Published March 1998
| public
Journal Article
Heat transport in mesoscopic systems
- Creators
- Angelescu, D. E.
- Cross, M
- Roukes, M. L.
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 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.
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.Additional details
- Eprint ID
- 96813
- DOI
- 10.1006/spmi.1997.0561
- Resolver ID
- CaltechAUTHORS:20190628-091042894
- DMR-9705411
- NSF
- Caltech Summer Undergraduate Research Fellowship (SURF)
- Created
-
2019-06-28Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field