A combined experimental and theoretical study of Rashba-split surface states on the Pb/Ag(111) surface
We report on a combined low-temperature scanning tunneling spectroscopy (STS), angle-resolved photoemission spectroscopy (ARPES), and density functional theory (DFT) investigation of the $(\sqrt{3}\times \sqrt{3})$ R 30°Pb/Ag(111) surface alloy which provides a giant Rashba-type spin splitting. With...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2014-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/16/4/045017 |
| _version_ | 1797751459396190208 |
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| author | L El-Kareh G Bihlmayer A Buchter H Bentmann S Blügel F Reinert M Bode |
| author_facet | L El-Kareh G Bihlmayer A Buchter H Bentmann S Blügel F Reinert M Bode |
| author_sort | L El-Kareh |
| collection | DOAJ |
| description | We report on a combined low-temperature scanning tunneling spectroscopy (STS), angle-resolved photoemission spectroscopy (ARPES), and density functional theory (DFT) investigation of the $(\sqrt{3}\times \sqrt{3})$ R 30°Pb/Ag(111) surface alloy which provides a giant Rashba-type spin splitting. With STS we observed spectroscopic features that are assigned to two hole-like Rashba-split bands in the unoccupied energy range. By means of STS and quantum interference mapping we determine the band onsets, splitting strengths, and dispersions for both bands. The unambiguous assignment of scattering vectors is achieved by comparison to ARPES measurements. While intra-band scattering is found for both Rashba bands, inter-band scattering is only observed in the occupied energy range. Spin- and orbitally-resolved band structures were obtained by DFT calculations. Considering the scattering between states of different spin- and orbital character, the apparent deviation between experimentally observed scattering events and the theoretically predicted spin polarization could be resolved. |
| first_indexed | 2024-03-12T16:48:53Z |
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| id | doaj.art-af7b5cc775a644f58e7155a512738124 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:48:53Z |
| publishDate | 2014-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-af7b5cc775a644f58e7155a5127381242023-08-08T11:25:53ZengIOP PublishingNew Journal of Physics1367-26302014-01-0116404501710.1088/1367-2630/16/4/045017A combined experimental and theoretical study of Rashba-split surface states on the Pb/Ag(111) surfaceL El-Kareh0G Bihlmayer1A Buchter2H Bentmann3S Blügel4F Reinert5M Bode6Physikalisches Institut, Experimentelle Physik II, Universität Würzburg , Am Hubland, D-97074 Würzburg, GermanyPeter Grünberg Institut and Institute of Advanced Simulation , Forschungszentrum Jülich and JARA, D-52425 Jülich, GermanyPhysikalisches Institut, Experimentelle Physik VII, Universität Würzburg , Am Hubland, D-97074 Würzburg, GermanyPhysikalisches Institut, Experimentelle Physik VII, Universität Würzburg , Am Hubland, D-97074 Würzburg, Germany; Karlsruhe Institute of Technology KIT , Gemeinschaftslabor für Nanoanalytik, D-76021 Karlsruhe, GermanyPeter Grünberg Institut and Institute of Advanced Simulation , Forschungszentrum Jülich and JARA, D-52425 Jülich, GermanyPhysikalisches Institut, Experimentelle Physik VII, Universität Würzburg , Am Hubland, D-97074 Würzburg, Germany; Karlsruhe Institute of Technology KIT , Gemeinschaftslabor für Nanoanalytik, D-76021 Karlsruhe, GermanyPhysikalisches Institut, Experimentelle Physik II, Universität Würzburg , Am Hubland, D-97074 Würzburg, GermanyWe report on a combined low-temperature scanning tunneling spectroscopy (STS), angle-resolved photoemission spectroscopy (ARPES), and density functional theory (DFT) investigation of the $(\sqrt{3}\times \sqrt{3})$ R 30°Pb/Ag(111) surface alloy which provides a giant Rashba-type spin splitting. With STS we observed spectroscopic features that are assigned to two hole-like Rashba-split bands in the unoccupied energy range. By means of STS and quantum interference mapping we determine the band onsets, splitting strengths, and dispersions for both bands. The unambiguous assignment of scattering vectors is achieved by comparison to ARPES measurements. While intra-band scattering is found for both Rashba bands, inter-band scattering is only observed in the occupied energy range. Spin- and orbitally-resolved band structures were obtained by DFT calculations. Considering the scattering between states of different spin- and orbital character, the apparent deviation between experimentally observed scattering events and the theoretically predicted spin polarization could be resolved.https://doi.org/10.1088/1367-2630/16/4/045017Rashba effectspin–orbit couplingscanning tunneling microscopyangle resolved photo emission spectroscopydensity functional theory |
| spellingShingle | L El-Kareh G Bihlmayer A Buchter H Bentmann S Blügel F Reinert M Bode A combined experimental and theoretical study of Rashba-split surface states on the Pb/Ag(111) surface New Journal of Physics Rashba effect spin–orbit coupling scanning tunneling microscopy angle resolved photo emission spectroscopy density functional theory |
| title | A combined experimental and theoretical study of Rashba-split surface states on the Pb/Ag(111) surface |
| title_full | A combined experimental and theoretical study of Rashba-split surface states on the Pb/Ag(111) surface |
| title_fullStr | A combined experimental and theoretical study of Rashba-split surface states on the Pb/Ag(111) surface |
| title_full_unstemmed | A combined experimental and theoretical study of Rashba-split surface states on the Pb/Ag(111) surface |
| title_short | A combined experimental and theoretical study of Rashba-split surface states on the Pb/Ag(111) surface |
| title_sort | combined experimental and theoretical study of rashba split surface states on the pb ag 111 surface |
| topic | Rashba effect spin–orbit coupling scanning tunneling microscopy angle resolved photo emission spectroscopy density functional theory |
| url | https://doi.org/10.1088/1367-2630/16/4/045017 |
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