dc-Response of a Dissipative Driven Mesoscopic Ring

Details dc-Response of a Dissipative Driven Mesoscopic Ring dc-Response of a Dissipative Driven Mesoscopic Ring

2004-05-11

arxiv.org/abs/cond-mat/0405226v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 9 figures. To appear in PRB

Scientific paper

10.1103/PhysRevB.70.155407

The behavior of the dc-component of the current along a quantum loop of tight-binding electrons threaded by a magnetic flux that varies linearly in time Phi_M(t)= Phi t is investigated. We analize the electron transport in different kinds of one-dimensional structures bended into a ring geometry: a clean one-dimensional metal, a chain with a two-band structure and a disordered chain. Inelastic scattering events are introduced through the coupling to a particle reservoir. We use a theoretical treatment based in Baym-Kadanoff-Keldysh non-equilibrium Green functions, which allows us to solve the problem exactly.

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