Spin-orbit effects on resonant tunneling conductance through a double-quantum-dot system

Hong Yi Chen, Vadim Apalkov, Tapash Chakraborty

研究成果: 雜誌貢獻文章同行評審

3 引文 斯高帕斯(Scopus)

摘要

Spin-orbit interaction in a laterally coupled double-quantum-dot system modifies both the energy spectra and the corresponding wavefunctions. These modifications introduce new features in the resonant tunneling measurements. There are new spin-orbit-induced peaks in the resonant conductance versus energy dependence. The widths and the shapes of the peaks are determined by the strength of the coupling between the states of the quantum dots. The coupling occurs through the continuous states of the leads. The width of the higher energy peak in the spin-orbit tunneling doublet is larger than the width of the lower energy peak. Spin-orbit coupling also introduces an additional interference, which results in an anti-resonant behavior of the tunneling current. We also report on our study of the interplay between the spin-orbit effects and the direct tunneling between quantum dots.

原文英語
文章編號135221
期刊Journal of Physics Condensed Matter
20
發行號13
DOIs
出版狀態已發佈 - 2008 四月 2
對外發佈Yes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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