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Titolo:
HEAT-TRANSPORT IN MESOSCOPIC SYSTEMS
Autore:
ANGELESCU DE; CROSS MC; ROUKES ML;
Indirizzi:
CALTECH,114-36 PASADENA CA 91125
Titolo Testata:
Superlattices and microstructures
fascicolo: 3-4, volume: 23, anno: 1998,
pagine: 673 - 689
SICI:
0749-6036(1998)23:3-4<673:HIMS>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
FINE WIRES;
Keywords:
MESOSCOPIC SYSTEMS; THERMAL CONDUCTIVITY; NANOSTRUCTURES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
13
Recensione:
Indirizzi per estratti:
Citazione:
D.E. Angelescu et al., "HEAT-TRANSPORT IN MESOSCOPIC SYSTEMS", Superlattices and microstructures, 23(3-4), 1998, pp. 673-689

Abstract

Phonon heat transport in mesoscopic systems is investigated using methods analogous to the Landauer description of electrical conductance. A 'universal heat conductance' expression that depends on the properties of the conducting pathway only through the mode cutoff frequencies is derived. Corrections due to reflections at the junction between thethermal body and the conducting bridge are found to be small except at very low temperatures where only the lowest few bridge modes are excited. Various non-equilibrium phonon distributions are studied: a narrow band distribution leads to clear steps in the cooling curve, analogous to the quantized resistance values in narrow wires, but a thermal distribution is too broad to show such features. (C) 1998 Academic Press Limited.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/07/20 alle ore 20:49:17