LaAlGe中的高费米速度和小回旋质量
High Fermi velocities and small cyclotron masses in LaAlGe
摘要：
我们报告量子振荡测量LaAlGe，洛伦兹违反II型外尔半金属倾斜外尔锥。在费米面上检测到非常小的准粒子质量和非常高的费米速度。虽然已经观察到三个主要的频率，两个费米表面片的角度依赖性表明可能的二维（2D）字符，尽管没有2D的结构特征，如范德华键。这种导电态可以为磁性RAlGe（R = Ce，Pr）材料中的低维极化自旋电流提供一个很好的平台。
英文摘要：
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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