Cited by 96Thermal properties of materialsThermography and Photoacoustic TechniquesThermal Radiation and Cooling Technologies

Anisotropy of the Thermal Conductivity in GaAs/AlAs Superlattices

Luckyanova, Maria N., Johnson, Jeremy A., Maznev, A. A., Garg, Jivtesh, Jandl, Adam, Bulsara, Mayank T., Fitzgerald, Eugene A., Nelson, Keith A. +1 more·2013·Nano Letters

Abstract

We combine the transient thermal grating and time-domain thermoreflectance techniques to characterize the anisotropic thermal conductivities of GaAs/AlAs superlattices from the same wafer. The transient grating technique is sensitive only to the in-plane thermal conductivity, while time-domain thermoreflectance is sensitive to the thermal conductivity in the cross-plane direction, making them a powerful combination to address the challenges associated with characterizing anisotropic heat conduction in thin films. We compare the experimental results from the GaAs/AlAs superlattices with first-principles calculations and previous measurements of Si/Ge SLs. The measured anisotropy is smaller than that of Si/Ge SLs, consistent with both the mass-mismatch picture of interface scattering and with the results of calculations from density-functional perturbation theory with interface mixing included.

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Crossref · 10.1021/nl4001162

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Authors
Luckyanova, M. N., Johnson, J. A., Maznev, A. A., Garg, J., Jandl, A., Bulsara, M. T., Fitzgerald, E. A., Nelson, K. A., & Chen, G.
Affiliations
Massachusetts Institute of Technology (US)
Corresponding author
Chen, Gang
Venue
Nano Letters
Published
2013-08-20
Volume
13
Issue
9
Pages
3973-3977
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
OpenAlex
W2320090656
Cited by
96
References
44
Citations by year
2026: 5 · 2025: 8 · 2024: 6 · 2023: 7 · 2022: 5 · 2021: 12 · 2020: 6 · 2019: 6 · 2018: 17 · 2017: 10 · 2016: 7 · 2015: 6 · 2014: 1
FWCI
2.11
Type
journal article
Language
en
Open access
closed
Locations
  • Nano Letters (publishedVersion)
  • PubMed (publishedVersion)
Funders
U.S. Department of Energy (DESC0001299)
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
anisotropic thermal conductivity, GaAs/AlAs superlattices, transient thermal grating, time-domain thermoreflectance, in-plane thermal conductivity, through-plane thermal conductivity, interface scattering, mass mismatch, density functional perturbation theory, Si/Ge superlattices
MeSH terms
Arsenicals, Gallium, Hot Temperature, Molecular Weight, Silicon, Thermal Conductivity, Anisotropy, Nanostructures

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