Paper Title:
Pumping Spin and Charge Currents from Applying a Time-Variant Field and a Magnetic Field to a Quantum Dot
  Abstract

Photon-electron pumping effects on a quantum dot connected to two magnetic leads in the presence of both via-dot and over-dot tunneling channels have been investigated by the evolution operator approach. It is found that a time-variant field applied to the quantum dot may give rise to charge and spin pumping at zero bias voltage for asymmetric magnetic junctions. When the magnetic field switch on,the spin-up and spin-down current can be considerably separated,then the highly spin polarized current is also generated.

  Info
Periodical
Key Engineering Materials (Volumes 480-481)
Edited by
Yanwen Wu
Pages
1446-1451
DOI
10.4028/www.scientific.net/KEM.480-481.1446
Citation
J. M. Yao, "Pumping Spin and Charge Currents from Applying a Time-Variant Field and a Magnetic Field to a Quantum Dot", Key Engineering Materials, Vols. 480-481, pp. 1446-1451, 2011
Online since
June 2011
Authors
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hong Zhang, Shui Yuan Chen, Su Zhen Tang, Wen Pao Ke, Heng Lai, Zhi Gao Huang
Abstract:La2/3(Ca0.6Ba0.4)1/3Mn1-xVxO3 (x=0, 0.03, 0.05, 0.07, 0.10, 0.15, 0.20) nanoparticles were synthesized using sol-gel technology. The...
901
Authors: Viorel Sandu, Stelian Popa, C. Plapcianu, Elena Sandu, N. Hurduc, I. Nor
Abstract:We report the transport and magnetic properties of sintered CrO2-polymer composites. In order to improve the elastic properties of the...
326
Authors: Zhen Zhen Weng, Zhi Gao Huang, Wen Xiong Lin
Abstract:The interatomic exchange interactions and the electronic structure of Co-doped ZnO with and without oxygen vacancy have been investigated by...
124
Authors: Zhen Hui Sun, Lan Li Chen, Zhi Hua Xiong
Abstract:We have investigated the magnetic properties, the electronic structure, and the formation energy of wurtzite GaN nanowires (NWs) with gallium...
2160
Authors: Bo Wu, Xiu De Yang, Song Zhang
Chapter 1: Materials Design
Abstract:By using the first-principles calculations within the density functional theory (DFT), we investigate the structure,...
403