Probe-configuration dependent dephasing in a mesoscopic interferometer
classification
❄️ cond-mat.mes-hall
keywords
dephasingvoltageconfigurationdependencefluctuationsagreementaharonov-bohmballistic
read the original abstract
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 et al. (J. Phys. Soc. Jpn. 71, 2094 (2002)). Voltage fluctuations in the measurement circuit are shown to be the source of the configuration dependence.
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