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Electron dephasing near zero temperature: an experimental review

J. J. Lin·T. J. Li·Y. L. Zhong
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Abstract

The behavior of the electron dephasing time near zero temperature, $τ_ϕ^0$, has recently attracted vigorous attention. This renewed interest is primarily concerned with whether $τ_ϕ^0$ should reach a finite or an infinite value as $T \to$ 0. While it is accepted that $τ_ϕ^0$ should diverge if there exists only electron-electron (electron-phonon) scattering, several recent measurements have found that $τ_ϕ^0$ depends only very weakly on temperature, if at all, when $T$ is sufficiently low. This article discusses the current experimental status of "the saturation problem", and concludes that the origin(s) for this widely observed saturation are still unresolved.

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J. J. Lin, T. J. Li, Y. L. Zhong. 2002-09-12. Electron dephasing near zero temperature: an experimental review. https://doi.org/10.1143/jpsjs.72sa.7

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