物理
拓扑绝缘体
自旋电子学
自旋(空气动力学)
纹理(宇宙学)
凝聚态物理
拓扑(电路)
量子力学
铁磁性
数学
组合数学
人工智能
计算机科学
图像(数学)
热力学
作者
Haijun Zhang,Chao‐Xing Liu,Shou-Cheng Zhang
标识
DOI:10.1103/physrevlett.111.066801
摘要
For three-dimensional topological insulators in the Bi2Se3 family, topological surface states with p(z) orbitals have a left-handed spin texture for the upper Dirac cone and a right-handed spin texture for the lower Dirac cone. In this work, we predict a new form of the spin-orbital texture associated with the p(x) and p(y) orbitals. For the upper Dirac cone, a left-handed (right-handed) spin texture is coupled to the "radial" ("tangential") orbital texture, whereas for the lower Dirac cone, the coupling of spin and orbital textures is the exact opposite. The "tangential" ("radial") orbital texture is dominant for the upper (lower) Dirac cone, leading to the right-handed spin texture for the in-plane orbitals of both the upper and lower Dirac cones. A spin-resolved and photon polarized angle-resolved photoemission spectroscopy experiment is proposed to observe this novel spin-orbital texture.
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