Dephasing in Open Quantum Dots

A. G. Huibers; M. Switkes; C. M. Marcus; K. Campman; A. C. Gossard

doi:10.1016/S0921-4526(98)00129-X

Dephasing in Open Quantum Dots

介观与纳米尺度物理 2009-10-30 v1

作者: A. G. Huibers , M. Switkes , C. M. Marcus , K. Campman , A. C. Gossard

在 arXiv 上查看 ↗ PDF ↗ DOI ↗

摘要

Shape-averaged magnetoconductance (weak localization) is used for the first time to obtain the electron phase coherence time $\tau_{\phi}$ in open ballistic GaAs quantum dots. Values for $\tau_{\phi}$ in the range of temperature T from 0.335 to 4 K are found to be independent of dot area, and are not consistent with the $\tau_{\phi} \propto T^{-2}$ behavior expected for isolated dots. Surprisingly, $\tau_{\phi}(T)$ agrees quantitatively with the predicted dephasing time for disordered two-dimensional electron systems.

关键词

magnetization phase transitions electronic structure

引用

@article{arxiv.cond-mat/9708170,
  title  = {Dephasing in Open Quantum Dots},
  author = {A. G. Huibers and M. Switkes and C. M. Marcus and K. Campman and A. C. Gossard},
  journal= {arXiv preprint arXiv:cond-mat/9708170},
  year   = {2009}
}

备注

9 pages, 4 figures

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