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Type: Artigo de periódico
Title: Zener Transitions In Dissipative Driven Systems
Author: Gefen Y.
Ben-Jacob E.
Caldeira A.O.
Abstract: The effect of inelastic interactions on Zener transitions is studied in the context of externally driven systems (flux-driven normal metallic rings, current-biased tunnel junctions, etc.). We employ a time-dependent Hamiltonian and use a two-level approximation to study these systems. We consider a coupling (not necessarily weak) of the system to a phonon bath and allow for a large class of phonon spectra. The coupling tends to reduce the Zener tunneling. The Zener transitions are enhanced at finite temperatures. We also consider the effect of a phenomenological relaxation time on the behavior of the system, and express the (nonlinear) resistance R in terms of and the other important physical parameters. When the bias goes to zero, R vanishes. © 1987 The American Physical Society.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.36.2770
Date Issue: 1987
Appears in Collections:Unicamp - Artigos e Outros Documentos

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