Giant spin rotation under quasiparticle-photoelectron conversion: Joint effect of sublattice interference and spin-orbit coupling

Article

关键词: POLARIZED LIGHT;    DIRAC FERMIONS;    BRILLOUIN-ZONE;    GRAPHENE;    GRAPHITE;    PHOTOEMISSION;   

DOI  :  10.1103/PhysRevB.80.241409

来源: SCIE

【 摘 要 】

Spin- and angular-resolved photoemission spectroscopy is a basic experimental tool for unveiling spin polarization of electron eigenstates in crystals. We prove, by using spin-orbit coupled graphene as a model, that photoconversion of a quasiparticle inside a crystal into a photoelectron can be accompanied with a dramatic change in its spin polarization, up to a total spin flip. This phenomenon is typical of quasiparticles residing away from the Brillouin-zone center and described by higher rank spinors and results in exotic patterns in the angular distribution of photoelectrons.

【 授权许可】

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