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 silver wires. Because of the improved electron cooling in the wires, the MW-induced dephasing is observed without a concomitant overheating of electrons over wide ranges of the MW power PMW and frequency f. The observed dependences of the conductivity and MW-induced dephasing rate on PMW and f are in agreement with the theory by Altshuler, Aronov, and Khmelnitsky [Solid State Commun.SSCOA40038-1098 39, 619 (1981)10.1016/0038-1098(81)90336-7]. 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.

Original languageEnglish (US)
Article number086801
JournalPhysical review letters
Volume96
Issue number8
DOIs
StatePublished - 2006

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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