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| Hauptseite > Publikationsdatenbank > Designing the Rashba spin texture by adsorption of inorganic molecules |
| Hauptseite > Publikationsdatenbank > Designing the Rashba spin texture by adsorption of inorganic molecules |
| Journal Article | FZJ-2017-02310 |
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2017
Dt. Physikalische Ges.
[Bad Honnef]
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Please use a persistent id in citations: http://hdl.handle.net/2128/14316 doi:10.1088/1367-2630/aa64a1
Abstract: Using the physisorption and chemisorption of inorganic molecules on BiAg$_2$/Ag(111) we demonstrate from first principles that the spin-orbit splitting and the spin direction of surface Rashba-split states can be manipulated selectively. Although NH$_3$ is physisorbed, it nevertheless leads to a slight enhancement of the outward buckling of the surface Bi that increases the magnitude of the Rashba splitting. On the other hand, the weakly chemisorbed BH$_3$ determines a strong inward relaxation of the surface Bi such that the occupied Rashba state shifts into Ag bulk states while a new unoccupied one is induced. Importantly, for the BH$_3$--BiAg$_2$/Ag(111) system the size of the out-of-plane spin polarization is significantly larger than the in-plane one at variance with the clean surface case.
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