dc response of a dissipative driven mesoscopic ring
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 ΦM(t)=Φt is investigated. We analyze the electron transport in different kinds of one-dimensional structures bended into a ring geometry: a clean o...
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2004
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v70_n15_p155407_Arrachea http://hdl.handle.net/20.500.12110/paper_01631829_v70_n15_p155407_Arrachea |
| Aporte de: |
| Sumario: | 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 ΦM(t)=Φt is investigated. We analyze 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 nonequilibrium Green's function, which allows us to solve the problem exactly. |
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