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Titolo:
Heat flow through an insulating nanocrystal
Autore:
Leitner, DM; Wolynes, PG;
Indirizzi:
Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA Univ Calif San Diego La Jolla CA USA 92093 iochem, La Jolla, CA 92093 USA Univ Illinois, Dept Chem, Urbana, IL 61801 USA Univ Illinois Urbana IL USA 61801 linois, Dept Chem, Urbana, IL 61801 USA
Titolo Testata:
PHYSICAL REVIEW E
fascicolo: 3, volume: 61, anno: 2000,
pagine: 2902 - 2908
SICI:
1063-651X(200003)61:3<2902:HFTAIN>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
THERMAL-CONDUCTIVITY; CHAINS; OSCILLATORS; TRANSPORT; ENERGY; SIZE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Leitner, DM Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA Univ Calif San Diego La Jolla CA USA 92093 olla, CA 92093 USA
Citazione:
D.M. Leitner e P.G. Wolynes, "Heat flow through an insulating nanocrystal", PHYS REV E, 61(3), 2000, pp. 2902-2908

Abstract

We calculate the low temperature, quantum mechanical rate of heat flow through a nanocrystal due to phonon transport by solving a many-body Schrodinger equation for oscillators in Fermi resonance. By analogy to Raman scattering through molecules, we find that normal processes due to anharmonicity of the nanocrystal give rise, over an intermediate range of lengths, to a largely length-independent thermal conductivity that resembles Fourier's law,but is in fact of a different origin. For longer crystals conductivity rises with length, as predicted for a harmonic solid. For shorter nanocrystalsthermal conductivity also rises with length, followed by a turnover regimein which thermal conductivity is size specific.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 17:46:24