Charge Friedel oscillations in a Mott insulator
When a metal undergoes a transition to an insulator it will lose its electronic Fermi surface. Interestingly, in some situations a “ghost” Fermi surface of electrically neutral spin carrying fermions may survive into the insulator. Such a novel ghost Fermi surface has been proposed to underlie the p...
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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/1721.1/67061 https://orcid.org/0000-0003-4203-4148 |
| _version_ | 1811085972695154688 |
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| author | Mross, David Fabian Todadri, Senthil |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Mross, David Fabian Todadri, Senthil |
| author_sort | Mross, David Fabian |
| collection | MIT |
| description | When a metal undergoes a transition to an insulator it will lose its electronic Fermi surface. Interestingly, in some situations a “ghost” Fermi surface of electrically neutral spin carrying fermions may survive into the insulator. Such a novel ghost Fermi surface has been proposed to underlie the properties of a few different materials but its direct detection has proven elusive. In this paper, we show that the ghost Fermi surface leads to slowly decaying spatial oscillations of the electron density near impurities or other defects. These and related oscillations stem from the sharpness of the ghost Fermi surface and are direct analogs of the familiar Friedel oscillations in metals. The oscillation period contains geometric information about the shape of the ghost Fermi surface, which can be potentially exploited to detect its existence. |
| first_indexed | 2024-09-23T13:18:53Z |
| format | Article |
| id | mit-1721.1/67061 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:18:53Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/670612022-10-01T14:27:02Z Charge Friedel oscillations in a Mott insulator Mross, David Fabian Todadri, Senthil Massachusetts Institute of Technology. Department of Physics Senthil, Todadri Mross, David Fabian Todadri, Senthil When a metal undergoes a transition to an insulator it will lose its electronic Fermi surface. Interestingly, in some situations a “ghost” Fermi surface of electrically neutral spin carrying fermions may survive into the insulator. Such a novel ghost Fermi surface has been proposed to underlie the properties of a few different materials but its direct detection has proven elusive. In this paper, we show that the ghost Fermi surface leads to slowly decaying spatial oscillations of the electron density near impurities or other defects. These and related oscillations stem from the sharpness of the ghost Fermi surface and are direct analogs of the familiar Friedel oscillations in metals. The oscillation period contains geometric information about the shape of the ghost Fermi surface, which can be potentially exploited to detect its existence. National Science Foundation (U.S.) (Grant DMR-0705255) 2011-11-18T18:58:36Z 2011-11-18T18:58:36Z 2011-07 2011-06 Article http://purl.org/eprint/type/JournalArticle 1098-0121 1550-235X http://hdl.handle.net/1721.1/67061 Mross, David, and T. Senthil. “Charge Friedel oscillations in a Mott insulator.” Physical Review B 84 (2011): n. pag. Web. 18 Nov. 2011. © 2011 American Physical Society https://orcid.org/0000-0003-4203-4148 en_US http://dx.doi.org/10.1103/PhysRevB.84.041102 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. application/pdf American Physical Society APS |
| spellingShingle | Mross, David Fabian Todadri, Senthil Charge Friedel oscillations in a Mott insulator |
| title | Charge Friedel oscillations in a Mott insulator |
| title_full | Charge Friedel oscillations in a Mott insulator |
| title_fullStr | Charge Friedel oscillations in a Mott insulator |
| title_full_unstemmed | Charge Friedel oscillations in a Mott insulator |
| title_short | Charge Friedel oscillations in a Mott insulator |
| title_sort | charge friedel oscillations in a mott insulator |
| url | http://hdl.handle.net/1721.1/67061 https://orcid.org/0000-0003-4203-4148 |
| work_keys_str_mv | AT mrossdavidfabian chargefriedeloscillationsinamottinsulator AT todadrisenthil chargefriedeloscillationsinamottinsulator |