Spin texture in type-II Weyl semimetal WTe2

Spin texture in type-II Weyl semimetal WTe2
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II 型 Weyl 半金属 WTe2 中的自旋织构

DOI:
10.1103/physrevb.94.195134
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发表时间:
2016-11-18
期刊:
影响因子:
3.7
通讯作者:
Matsuda, Iwao
Matsuda, Iwao
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Feng, Baojie;Chan, Yang-Hao;Matsuda, Iwao

文献摘要

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我们用自旋和角度分辨光电子能谱(SARPES)确定了WTe2的能带结构和自旋织构。在第一性原理计算的支持下,我们揭示了费米弧表面态和体费米口袋的自旋极化的存在。我们的结果支持WTe2是第二类Weyl半金属的候选者,并为理解其超大的非饱和磁阻提供了重要的信息。
We determine the band structure and spin texture of WTe2 by spin-and angle-resolved photoemission spectroscopy (SARPES). With the support of first-principles calculations, we reveal the existence of spin polarization of both the Fermi arc surface states and bulk Fermi pockets. Our results support WTe2 to be a type-II Weyl semimetal candidate and provide important information to understand its extremely large and nonsaturating magnetoresistance.