Erjian Cheng on Muck Rack

Erjian Cheng

As seen in: Nature
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Articles

Interwoven magnetic kagome metal overcomes geometric frustration - Nature Materials

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By Erjian Cheng, Hengxin Tan, Di Wu, Shuaishuai Sun, Tianping Ying, Yiwei Li, Walter Schnelle, Xingjiang Zhou, Yulin Chen, Binghai Yan, Yi-Feng Yang, Weida Wu, Zhongkai Liu
| Nature Verified
Abstract Magnetic kagome materials provide a platform for exploring magneto-transport phenomena, symmetry breaking and charge ordering driven by the intricate interplay among electronic structure, topology and magnetism. Yet geometric frustration in conventional kagome magnets limits their tunability. Here we propose a design strategy for interweaving quasi-one-dimensional magnetic Tb zigzag chains with non-magnetic Ti-based kagome bilayers in TbTi3Bi4.
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Tunable positions of Weyl nodes via magnetism and pressure in the ferromagnetic Weyl semimetal CeAlSi - Nature Communications

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By Rui Lou, Alexander Fedorov, Pengtao Yang, Bosen Wang, Yang Xu, Weiwei Zhao, Ulrich Burkhardt, Yanfeng Guo, Shiyan Li, Wenge Yang, Erjian Cheng, Jin-Guang Cheng, Darren C. Peets
| Nature Verified
Abstract The noncentrosymmetric ferromagnetic Weyl semimetal CeAlSi with simultaneous space-inversion and time-reversal symmetry breaking provides a unique platform for exploring novel topological states. Here, by employing multiple experimental techniques, we demonstrate that ferromagnetism and pressure can serve as efficient parameters to tune the positions of Weyl nodes in CeAlSi. At ambient pressure, a magnetism-facilitated anomalous Hall/Nernst effect (AHE/ANE) is uncovered.
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