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Layer-by-layer entangled spin-orbital texture of the topological surface state in Bi2Se3.
Phys Rev Lett 2013; 110(21):216401PR

Abstract

We study Bi(2)Se(3) by polarization-dependent angle-resolved photoemission spectroscopy and density-functional theory slab calculations. We find that the surface state Dirac fermions are characterized by a layer-dependent entangled spin-orbital texture, which becomes apparent through quantum interference effects. This explains the discrepancy between the spin polarization obtained in spin and angle-resolved photoemission spectroscopy-ranging from 20% to 85%-and the 100% value assumed in phenomenological models. It also suggests a way to probe the intrinsic spin texture of topological insulators, and to continuously manipulate the spin polarization of photoelectrons and photocurrents all the way from 0 to ±100% by an appropriate choice of photon energy, linear polarization, and angle of incidence.

Authors+Show Affiliations

Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

23745898

Citation

Zhu, Z-H, et al. "Layer-by-layer Entangled Spin-orbital Texture of the Topological Surface State in Bi2Se3." Physical Review Letters, vol. 110, no. 21, 2013, p. 216401.
Zhu ZH, Veenstra CN, Levy G, et al. Layer-by-layer entangled spin-orbital texture of the topological surface state in Bi2Se3. Phys Rev Lett. 2013;110(21):216401.
Zhu, Z. H., Veenstra, C. N., Levy, G., Ubaldini, A., Syers, P., Butch, N. P., ... Damascelli, A. (2013). Layer-by-layer entangled spin-orbital texture of the topological surface state in Bi2Se3. Physical Review Letters, 110(21), p. 216401.
Zhu ZH, et al. Layer-by-layer Entangled Spin-orbital Texture of the Topological Surface State in Bi2Se3. Phys Rev Lett. 2013 May 24;110(21):216401. PubMed PMID: 23745898.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Layer-by-layer entangled spin-orbital texture of the topological surface state in Bi2Se3. AU - Zhu,Z-H, AU - Veenstra,C N, AU - Levy,G, AU - Ubaldini,A, AU - Syers,P, AU - Butch,N P, AU - Paglione,J, AU - Haverkort,M W, AU - Elfimov,I S, AU - Damascelli,A, Y1 - 2013/05/21/ PY - 2013/01/29/received PY - 2013/6/11/entrez PY - 2013/6/12/pubmed PY - 2013/6/12/medline SP - 216401 EP - 216401 JF - Physical review letters JO - Phys. Rev. Lett. VL - 110 IS - 21 N2 - We study Bi(2)Se(3) by polarization-dependent angle-resolved photoemission spectroscopy and density-functional theory slab calculations. We find that the surface state Dirac fermions are characterized by a layer-dependent entangled spin-orbital texture, which becomes apparent through quantum interference effects. This explains the discrepancy between the spin polarization obtained in spin and angle-resolved photoemission spectroscopy-ranging from 20% to 85%-and the 100% value assumed in phenomenological models. It also suggests a way to probe the intrinsic spin texture of topological insulators, and to continuously manipulate the spin polarization of photoelectrons and photocurrents all the way from 0 to ±100% by an appropriate choice of photon energy, linear polarization, and angle of incidence. SN - 1079-7114 UR - https://www.unboundmedicine.com/medline/citation/23745898/Layer_by_layer_entangled_spin_orbital_texture_of_the_topological_surface_state_in_Bi2Se3_ L2 - http://link.aps.org/abstract/PRL/v110/p216401 DB - PRIME DP - Unbound Medicine ER -