Intrinsic decoherence in mesoscopic systems
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Citation (published version)Mohanty, P., Jariwala, E.M.Q., and Webb, R.A. (1997). Intrinsic Decoherence in Mesoscopic Systems. Physical Review Letters, 78(17), 3366-3369. doi: 10.1103/PhysRevLett.78.3366
We present measurements of the phase coherence time τ φ in six quasi-1D Au wires and clearly show that τ φ is temperature independent at low temperatures. We suggest that zero-point fluctuations of the phase coherent electrons are responsible for the observed saturation of τ φ . We introduce a new functional form for the temperature dependence and present the results of a calculation for the saturation value of τ φ. This explains the observed temperature dependence of our samples as well as many 1D and 2D systems reported to date.
Rights© 1997 The American Physical Society.