Unconventional Fermi surface spin textures in the Bi_xPb_{1-x}/Ag(111) surface alloy

Abstract

The Fermi and Rashba energies of surface states in the Bi_xPb_{1-x}/Ag(111) alloy can be tuned simultaneously by changing the composition parameter x. We report on unconventional Fermi surface spin textures observed by spin and angle-resolved photoemission spectroscopy {that are correlated with a topological transition of the Fermi surface occurring at x=0.5. We show that the surface states remain fully spin polarized upon alloying and that the spin polarization vectors are approximately tangential to the constant energy contours. We discuss the implications of the topological transition for the transport of spin.

5 pages, 5 figures

References in corpus (8)

• Universal Intrinsic Spin-Hall Effect
• Experimental observation of the spin-Hall effect in a two dimensional spin-orbit coupled semiconductor system
• Giant Spin-splitting in the Bi/Ag(111) Surface Alloy
• Rashba type spin-orbit splitting of quantum well states in ultrathin Pb films
• Topological Change of the Fermi Surface in Low Density Rashba Gases: Application to Superconductivity
• Fermi liquid parameters in 2D with spin-orbit interaction
• Electron-phonon effects on spin-orbit split bands of two dimensional systems
• Intrinsic spin-Hall accumulation in honeycomb lattices: Band structure effects

Cited by in corpus (18)

• Orbital-Angular-Momentum Based Origin of Rashba-Type Surface Band Splitting
• Detecting Chiral Orbital Angular Momentum by Circular Dichroism ARPES
• Observation of topological transition of Fermi surface from a spindle-torus to a torus in large bulk Rashba spin-split BiTeCl
• Spin and Orbital Angular Momentum Structures of Cu(111) and Au(111) Surface States
• Experimental observation of spin to charge current conversion at non-magnetic metal/Bi2O3 interfaces
• The Structural Influence on the Rashba-type Spin-Splitting in Surface Alloys
• Intrinsic instability of electronic interfaces with strong Rashba coupling
• Electronic Liquid Crystalline Phases in a Spin-Orbit Coupled Two-Dimensional Electron Gas
• Microscopic mechanism for asymmetric charge distribution in Rashba-type surface states and the origin of the the energy splitting scale
• Electrically Engineered Band Gap in Two-Dimensional Ge, Sn, and Pb: A First-Principles and Tight-Binding Approach
• Spin- and angle-resolved photoemission on topological materials
• Giant spin rotation under quasiparticle-photoelectron conversion: Joint effect of sublattice interference and spin-orbit coupling
• Theory of a chiral Fermi liquid: general formalism
• Structure and electronic properties of the ($\sqrt{3}\times \sqrt{3}$)$R30^{\circ }$ SnAu${}_2$/Au(111) surface alloy
• Interband spin-orbit coupling between anti-parallel spin states in Pb quantum well states
• Tuning the spin texture in binary and ternary surface alloys on Ag(111)
• Superconductivity in Two-Dimensional Systems with Unconventional Rashba Bands
• Atomic and mesoscopic structure of Dy-based surface alloys on noble metals