Volume 87, Number 3, August 2009
Article Number 37003
Number of page(s) 6
Section Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
Published online 28 August 2009
EPL, 87 (2009) 37003
DOI: 10.1209/0295-5075/87/37003

Origin and manipulation of the Rashba splitting in surface alloys

H. Bentmann1, F. Forster1, G. Bihlmayer2, E. V. Chulkov3, 4, L. Moreschini5, M. Grioni5 and F. Reinert1, 6

1   Experimentelle Physik II, Universität Würzburg Am Hubland - D-97074 Würzburg, Germany, EU
2   Institut für Festkörperforschung, Forschungszentrum Jülich - D-52425 Jülich, Germany, EU
3   Donostia International Physics Center - 20018 San Sebastián/Donostia, Basque Country, Spain, EU
4   Departamento de Física de Materiales and Centro Mixto CSIC-UPV/EHU, UPV/EHU Apdo. 1072, 20080 San Sebastián/Donostia, Basque Country, Spain, EU
5   Ecole Polytechnique Fédérale de Lausanne (EPFL), Institut de Physique des Nanostructures CH-1015 Lausanne, Switzerland
6   Forschungszentrum Karlsruhe, Gemeinschaftslabor für Nanoanalytik - D-76021 Karlsruhe, Germany, EU

received 24 May 2009; accepted in final form 23 July 2009; published August 2009
published online 28 August 2009

A novel method is demonstrated to tailor the electronic structure of high-Z surface alloys showing a giant Rashba splitting by means of electron doping. This aims for new model systems to study unconvential spin topologies and for possible applications in the field of spintronics. We give new insights into the origin of the enhanced Rashba effect in the two specific alloys Bi/Cu(111) and Bi/Ag(111) employing angle-resolved photoelectron spectroscopy and first-principles calculations.

73.20.-r - Electron states at surfaces and interfaces.
71.15.Mb - Density functional theory, local density approximation, gradient and other corrections.
79.60.-i - Photoemission and photoelectron spectra.

© EPLA 2009