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Microwave-Induced Dephasing in One-Dimensional Metal Wires

J. Wei·S. Pereverzev·M. E. Gershenson
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Abstract

We report on the effect of monochromatic microwave (MW) radiation on the weak localization corrections to the conductivity of quasi-one-dimensional (1D) silver wires. Due to the improved electron cooling in the wires, the MW-induced dephasing was observed without a concomitant overheating of electrons over wide ranges of the MW power $P_{MW}$ and frequency $f$. The observed dependences of the conductivity and MW-induced dephasing rate on $P_{MW}$ and $f$ are in agreement with the theory by Altshuler, Aronov, and Khmelnitsky \cite{Alt81}. Our results suggest that in the low-temperature experiments with 1D wires, saturation of the temperature dependence of the dephasing time can be caused by an MW electromagnetic noise with a sub-pW power.

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J. Wei, S. Pereverzev, M. E. Gershenson. 2006-01-29. Microwave-Induced Dephasing in One-Dimensional Metal Wires. https://doi.org/10.1103/physrevlett.96.086801

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