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Title: Thermal conductance of metal–diamond interfaces at high pressure

Abstract

The thermal conductance of interfaces between metals and diamond, which has a comparatively high Debye temperature, is often greater than can be accounted for by two phonon-processes. The high pressures achievable in a diamond anvil cell can significantly extend the metal phonon density of states to higher frequencies, and can also suppress extrinsic effects by greatly stiffening interface bonding. Here we report time-domain thermoreflectance measurements of metal-diamond interface thermal conductance up to 50 GPa in the DAC for Pb, Au 0.95Pd 0.05, Pt, and Al films deposited on Type 1A natural [100] and Type 2A synthetic [110] diamond anvils. In all cases, the thermal conductances increase weakly or saturate to similar values at high pressure. Lastly, our results suggest that anharmonic conductance at metal-diamond interfaces is controlled by partial transmission processes, where a diamond phonon that inelastically scatters at the interface absorbs or emits a metal phonon.

Authors:
 [1];  [1];  [1]
  1. Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)
Publication Date:
Research Org.:
Carnegie Institution of Washington, Washington, D.C. (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1335887
Grant/Contract Number:
NA0002006
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 6; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Hohensee, Gregory T., Wilson, R. B., and Cahill, David G. Thermal conductance of metal–diamond interfaces at high pressure. United States: N. p., 2015. Web. doi:10.1038/ncomms7578.
Hohensee, Gregory T., Wilson, R. B., & Cahill, David G. Thermal conductance of metal–diamond interfaces at high pressure. United States. doi:10.1038/ncomms7578.
Hohensee, Gregory T., Wilson, R. B., and Cahill, David G. Fri . "Thermal conductance of metal–diamond interfaces at high pressure". United States. doi:10.1038/ncomms7578. https://www.osti.gov/servlets/purl/1335887.
@article{osti_1335887,
title = {Thermal conductance of metal–diamond interfaces at high pressure},
author = {Hohensee, Gregory T. and Wilson, R. B. and Cahill, David G.},
abstractNote = {The thermal conductance of interfaces between metals and diamond, which has a comparatively high Debye temperature, is often greater than can be accounted for by two phonon-processes. The high pressures achievable in a diamond anvil cell can significantly extend the metal phonon density of states to higher frequencies, and can also suppress extrinsic effects by greatly stiffening interface bonding. Here we report time-domain thermoreflectance measurements of metal-diamond interface thermal conductance up to 50 GPa in the DAC for Pb, Au0.95Pd0.05, Pt, and Al films deposited on Type 1A natural [100] and Type 2A synthetic [110] diamond anvils. In all cases, the thermal conductances increase weakly or saturate to similar values at high pressure. Lastly, our results suggest that anharmonic conductance at metal-diamond interfaces is controlled by partial transmission processes, where a diamond phonon that inelastically scatters at the interface absorbs or emits a metal phonon.},
doi = {10.1038/ncomms7578},
journal = {Nature Communications},
number = ,
volume = 6,
place = {United States},
year = {Fri Mar 06 00:00:00 EST 2015},
month = {Fri Mar 06 00:00:00 EST 2015}
}

Journal Article:
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Cited by: 26 works
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