Rashba effect at the surfaces of rare-earth metals and their monoxides

Krupin, O.; Starke, K.; Bihlmayer, G.; Blügel, S.; Döbrich, K.; Prieto, J. E.; Kaindl, G.; Kevan, S.; Gorovikov, S.

doi:10.1088/1367-2630/11/1/013035

Journal Article

Rashba effect at the surfaces of rare-earth metals and their monoxides

Krupin, O. ; Bihlmayer, G.FZJ* ; Döbrich, K. ; Prieto, J. E. ; Starke, K. ; Gorovikov, S. ; Blügel, S.FZJ* ; Kevan, S. ; Kaindl, G.

2009
Dt. Physikalische Ges. [Bad Honnef]

New journal of physics 11, 013035 (2009) [10.1088/1367-2630/11/1/013035]

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Please use a persistent id in citations: http://hdl.handle.net/2128/28979 doi:10.1088/1367-2630/11/1/013035

Abstract: We present a systematic study of the Rashba-type spin-orbit interaction at the (0001) surfaces of rare-earth metals and their surface monoxides, specifically of Tb metal and the O/Tb, O/Lu and O/Y surfaces. By means of photoemission experiments and ab initio band-structure calculations, we uncover the influence of this interaction on the surface electronic structure. In turn, the dramatic impact of the charge-density distribution of the surface/interface states on the strength of the Rashba-type spin splitting is demonstrated. We discuss the Rashba effect at magnetic and non-magnetic rare-earth surfaces, and compare with cases where it is negligible. The difference between the Rashba effect and magnetic linear dichroism in photoemission is pointed out to help avoid possible confusion in connection with the simultaneous appearance of these two effects at a magnetic surface.

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Classification:

Physics, Multidisciplinary

Note: Financial support through Deutsche Forschungsgemeinschaft, projects STA 413/3-1, BI 823-1/1 and SfB-290) TP6, is gratefully acknowledged. This work was also supported by the US DOE under grant DE-FG02-04ER46158. The Advanced Light Source is operated under US DOE contract DE-AC03-76SF00098 at Lawrence Berkeley National Laboratory. JEP acknowledges financial support by the A-v Humboldt foundation and by the MEC program 'Ramon y Cajal'. We gratefully acknowledge Christian Schubler-Langeheine for designing and setting up the photoemission endstation used during the experiments at BessyII.

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