Cited by 417Thermal properties of materialsThermography and Photoacoustic TechniquesThermal Radiation and Cooling Technologies

Thermal conductance of metal-metal interfaces

Gundrum, Bryan C., Cahill, David G., Averback, Robert S.·2005·Physical Review B

Abstract

The thermal conductance of interfaces between Al and Cu is measured in the temperature range $78<T<298\phantom{\rule{0.3em}{0ex}}\mathrm{K}$ using time-domain thermoreflectance. The samples are prepared by magnetron sputter deposition of a $100\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$ thick film of Al on top of layers of Cu on sapphire substrates. The chemical abruptness of the Al-Cu interface is systematically varied by ion-beam mixing using $1\phantom{\rule{0.3em}{0ex}}\mathrm{MeV}$ Kr ions. The thermal conductance of the as-deposited Al-Cu interface is $4\phantom{\rule{0.3em}{0ex}}\mathrm{GW}\phantom{\rule{0.2em}{0ex}}{\mathrm{m}}^{\ensuremath{-}2}\phantom{\rule{0.2em}{0ex}}{\mathrm{K}}^{\ensuremath{-}1}$ at room temperature, an order-of-magnitude larger than the phonon-mediated thermal conductance of typical metal-dielectric interfaces. The magnitude and the linear temperature dependence of the conductance are described well by a diffuse-mismatch model for electron transport at interfaces.

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Crossref · 10.1103/physrevb.72.245426

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Authors
Gundrum, B. C., Cahill, D. G., & Averback, R. S.
Affiliations
University of Illinois Urbana-Champaign (US)
Venue
Physical Review B
Published
2005-12-30
Volume
72
Issue
24
ISSN
  • 1098-0121 (ISSN-L)
  • 1550-235X
OpenAlex
W2053027007
Cited by
417
References
31
Citations by year
2026: 15 · 2025: 28 · 2024: 22 · 2023: 19 · 2022: 30 · 2021: 26 · 2020: 31 · 2019: 34 · 2018: 27 · 2017: 26 · 2016: 17 · 2015: 28 · 2014: 18 · 2013: 18 · 2012: 17
FWCI
2.85
Type
journal article
Language
en
Open access
closed
Locations
Physical Review B (publishedVersion)
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › Thermal properties of materials
  • Physical Sciences › Engineering › Mechanics of Materials › Thermography and Photoacoustic Techniques
  • Physical Sciences › Engineering › Civil and Structural Engineering › Thermal Radiation and Cooling Technologies
Keywords
thermal conductance, metal-metal interfaces, Cu/Al interface, time-domain thermoreflectance, ion beam mixing, diffuse mismatch model, low-temperature thermal transport, metal-dielectric interface, sapphire substrate

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