Defining the effective temperature of a quantum driven system from current-current correlation functions
We calculate current-current correlation functions and find an expression for the zero-frequency noise of multiterminal systems driven by harmonically time-dependent voltages within the Keldysh nonequilibrium Green's functions formalism. We also propose a fluctuation-dissipation relation for cu...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/56794 |
| Acceso en línea: | http://hdl.handle.net/11336/56794 |
| Access Level: | acceso abierto |
| Palabra clave: | Quantum Transport Pumping Noise https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| Sumario: | We calculate current-current correlation functions and find an expression for the zero-frequency noise of multiterminal systems driven by harmonically time-dependent voltages within the Keldysh nonequilibrium Green's functions formalism. We also propose a fluctuation-dissipation relation for currentcurrent correlation functions to define an effective temperature.We discuss the behavior of this temperature and compare it with the local temperature determined by a thermometer and with the effective temperature defined from a single-particle fluctuation-dissipation relation. We show that for low frequencies all the definitions of the temperature coincide. © Springer-Verlag 2012. |
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