Title

Microscopic model of a phononic refrigerator

Authors

Authors

L. Arrachea; E. R. Mucciolo; C. Chamon;R. B. Capaz

Comments

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Abbreviated Journal Title

Phys. Rev. B

Keywords

TRANSPORT; Physics, Condensed Matter

Abstract

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.

Journal Title

Physical Review B

Volume

86

Issue/Number

12

Publication Date

1-1-2012

Document Type

Article

Language

English

First Page

9

WOS Identifier

WOS:000308867200010

ISSN

1098-0121

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