Non-monotonic pressure dependence of the thermal conductivity of boron arsenide
- Boston College, Chestnut Hill, MA (United States)
Recent experiments demonstrate that boron arsenide (BAs) is a showcase material to study the role of higher-order four-phonon interactions in affecting heat conduction in semiconductors. Here we use first-principles calculations to identify a phenomenon in BAs and a related material - boron antimonide, that has never been predicted or experimentally observed for any other material: competing responses of three-phonon and four-phonon interactions to pressure rise cause a non-monotonic pressure dependence of thermal conductivity, κ, which first increases similar to most materials and then decreases. The resulting peak in κ shows a strong temperature dependence from rapid strengthening of four-phonon interactions relative to three-phonon processes with temperature. Our results reveal pressure as a knob to tune the interplay between the competing phonon scattering mechanisms in BAs and similar compounds, and provide clear experimental guidelines for observation in a readily accessible measurement regime.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Science Foundation (NSF)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1543755
- Journal Information:
- Nature Communications, Vol. 10, Issue 1; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Phonon energy dissipation in friction between graphene/graphene interface
|
journal | January 2020 |
Stronger role of four-phonon scattering than three-phonon scattering in thermal conductivity of III-V semiconductors at room temperature
|
journal | December 2019 |
Ultrahigh thermal conductivity in isotope-enriched cubic boron nitride
|
journal | January 2020 |
First Principles Investigation of Anomalous Pressure-Dependent Thermal Conductivity of Chalcopyrites
|
journal | October 2019 |
Similar Records
Thermal and thermoelectric transport measurements of an individual boron arsenide microstructure
Thermal and thermoelectric transport measurements of an individual boron arsenide microstructure