12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Phonon-mediated thermal conductance of mesoscop...
View graph of relations

« Back

Phonon-mediated thermal conductance of mesoscopic wires with rough edges

Research output: Contribution to journalJournal article

Published

Journal publication date15/12/1999
JournalPhysical Review B
Journal number23
Volume60
Number of pages4
Pages15593-15596
Original languageEnglish

Abstract

We present an analysis of acoustic-phonon propagation through long, free-standing, insulating wires with rough surfaces. Owing to a crossover from ballistic propagation of the lowest-frequency phonon mode at omega < omega(1) = pi c/W to a diffusive (or even localized) behavior upon;the increase of phonon frequency, followed by reentrance into the quasiballistic regime, the heat conductance:of a wire acquires an intermediate tendency to saturate within the temperature range T similar to (h) over bar omega(1)/k(B). [S0163- 1829(99)02543-6].