4 papers
Ineffectiveness of Formamidine in Suppressing Ultralow Thermal Conductivity in Cubic Hybrid Perovskite FAPbI3
Jiongzhi Zheng, Zheng Chang, Changpeng Lin +5
Fundamentally understanding the lattice dynamics and microscopic mechanisms of thermal transport in cubic hybrid organic-inorganic perovskites remains elusive, primarily due to the…
Microscopic dynamics of collective acoustic excitations in simple liquids
Yixin Xu, Xing Xiang, Zhigang Li +1
In this letter, we systematically investigate the microscopic dynamics of collective vibrational excitations in simple liquids. The thermodynamic states of simple liquids are unifi…
Tuning the thermal conductivity of Si membrane using nanopillars: from crystalline to amorphous pillars
Lina Yang, Yixin Xu, Xianheng Wang +1
Tuning thermal transport in nanostructures is essential for many applications, such as thermal management and thermoelectrics. Nanophononic metamaterials (NPM) have shown great pot…
Observation of Extraordinary Vibration Scatterings Induced by Strong Anharmonicity in Lead-Free Halide Double Perovskites
Guang Wang, Jiongzhi Zheng, Jie Xue +5
Lead-free halide double perovskites provide a promising solution for the long-standing issues of lead-containing halide perovskites, i.e., the toxicity of Pb and the low stability…