Thermal conductivity of lead telluride with embedded nanoinclusions was studied using Monte Carlo simulations with intrinsic phonon transport properties obtained from first-principles-based lattice dynamics. The nanoinclusion/matrix interfaces were set to completely reflect phonons to model the maximum interface-phonon-scattering scenario. The simulations with the geometrical cross section and volume fraction of the nanoinclusions matched to those of the experiment show that the experiment has already reached the theoretical limit of thermal conductivity. The frequency-dependent analysis further identifies that the thermal conductivity reduction is dominantly attributed to scattering of low frequency phonons and demonstrates mutual adaptability of nanostructuring and local disordering.
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13 January 2014
Research Article|
January 16 2014
Thermal conductivity of bulk nanostructured lead telluride
Takuma Hori;
Takuma Hori
1
Department of Mechanical Engineering, The University of Tokyo
, Bunkyo, Tokyo 113-8656, Japan
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Gang Chen;
Gang Chen
2
Department of Mechanical Engineering, Massachusetts Institute of Technology
, Cambridge, Massachusetts 02139, USA
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Junichiro Shiomi
Junichiro Shiomi
a)
1
Department of Mechanical Engineering, The University of Tokyo
, Bunkyo, Tokyo 113-8656, Japan
3
PRESTO, Japan Science and Technology Agency
, Kawaguchi, Saitama 332-0012, Japan
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a)
Author to whom correspondence should be addressed. Electronic mail: shiomi@photon.t.u-tokyo.ac.jp.
Appl. Phys. Lett. 104, 021915 (2014)
Article history
Received:
November 13 2013
Accepted:
January 02 2014
Citation
Takuma Hori, Gang Chen, Junichiro Shiomi; Thermal conductivity of bulk nanostructured lead telluride. Appl. Phys. Lett. 13 January 2014; 104 (2): 021915. https://doi.org/10.1063/1.4862323
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