Thermal Conductivity of BAs under Pressure

Hou, Songrui1; Sun, Bo2; Tian, Fei3,4,5; Cai, Qingan6; Xu, Youming7; Wang, Shanmin8; Chen, Xi7; Ren, Zhifeng4,5; Li, Chen1,6; Wilson, Richard B.1,6

2022-07-01

10.1002/aelm.202200017

Advanced Electronic Materials   影响因子和分区

2199-160X

The thermal conductivity of boron arsenide (BAs) is believed to be influenced by phonon scattering selection rules due to its special phonon dispersion. Compression of BAs leads to significant changes in phonon dispersion, which allows for a test of first principles theories for how phonon dispersion affects three- and four-phonon scattering rates. This study reports the thermal conductivity of BAs from 0 to 30 GPa. Thermal conductivity vs. pressure of BAs is measured by time-domain thermoreflectance with a diamond anvil cell. In stark contrast to what is typical for nonmetallic crystals, BAs is observed to have a pressure independent thermal conductivity below 30 GPa. The thermal conductivity of nonmetallic crystals typically increases upon compression. The unusual pressure independence of BAs's thermal conductivity shows the important relationship between phonon dispersion properties and three- and four-phonon scattering rates.

boron arsenide thermal conductivity high pressure phonon dispersion phonon scattering selection rules

SCI ; EI

英语

其他

ULTRA, an Energy Frontier Research Center - U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES)[DE-SC0021230] ; National Science Foundation (NSF)["1847632","1750786"] ; Office of Naval Research (ONR) under MURI Award[N00014-16-1-2436]

Science & Technology - Other Topics ; Materials Science ; Physics

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000828604400001

WILEY

20223012397734

Acoustic dispersion ; Arsenic compounds ; Boron ; Crystals ; III-V semiconductors ; Phonon scattering ; Thermal conductivity

Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Thermodynamics:641.1 ; Semiconducting Materials:712.1 ; Acoustic Properties of Materials:751.2 ; Crystalline Solids:933.1

Web of Science

1.Univ Calif Riverside, Mat Sci & Engn, Riverside, CA 92521 USA
2.Tsinghua Univ, Tsinghua Shenzhen Int Grad Sch, Shenzhen 518055, Guangdong, Peoples R China
3.Sun Yat Sen Univ, Sch Mat Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China
4.Univ Houston, Dept Phys, Houston, TX 77204 USA
5.Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA
6.Univ Calif Riverside, Dept Mech Engn, Riverside, CA 92521 USA
7.Univ Calif Riverside, Dept Elect & Comp Engn, Riverside, CA 92521 USA
8.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Guangdong, Peoples R China

Hou, Songrui,Sun, Bo,Tian, Fei,et al. Thermal Conductivity of BAs under Pressure[J]. Advanced Electronic Materials,2022.

Hou, Songrui.,Sun, Bo.,Tian, Fei.,Cai, Qingan.,Xu, Youming.,...&Wilson, Richard B..(2022).Thermal Conductivity of BAs under Pressure.Advanced Electronic Materials.

Hou, Songrui,et al."Thermal Conductivity of BAs under Pressure".Advanced Electronic Materials (2022).