Discovery of Lorentz-violating Weyl fermion semimetal state in LaAlGe materials
Su-Yang Xu, Nasser Alidoust, Guoqing Chang, Hong Lu, Bahadur Singh,, Ilya Belopolski, Daniel Sanchez, Xiao Zhang, Guang Bian, Hao Zheng,, Marius-Adrian Husanu, Yi Bian, Shin-Ming Huang, Chuang-Han Hsu, Tay-Rong, Chang, Horng-Tay Jeng, Arun Bansil, Vladimir N. Strocov, Hsin Lin
TL;DR
This paper reports the discovery of a Lorentz-violating Weyl fermion semimetal state in LaAlGe materials, combining theoretical predictions and experimental validation, establishing LaAlGe as a robust platform for studying type-II Weyl physics.
Contribution
It presents the first combined theoretical and experimental identification of a Lorentz-violating type-II Weyl semimetal in LaAlGe, expanding the materials available for Weyl physics research.
Findings
LaAlGe hosts a Lorentz-violating Weyl fermion semimetal state.
Experimental evidence confirms the theoretical predictions.
LaAlGe is a robust platform for studying type-II Weyl physics.
Abstract
We report theoretical and experimental discovery of Lorentz-violating Weyl fermion semimetal type-II state in the LaAlGe class of materials. Previously type-II Weyl state was predicted in WTe2 materials which remains unrealized in surface experiments. We show theoretically and experimentally that LaAlGe class of materials are the robust platforms for the study of type-II Weyl physics.
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Taxonomy
TopicsTopological Materials and Phenomena · Rare-earth and actinide compounds · Advanced Condensed Matter Physics