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Abstract:

We review a recent theoretical development based on non-equilibrium Green's function formalism to study heat transport in nanomechanical devices modeled by phononic systems of coupled quantum oscillators driven by ac forces and connected to phononic reservoirs. We present the relevant equations to calculate the heat currents flowing along different regions of the setup, as well as the power developed by the time-dependent forces. We also present different strategies to evaluate the Green's functions exactly or approximately within the weak driving regime. We finally discuss the different mechanisms in which the ac driving forces deliver the energy. We show that, besides generating heat, the forces may operate exchanging energy as a quantum engine.

Registro:

Documento: Conferencia
Título:Nonequilibrium Green's functions in the study of heat transport of driven nanomechanical systems
Autor:Arrachea, L.; Rizzo, B.
Ciudad:Jyvaskyla
Filiación:Departamento de f'Isica e IFIBA, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, (1428) Buenos Aires, Argentina
Palabras clave:Heat transfer; Different mechanisms; Nanomechanical device; Nanomechanical systems; Non-equilibrium Green's function; Non-equilibrium Green's function formalism; Quantum oscillators; Theoretical development; Time dependent; Quantum chemistry
Año:2013
Volumen:427
DOI: http://dx.doi.org/10.1088/1742-6596/427/1/012012
Título revista:5th Interdisciplinary Conference on Progress in Nonequilibrium Green's Functions, PNGF 2012
Título revista abreviado:J. Phys. Conf. Ser.
ISSN:17426588
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_17426588_v427_n_p_Arrachea.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17426588_v427_n_p_Arrachea

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Citas:

---------- APA ----------
Arrachea, L. & Rizzo, B. (2013) . Nonequilibrium Green's functions in the study of heat transport of driven nanomechanical systems. 5th Interdisciplinary Conference on Progress in Nonequilibrium Green's Functions, PNGF 2012, 427.
http://dx.doi.org/10.1088/1742-6596/427/1/012012
---------- CHICAGO ----------
Arrachea, L., Rizzo, B. "Nonequilibrium Green's functions in the study of heat transport of driven nanomechanical systems" . 5th Interdisciplinary Conference on Progress in Nonequilibrium Green's Functions, PNGF 2012 427 (2013).
http://dx.doi.org/10.1088/1742-6596/427/1/012012
---------- MLA ----------
Arrachea, L., Rizzo, B. "Nonequilibrium Green's functions in the study of heat transport of driven nanomechanical systems" . 5th Interdisciplinary Conference on Progress in Nonequilibrium Green's Functions, PNGF 2012, vol. 427, 2013.
http://dx.doi.org/10.1088/1742-6596/427/1/012012
---------- VANCOUVER ----------
Arrachea, L., Rizzo, B. Nonequilibrium Green's functions in the study of heat transport of driven nanomechanical systems. J. Phys. Conf. Ser. 2013;427.
http://dx.doi.org/10.1088/1742-6596/427/1/012012