Probe-configuration-dependent dephasing in a mesoscopic interferometer

Article

关键词: PHASE BREAKING;    TEMPERATURE-DEPENDENCE;    QUANTUM;    RELAXATION;    SATURATION;    TIME;   

DOI  :  10.1103/PhysRevB.68.161310

来源: SCIE

【 摘 要 】

Dephasing in a ballistic four-terminal Aharonov-Bohm geometry due to charge and voltage fluctuations is investigated. Treating two terminals as voltage probes, we find a strong dependence of the dephasing rate on the probe configuration in agreement with a recent experiment by Kobayashi, Aikawa, Katsumoto, and Iye [J. Phys. Soc. Jpn. 71, 2094 (2002)]. Voltage fluctuations in the measurement circuit are shown to be the source of the configuration dependence.

【 授权许可】

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