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Size-dependent thermal conductivity of individual single-crystalline PbTe nanowires

Authors
Roh, Jong WookJang, So YoungKang, JoohoonLee, SeunghyunNoh, Jin-SeoKim, WoochulPark, JeungheeLee, Wooyoung
Issue Date
8-3월-2010
Publisher
AMER INST PHYSICS
Citation
APPLIED PHYSICS LETTERS, v.96, no.10
Indexed
SCIE
SCOPUS
Journal Title
APPLIED PHYSICS LETTERS
Volume
96
Number
10
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/116816
DOI
10.1063/1.3352049
ISSN
0003-6951
Abstract
We investigated the thermal conductivity of individual single-crystalline PbTe nanowires grown by a chemical vapor transport method. Thermal conductivities of PbTe nanowires 182-436 nm in diameter were measured using suspended microdevices. The thermal conductivity of a PbTe nanowire appeared to decrease with decreasing nanowire diameter and was measured to be 1.29 W/mK for a 182 nm nanowire at 300 K, which is about half of that of bulk PbTe. Our results indicate that phonon transport through a PbTe nanowire is effectively suppressed by the enhanced phonon boundary scattering due to size effects. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3352049]
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