Volume 46, Issue 10 pp. 13687-13697
RESEARCH ARTICLE

Low lattice thermal conductivity of hydride-based cubic antiperovskites A3HB (a = Li, Na; B = S, se, Te) with higher-order anharmonicity correction

Yanan Xiao

Yanan Xiao

Department of Physics, Yantai University, Yantai, People's Republic of China

Search for more papers by this author
Pengfei Sui

Pengfei Sui

Department of Physics, Yantai University, Yantai, People's Republic of China

Search for more papers by this author
Yinchang Zhao

Yinchang Zhao

Department of Physics, Yantai University, Yantai, People's Republic of China

Search for more papers by this author
Jun Ni

Jun Ni

Department of Physics, Tsinghua University, Beijing, People's Republic of China

Search for more papers by this author
Sheng Meng

Sheng Meng

Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, People's Republic of China

Collaborative Innovation Center of Quantum Matter, Beijing, People's Republic of China

Search for more papers by this author
Zhenhong Dai

Corresponding Author

Zhenhong Dai

Department of Physics, Yantai University, Yantai, People's Republic of China

Correspondence

Zhenhong Dai, Department of Physics, Yantai University, Yantai 264005, People's Republic of China.

Email: [email protected]

Search for more papers by this author
First published: 18 May 2022
Citations: 13

Funding information: National Natural Science Foundation of China, Grant/Award Numbers: 11974302, 12174327

Summary

Quartic anharmonicity is of vital significance in accurately determining thermal conductivity (κL). Here, using first-principles calculation method combined with Boltzmann transport equation (BTE), compressive sensing techniques and self-consistent phonon (SCP) theory, we investigate the heat transport properties of five hydride-based cubic antiperovskites A3HB (A = Li, Na; B = S, Se, Te) with the inclusion of scattering rates and phonon frequency shifts induced by quartic anharmonicity, which do not contain orthorhombic Na3HS. It is worth noting that only the values of κL obtained by SCP theory are valid for Li3HS and Na3HS, because there is imaginary frequency in HA phonon mode, which makes the conventional calculation of BTE invalid. We also find that quartic anharmonicity is important to capture the reasonable temperature dependence of the κL, while only taking phonon frequency shifts (4 ph scattering processes) into account will result in weaker (stronger) temperature dependence. The calculated κL based SCP theory exhibits a remarkably low value at 300 K, which indicates that the cubic antiperovskites A3HB (A = Li, Na; B = S, Se, Te) are potential thermoelectric materials.

CONFLICT OF INTEREST

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.