Spin-flip transitions and departure from the Rashba model in the Au(111) surface
نویسندگان
چکیده
Julen Ibañez-Azpiroz,1,2 Aitor Bergara,1,2,3 E. Ya. Sherman,4,5 and Asier Eiguren1,2 1Materia Kondentsatuaren Fisika Saila, Zientzia eta Teknologia Fakultatea, Euskal Herriko Unibertsitatea, 644 Postakutxatila, 48080 Bilbao, Basque Country, Spain 2Donostia International Physics Center (DIPC), Paseo Manuel de Lardizabal 4, 20018 Donostia/San Sebastian, Spain 3Centro de Fı́sica de Materiales CFM Materials Physics Center MPC, Centro Mixto CSIC-UPV/EHU, Edificio Korta, Avenida de Tolosa 72, 20018 Donostia, Basque Country, Spain 4Department of Physical Chemistry, University of Basque Country, UPV-EHU 48080 Bilbao, Bizkaia, Spain 5IKERBASQUE, Basque Foundation for Science, Bilbao, Spain (Received 28 June 2013; revised manuscript received 31 July 2013; published 3 September 2013; corrected 4 September 2013)
منابع مشابه
Spin-flip transitions induced by time-dependent electric fields in surfaces with strong spin-orbit interaction.
We present a comprehensive theoretical investigation of the light absorption rate at a Pb/Ge(111)-β√3 × √3R30° surface with strong spin-orbit coupling. Our calculations show that electron spin-flip transitions cause as much as 6% of the total light absorption, representing 1 order of magnitude enhancement over Rashba-like systems. Thus, we demonstrate that a substantial part of the light irradi...
متن کاملSpin-orbit splitting of image states
We quantify the effect of the spin-orbit interaction on the Rydberglike series of image state electrons at the (111) and (001) surface of Ir, Pt and Au. Using relativistic multiple-scattering methods we find Rashba-like dispersions with ∆E(K) = γK with values of γ for n = 1 states in the range 38 − 88 meV Å. Extending the phase-accumulation model to include spin-orbit scattering we find that th...
متن کاملSurface alloy engineering in 2D trigonal lattice: giant Rashba spin splitting and two large topological gaps
Wedemonstrate that sp based trigonal lattice can exhibit giant Rashba splitting and two large topological gaps simultaneously. First, an effective tight bindingmodel is developed to describe the Rashba spin–orbit coupling (SOC) on a real surface and give a topological phase diagrambased on two independent SOCparameters. Second, based on density functional theory calculations, it is proposed tha...
متن کاملRashba splitting of graphene-covered Au(111) revealed by quasiparticle interference mapping
We report on low-temperature scanning tunneling spectroscopy measurements on epitaxial graphene flakes on Au(111). We show that using quasiparticle interference (QPI) mapping, we can discriminate between the electronic systems of graphene and Au(111). Beyond the scattering vectors, which can be ascribed to the elastic scattering within each of the systems, we observe QPI features related to the...
متن کاملAssessment of the Characteristics of MRI Coils in Terms of RF Non-Homogeneity Using Routine Spin Echo Sequences
Introduction: One of the major causes of image non-uniformity in MRI is due to the existence of non-homogeneity in RF receive and transmit. This can be the most effective source of error in quantitative studies in MRI imaging. Part of this non-homogeneity demonstrates the characteristics of RF coil and part of it is due to the interaction of RF field with the material being imaged...
متن کامل