Decoherence and single electron charging in an electronic Mach-Zehnder interferometer
Decoherence and single electron charging in an electronic Mach-Zehnder interferometer
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DOI：
10.1103/physrevb.75.033315
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发表时间：
2007-01-01
影响因子：
3.7
通讯作者：
Strunk, C.
中科院分区：
文献类型：
--
作者：
Litvin, L. V.;Tranitz, H. -P.;Strunk, C.
我们研究了在整数量子霍尔区使用边缘通道的电子马赫-曾德尔干涉仪中量子干涉的温度和电压依赖性。干涉条纹的振幅明显小于理论预期；然而，可见性对温度和偏置电压的函数依赖性与理论预测非常吻合。叠加在Aharonov-Bohm （AB）振荡上，观察到周期小六倍的电导振荡。后者仅取决于栅极电压而不取决于AB相，并且可能与单电子充电有关。
We investigate the temperature and voltage dependence of the quantum interference in an electronic Mach-Zehnder interferometer using edge channels in the integer quantum-Hall regime. The amplitude of the interference fringes is significantly smaller than expected from theory; nevertheless the functional dependence of the visibility on temperature and bias voltage agrees very well with theoretical predictions. Superimposed on the Aharonov-Bohm (AB) oscillations, a conductance oscillation with a six times smaller period is observed. The latter depends only on gate voltage and not on the AB phase, and may be related to single electron charging.