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Changpeng Lin

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Articles

First-principles phonon physics using the Pheasy code

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By Changpeng Lin, Jian Han, Ben Xu, Nicola Marzari
| Nature Verified
Abstract Parameter-free calculations of lattice dynamics from first principles have achieved significant progress in the past decades, with a wealth of applications in thermodynamics, phase transitions, and transport properties of materials.
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Approaching lower bound of lattice thermal conductivity by simultaneously suppressing diagonal and off-diagonal phonon contributions - npj Computational Materials

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By Alejandro Rodríguez Verified, Riccardo Rurali, Changpeng Lin, Joshua Ojih, Mohammed Al-Fahdi, G. Snyder, Ming Hu
| Nature Verified
Abstract Pushing the intrinsic lattice thermal conductivity (LTC) in crystalline materials to lower bounds is crucial for fundamental materials research towards emerging technologies including thermoelectric energy conversion and thermal management in both hypersonic aircraft and next-generation turbine systems.
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Carrier-phonon decoupling in perovskite thermoelectrics via entropy engineering - Nature Communications

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By Yunpeng Zheng, Qinghua Zhang, Zhifang Zhou, YuJun Zhang, Changpeng Lin, Weigang Ma, Qian Li, Bin Wei, Jin-Le Lan, Di Yi, Xing Zhang, Lin Gu, Ce-Wen Nan
| Nature Verified
Abstract Thermoelectrics converting heat and electricity directly attract broad attentions. To enhance the thermoelectric figure of merit, zT, one of the key points is to decouple the carrier-phonon transport. Here, we propose an entropy engineering strategy to realize the carrier-phonon decoupling in the typical SrTiO3-based perovskite thermoelectrics. By high-entropy design, the lattice thermal conductivity could be reduced nearly to the amorphous limit, 1.25 W m−1 K−1.
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