Giant spin rotation under quasiparticle-photoelectron conversion: Joint effect of sublattice interference and spin-orbit coupling
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CitationKuemmeth, Ferdinand, and Emmanuel I. Rashba. 2009. “Giant Spin Rotation Under Quasiparticle-Photoelectron Conversion: Joint Effect of Sublattice Interference and Spin-Orbit Coupling.” Physical Review B 80 (24) (December 16). doi:10.1103/physrevb.80.241409.
AbstractSpin- 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.
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