Electron transport through a double quantum dot is investigated theoretically when a pure spin…
Influence of dephasing process on the quantum Hall effect and the spin Hall effect
Yanxia Xing, Qing-feng Sun, Jian Wang
We study the influence of the phase relaxation process on Hall resistance and spin Hall current of a mesoscopic two-dimensional (2D) four-terminal Hall cross-bar with or without Ra…
Symmetry and transport property of spin current induced spin-Hall effect
Yanxia Xing, Qing-feng Sun, Jian Wang
We study the spin current induced spin-Hall effect that a longitudinal spin dependent chemical potential induces a transverse spin conductances . A four ter…