Electronic Structure of the Topological Insulator Bi[subscript 2]Se[subscript 3] Using Angle-Resolved Photoemission Spectroscopy: Evidence for a Nearly Full Surface Spin Polarization
We performed high-resolution spin- and angle-resolved photoemission spectroscopy studies of the electronic structure and the spin texture on the surface of Bi[subscript 2]Se[subscript 3], a model TI. By tuning the photon energy, we found that the topological surface state is well separated from the...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2011
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| Online Access: | http://hdl.handle.net/1721.1/66115 https://orcid.org/0000-0003-2226-6443 https://orcid.org/0000-0002-7022-8313 |
| _version_ | 1811095358594351104 |
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| author | Pan, Z.-H. Vescovo, E. Fedorov, A. V. Gardner, Dillon Richard Lee, Young S. Chu, Shaoyan Gu, G. D. Valla, T. |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Pan, Z.-H. Vescovo, E. Fedorov, A. V. Gardner, Dillon Richard Lee, Young S. Chu, Shaoyan Gu, G. D. Valla, T. |
| author_sort | Pan, Z.-H. |
| collection | MIT |
| description | We performed high-resolution spin- and angle-resolved photoemission spectroscopy studies of the electronic structure and the spin texture on the surface of Bi[subscript 2]Se[subscript 3], a model TI. By tuning the photon energy, we found that the topological surface state is well separated from the bulk states in the vicinity of kz=Z plane of the bulk Brillouin zone. The spin-resolved measurements in that region indicate a very high degree of spin polarization of the surface state, ∼0.75, much higher than previously reported. Our results demonstrate that the topological surface state on Bi[subscript 2]Se[subscript 3] is highly spin polarized and that the dominant factors limiting the polarization are mainly extrinsic. |
| first_indexed | 2024-09-23T16:15:49Z |
| format | Article |
| id | mit-1721.1/66115 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:15:49Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/661152022-10-02T07:21:01Z Electronic Structure of the Topological Insulator Bi[subscript 2]Se[subscript 3] Using Angle-Resolved Photoemission Spectroscopy: Evidence for a Nearly Full Surface Spin Polarization Electronic Structure of the Topological Insulator Bi2Se3 Using Angle-Resolved Photoemission Spectroscopy: Evidence for a Nearly Full Surface Spin Polarization Pan, Z.-H. Vescovo, E. Fedorov, A. V. Gardner, Dillon Richard Lee, Young S. Chu, Shaoyan Gu, G. D. Valla, T. Massachusetts Institute of Technology. Department of Materials Science and Engineering Massachusetts Institute of Technology. Department of Physics Chu, Shaoyan Chu, Shaoyan Gardner, Dillon Richard Lee, Young S. We performed high-resolution spin- and angle-resolved photoemission spectroscopy studies of the electronic structure and the spin texture on the surface of Bi[subscript 2]Se[subscript 3], a model TI. By tuning the photon energy, we found that the topological surface state is well separated from the bulk states in the vicinity of kz=Z plane of the bulk Brillouin zone. The spin-resolved measurements in that region indicate a very high degree of spin polarization of the surface state, ∼0.75, much higher than previously reported. Our results demonstrate that the topological surface state on Bi[subscript 2]Se[subscript 3] is highly spin polarized and that the dominant factors limiting the polarization are mainly extrinsic. United States. Dept. of Energy (Contract No. DE-AC02-98CH10886) United States. Dept. of Energy (DOE Grant No. DE-FG02-04ER4613) United States. Dept. of Energy (Contract No. DE-AC03- 76SF00098) 2011-09-29T14:15:44Z 2011-09-29T14:15:44Z 2011-06 2011-01 Article http://purl.org/eprint/type/JournalArticle 0031-9007 http://hdl.handle.net/1721.1/66115 Pan, Z.-H. et al. “Electronic Structure of the Topological Insulator Bi_{2}Se_{3} Using Angle-Resolved Photoemission Spectroscopy: Evidence for a Nearly Full Surface Spin Polarization.” Physical Review Letters 106 (2011). © 2011 American Physical Society. https://orcid.org/0000-0003-2226-6443 https://orcid.org/0000-0002-7022-8313 en_US http://dx.doi.org/10.1103/PhysRevLett.106.257004 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Pan, Z.-H. Vescovo, E. Fedorov, A. V. Gardner, Dillon Richard Lee, Young S. Chu, Shaoyan Gu, G. D. Valla, T. Electronic Structure of the Topological Insulator Bi[subscript 2]Se[subscript 3] Using Angle-Resolved Photoemission Spectroscopy: Evidence for a Nearly Full Surface Spin Polarization |
| title | Electronic Structure of the Topological Insulator Bi[subscript 2]Se[subscript 3] Using Angle-Resolved Photoemission Spectroscopy: Evidence for a Nearly Full Surface Spin Polarization |
| title_full | Electronic Structure of the Topological Insulator Bi[subscript 2]Se[subscript 3] Using Angle-Resolved Photoemission Spectroscopy: Evidence for a Nearly Full Surface Spin Polarization |
| title_fullStr | Electronic Structure of the Topological Insulator Bi[subscript 2]Se[subscript 3] Using Angle-Resolved Photoemission Spectroscopy: Evidence for a Nearly Full Surface Spin Polarization |
| title_full_unstemmed | Electronic Structure of the Topological Insulator Bi[subscript 2]Se[subscript 3] Using Angle-Resolved Photoemission Spectroscopy: Evidence for a Nearly Full Surface Spin Polarization |
| title_short | Electronic Structure of the Topological Insulator Bi[subscript 2]Se[subscript 3] Using Angle-Resolved Photoemission Spectroscopy: Evidence for a Nearly Full Surface Spin Polarization |
| title_sort | electronic structure of the topological insulator bi subscript 2 se subscript 3 using angle resolved photoemission spectroscopy evidence for a nearly full surface spin polarization |
| url | http://hdl.handle.net/1721.1/66115 https://orcid.org/0000-0003-2226-6443 https://orcid.org/0000-0002-7022-8313 |
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