We present measurements of the phase coherence time τφ in six quasi-1D Au wires and clearly show that τφ is temperature independent at low temperatures. We suggest that zero-point fluctuations of the phase coherent electrons are responsible for the observed saturation of τφ. We introduce a new functional form for the temperature dependence and present the results of a calculation for the saturation value of τφ. This explains the observed temperature dependence of our samples as well as many 1D and 2D systems reported to date.
Published in Physical Review Letters, Volume 78, Issue 17, 1997, pages 3366-3369.
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
© 1997 The American Physical Society.