Abstract

The discovery of extreme magnetoresistance (MR) in nonmagnetic materials attracted attention to WTe₂ semimetal. We studied MR in a single crystal of tungsten ditelluride in the range of magnetic fields up to 14 T. MR increased with increasing field following a close-to-quadratic law without saturation. The Shubnikov–de Haas oscillations were observed. Four fundamental frequencies were found in the oscillation spectrum, which correspond to two electron and two hole pockets, caused by strong spin–orbit coupling.

中文翻译：

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WTe2 半金属中的磁阻和量子振荡

摘要

非磁性材料中极端磁阻（MR）的发现引起了人们对WTe ₂半金属的关注。我们在高达 14 T 的磁场范围内研究了二碲化钨单晶中的 MR。MR 随着磁场的增加而增加，遵循接近二次定律而没有饱和。观察到 Shubnikov-de Haas 振荡。在振荡光谱中发现了四个基本频率，它们对应于两个电子和两个空穴口袋，这是由强自旋轨道耦合引起的。