Novel insights into lattice thermal transport in nanocrystalline Mg<sub>3</sub>Sb<sub>2</sub> from first principles: the crucial role of higher-order phonon scattering
Zheng Chang, Jiongzhi Zheng, Yuhang Jing, Weiqi Li, Kunpeng Yuan, Jing Ma, Yufei Gao, Xiaoliang Zhang, Ming Hu, Jianqun Yang, Dawei Tang
Abstract
Herein, we found that four-phonon interaction plays a crucial role in the ultra-low lattice thermal conductivity system, which goes beyond the conventional theory.
Topics & Concepts
PhononNanocrystalline materialCondensed matter physicsScatteringLattice (music)Chemical physicsThermalMaterials sciencePhonon scatteringNanocrystalOrder (exchange)CrystallographyNanotechnologyChemistryPhysicsThermodynamicsQuantum mechanicsFinanceAcousticsEconomicsAdvanced Thermoelectric Materials and DevicesThermal properties of materialsThermal Radiation and Cooling Technologies