Transport signatures of Fermi surface topology change in BiTeI
We report a quantum magnetotransport signature of a change in the Fermi surface topology in the Rashba semiconductor BiTeI with a systematic tuning of the Fermi level E[subscript F]. Beyond the quantum limit, we observe a marked increase (decrease) in electrical resistivity when E[subscript F] is ab...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2015
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| Online Access: | http://hdl.handle.net/1721.1/97018 https://orcid.org/0000-0003-0325-5204 |
| _version_ | 1810983910749765632 |
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| author | Ye, Linda Kagawa, Fumitaka Tokura, Yoshinori Checkelsky, Joseph George |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Ye, Linda Kagawa, Fumitaka Tokura, Yoshinori Checkelsky, Joseph George |
| author_sort | Ye, Linda |
| collection | MIT |
| description | We report a quantum magnetotransport signature of a change in the Fermi surface topology in the Rashba semiconductor BiTeI with a systematic tuning of the Fermi level E[subscript F]. Beyond the quantum limit, we observe a marked increase (decrease) in electrical resistivity when E[subscript F] is above (below) the Dirac node that we show originates from the Fermi surface topology. This effect represents a measurement of the electron distribution on low-index (n = 0, −1) Landau levels and is uniquely enabled by the finite bulk k[subscript z] dispersion along the c axis and strong Rashba spin-orbit coupling strength of the system. The Dirac node is independently identified by Shubnikov–de Haas oscillations as a vanishing Fermi surface cross section at k[subscript z] = 0. Additionally, we find that the violation of Kohler's rule allows a distinct insight into the temperature evolution of the observed quantum magnetoresistance effects. |
| first_indexed | 2024-09-23T10:54:03Z |
| format | Article |
| id | mit-1721.1/97018 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:54:03Z |
| publishDate | 2015 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/970182022-09-30T23:48:20Z Transport signatures of Fermi surface topology change in BiTeI Ye, Linda Kagawa, Fumitaka Tokura, Yoshinori Checkelsky, Joseph George Massachusetts Institute of Technology. Department of Physics Checkelsky, Joseph George We report a quantum magnetotransport signature of a change in the Fermi surface topology in the Rashba semiconductor BiTeI with a systematic tuning of the Fermi level E[subscript F]. Beyond the quantum limit, we observe a marked increase (decrease) in electrical resistivity when E[subscript F] is above (below) the Dirac node that we show originates from the Fermi surface topology. This effect represents a measurement of the electron distribution on low-index (n = 0, −1) Landau levels and is uniquely enabled by the finite bulk k[subscript z] dispersion along the c axis and strong Rashba spin-orbit coupling strength of the system. The Dirac node is independently identified by Shubnikov–de Haas oscillations as a vanishing Fermi surface cross section at k[subscript z] = 0. Additionally, we find that the violation of Kohler's rule allows a distinct insight into the temperature evolution of the observed quantum magnetoresistance effects. Japan Society for the Promotion of Science (KAKENHI Grant 24224009) 2015-05-19T13:24:47Z 2015-05-19T13:24:47Z 2015-05 2015-04 2015-05-15T22:00:10Z Article http://purl.org/eprint/type/JournalArticle 1098-0121 1550-235X http://hdl.handle.net/1721.1/97018 Ye, Linda, Joseph G. Checkelsky, Fumitaka Kagawa, and Yoshinori Tokura. “Transport Signatures of Fermi Surface Topology Change in BiTeI.” Physical Review B 91.20 (2015): n. pag. © 2015 American Physical Society https://orcid.org/0000-0003-0325-5204 en http://dx.doi.org/10.1103/PhysRevB.91.201104 Physical Review B 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. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Ye, Linda Kagawa, Fumitaka Tokura, Yoshinori Checkelsky, Joseph George Transport signatures of Fermi surface topology change in BiTeI |
| title | Transport signatures of Fermi surface topology change in BiTeI |
| title_full | Transport signatures of Fermi surface topology change in BiTeI |
| title_fullStr | Transport signatures of Fermi surface topology change in BiTeI |
| title_full_unstemmed | Transport signatures of Fermi surface topology change in BiTeI |
| title_short | Transport signatures of Fermi surface topology change in BiTeI |
| title_sort | transport signatures of fermi surface topology change in bitei |
| url | http://hdl.handle.net/1721.1/97018 https://orcid.org/0000-0003-0325-5204 |
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