Rashba spin splitting of L-gap surface states on Ag(111) and Cu(111)

Abstract

Spin-resolved band structures of L-gap surface states on Ag(111) and Cu(111) are investigated by spin- and angle-resolved photoelectron spectroscopy (SARPES) with a vacuum-ultra-violet laser. The observed spin textures of the Ag(111) and Cu(111) surface states agree with that expected by the conventional Rashba effect. The Rashba parameter of the Ag(111) surface state is estimated quantitatively and is 80% of that of Cu(111). The surface-state wave function is found to be predominantly of even mirror-symmetry with negligible odd contribution by SARPES using a linearly polarized light. The results are consistent with our theoretical calculations for the orbital-resolved surface state.

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• Time-, spin-, and angle-resolved photoemission spectroscopy with a 1-MHz 10.7-eV pulse laser
• Visualization of spin-polarized electronic states by imaging-type spin-resolved photoemission microscopy
• A generic model with unconventional Rashba bands and giant spin galvanic effect
• Spectroscopic evidence for a new type of surface resonance at noble metal surfaces
• Visualization of optical polarization transfer to photoelectron spin vector emitted from the spin-orbit coupled surface state
• Scaling law for the Rashba-type spin splitting in quantum well films
• Orbital Hybridization Induces Giant Cubic Rashba Effect at Cu/WO${}_3$ Interface