Photoelectron spin-polarization control in the topological insulator Bi 2Se 3
We study the manipulation of the spin polarization of photoemitted electrons in Bi2Se3 by spin- and angle-resolved photoemission spectroscopy. General rules are established that enable controlling the photoelectron spin-polarization. We demonstrate the ± 100% reversal of a single component of the me...
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| Main Authors: | , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
20 February 2014
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| In: |
Physical review letters
Year: 2014, Volume: 112, Issue: 7, Pages: 076802 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.112.076802 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevLett.112.076802 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.112.076802 
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| Author Notes: | Z.-H. Zhu, C.N. Veenstra, S. Zhdanovich, M.P. Schneider, T. Okuda, K. Miyamoto, S.-Y. Zhu, H. Namatame, M. Taniguchi, M.W. Haverkort, I.S. Elfimov, and A. Damascelli |
| Summary: | We study the manipulation of the spin polarization of photoemitted electrons in Bi2Se3 by spin- and angle-resolved photoemission spectroscopy. General rules are established that enable controlling the photoelectron spin-polarization. We demonstrate the ± 100% reversal of a single component of the measured spin-polarization vector upon the rotation of light polarization, as well as full three-dimensional manipulation by varying experimental configuration and photon energy. While a material-specific density-functional theory analysis is needed for the quantitative description, a minimal yet fully generalized two-atomic-layer model qualitatively accounts for the spin response based on the interplay of optical selection rules, photoelectron interference, and topological surface-state complex structure. It follows that photoelectron spin-polarization control is generically achievable in systems with a layer-dependent, entangled spin-orbital texture. |
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| Item Description: | Die Ziffern 2 und 3 im Titel sind tiefgestellt Gesehen am 27.09.2017 |
| Physical Description: | Online Resource |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.112.076802 |