Electronic dephasing in wires due to metallic gates

Abstract

The dephasing effect of metallic gates on electrons moving in one quasi--one--dimensional diffusive wires is analyzed. The incomplete screening in this geometry implies that the effect of the gate can be described, at high energies or temperatures, as an electric field fluctuating in time. The resulting system can be considered a realization of the Caldeira-Leggett model of an environment coupled to many particles. Within the range of temperatures where this approximation is valid, a simple estimation of the inverse dephasing time gives ${\tau }_{\mathrm{G}}^{-1}\propto T^{1/2}$.

6 pages

References in corpus (4)

• Dephasing of Electrons in Mesoscopic Metal Wires
• Dephasing by extremely dilute magnetic impurities revealed by Aharonov-Bohm oscillations
• Electronic lifetimes in ballistic quantum dots electrostatically coupled to metallic environments
• Low temperature properties of a quantum particle coupled to dissipative environments

Cited by in corpus (8)

• Surface dissipation in nanoelectromechanical systems: Unified description with the standard tunneling model and effects of metallic electrodes
• Dissipation in graphene and nanotube resonators
• Dissipation-driven quantum phase transitions in a Tomonaga-Luttinger liquid electrostatically coupled to a metallic gate
• Electron coherence at low temperatures: The role of magnetic impurities
• Interference in presence of Dissipation
• A many-fermion generalization of the Caldeira-Leggett model
• Fixed Points of the Dissipative Hofstadter Model
• Phase diagram of the dissipative quantum particle in a box