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High Fermi velocities and small cyclotron masses in LaAlGe

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arxiv 2012.05234 v1 pith:HJYB3FXE submitted 2020-12-09 cond-mat.mes-hall cond-mat.mtrl-sci

Zhixiang Hu , Qianheng Du , Yu Liu , D. Graf , C. Petrovic This is my paper · ORCID
classification cond-mat.mes-hallcond-mat.mtrl-sci
keywords fermihighlaalgemassessmallsurfacevelocitiesvery
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We report quantum oscillation measurements of LaAlGe, a Lorentz-violating type-II Weyl semimetal with tilted Weyl cones. Very small quasiparticle masses and very high Fermi velocities were detected at the Fermi surface. Whereas three main frequencies have been observed, angular dependence of two Fermi surface sheets indicates possible two-dimensional (2D) character despite the absence of the 2D structural features such as van der Waals bonds. Such conducting states may offer a good platform for low-dimensional polarized spin current in magnetic RAlGe (R = Ce, Pr) materials.

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