双量子线隧穿中自旋-电荷分离的特征
介观与纳米尺度物理
2007-05-23 v1
摘要
我们在由 GaAs/AlGaAs 双层异质结构边缘处由两根量子线通过长窄隧穿结合的系统中，呈现出自旋-电荷分离的证据。通过追踪电子谱峰在电导随施加电压（决定隧穿电子能量）和磁场（决定沿线轴动量偏移）的依赖性，检测到系统中多个激发速度。线缆的边界很重要，导致对短脉冲测量中出现的特征性干涉图样。我们表明，实验观察到的电导振荡幅度随电压偏置的调制，也可以用模型中基本激发在相互作用线中发生的自旋-电荷分离来解释。
关键词
引用
@article{arxiv.cond-mat/0312159,
title = {Signatures of spin-charge separation in double--quantum-wire tunneling},
author = {Yaroslav Tserkovnyak and Bertrand I. Halperin and Ophir M. Auslaender and Amir Yacoby},
journal= {arXiv preprint arXiv:cond-mat/0312159},
year = {2007}
}
备注
Manuscript for proceedings of the NATO workshop on Theory of Quantum Transport in Metallic and Hybrid Nanostructures, St. Petersburg, August 2003, to be published by Kluwer Academic Publishers B.V., Dordrecht, The Netherlands, edited by V. Kozub and V. Vinokur. Talk was presented by B. I. Halperin