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Heat transport in mesoscopic systems

Angelescu, D. E. and Cross, M and Roukes, M. L. (1998) Heat transport in mesoscopic systems. Superlattices and Microstructures, 23 (3-4). pp. 673-689. ISSN 0749-6036. doi:10.1006/spmi.1997.0561.

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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 the thermal 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.

Item Type:Article
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Roukes, M. L.0000-0002-2916-6026
Additional Information:© 1998 Academic Press Limited. Received 21 November 1997, Available online 25 May 2002. The authors would like to acknowledge John Worlock and Ron Lifshitz for illuminating discussions. MLR acknowledges partial support for this work from NSF grant DMR-9705411. The work of DEA was supported by the SURF 1997 program at Caltech.
Funding AgencyGrant Number
Caltech Summer Undergraduate Research Fellowship (SURF)UNSPECIFIED
Subject Keywords:mesoscopic systems, thermal conductivity, nanostructures
Issue or Number:3-4
Record Number:CaltechAUTHORS:20190628-091042894
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Official Citation:D.E. Angelescu, M.C. Cross, M.L. Roukes, Heat transport in mesoscopic systems, Superlattices and Microstructures, Volume 23, Issues 3–4, 1998, Pages 673-689, ISSN 0749-6036, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96813
Deposited By: Tony Diaz
Deposited On:28 Jun 2019 16:47
Last Modified:16 Nov 2021 17:23

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