Microscopic model of a phononic refrigerator

We analyze a simple microscopic model to pump heat from a cold to a hot reservoir in a nanomechanical system. The model consists of a one-dimensional chain of masses and springs coupled to a back gate through which a time-dependent perturbation is applied. The action of the gate creates a moving pho...

Descripción completa

Guardado en:
Detalles Bibliográficos
Publicado: 2012
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v86_n12_p_Arrachea
http://hdl.handle.net/20.500.12110/paper_10980121_v86_n12_p_Arrachea
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_10980121_v86_n12_p_Arrachea
record_format dspace
spelling paper:paper_10980121_v86_n12_p_Arrachea2023-06-08T16:07:52Z Microscopic model of a phononic refrigerator We analyze a simple microscopic model to pump heat from a cold to a hot reservoir in a nanomechanical system. The model consists of a one-dimensional chain of masses and springs coupled to a back gate through which a time-dependent perturbation is applied. The action of the gate creates a moving phononic barrier by locally pinning a mass. We solve the problem numerically using a nonequilibrium Green's function technique. For low driving frequencies and for sharp traveling barriers, we show that this microscopic model realizes a phonon refrigerator. © 2012 American Physical Society. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v86_n12_p_Arrachea http://hdl.handle.net/20.500.12110/paper_10980121_v86_n12_p_Arrachea
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We analyze a simple microscopic model to pump heat from a cold to a hot reservoir in a nanomechanical system. The model consists of a one-dimensional chain of masses and springs coupled to a back gate through which a time-dependent perturbation is applied. The action of the gate creates a moving phononic barrier by locally pinning a mass. We solve the problem numerically using a nonequilibrium Green's function technique. For low driving frequencies and for sharp traveling barriers, we show that this microscopic model realizes a phonon refrigerator. © 2012 American Physical Society.
title Microscopic model of a phononic refrigerator
spellingShingle Microscopic model of a phononic refrigerator
title_short Microscopic model of a phononic refrigerator
title_full Microscopic model of a phononic refrigerator
title_fullStr Microscopic model of a phononic refrigerator
title_full_unstemmed Microscopic model of a phononic refrigerator
title_sort microscopic model of a phononic refrigerator
publishDate 2012
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10980121_v86_n12_p_Arrachea
http://hdl.handle.net/20.500.12110/paper_10980121_v86_n12_p_Arrachea
_version_ 1768542657425965056

Ejemplares similares