Dephasing in Disordered Conductors due to Fluctuating Electric Fields

Abstract

We develop a novel eikonal expansion for the Cooperon to study the effect of space- and time-dependent electric fields on the dephasing rate of disordered conductors. For randomly fluctuating fields with arbitrary covariance we derive a general expression for the dephasing rate which is free of infrared divergencies in reduced dimensions. For time-dependent external fields with finite wavelength and sufficiently small amplitude we show that the dephasing rate is proportional to the square root of the electromagnetic power coupled into the system, in agreement with data by Wang and Lindelof [Phys. Rev. Lett. {\bf{59}}, 1156 (1987)].

17 Latex-pages, one figure; we now give more technical details and discuss the screening problem more carefully; to appear in Phys. Rev. B

References in corpus (8)

• Intrinsic Decoherence in Mesoscopic Systems
• Quantum Decoherence in Disordered Mesoscopic Systems
• Decoherence and Quantum Fluctuations
• Low-Temperature Dephasing in Disordered Conductors: the Effect of ``1/f'' Fluctuations
• Phase Relaxation of Electrons in Disordered Conductors
• Comment on "Quantum Decoherence in Disordered Mesoscopic Systems"
• Dynamical scaling at the quantum Hall transition: Coulomb blockade versus phase breaking
• Non-linear effects and dephasing in disordered electron systems

Cited by in corpus (5)

• Decoherence in weak localization I: Pauli principle in influence functional
• Strong coupling, weak impact: Phonon coupling versus pure dephasing in the photon statistics of cooperative emitters
• Effect of Nyquist Noise on the Nyquist Dephasing Rate in 2d Electron Systems
• Frequency-dependence of the Nyquist noise contribution to the dephasing rate in disordered conductors
• Low temperature dephasing saturation from elastic magnetic spin disorder and interactions