Theory of anomalous magnetotransport from mass anisotropy
In underdoped YBa[subscript 2]Cu[subscript 3]O[subscript 6+x], there is evidence of a small Fermi surface pocket subject to substantial mass enhancement in the doping regime 0.12<p<0.16. This mass enhancement may vary substantially over the Fermi surface, due to “hot spot” or other relevant ph...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2017
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| Online Access: | http://hdl.handle.net/1721.1/110296 |
| _version_ | 1826208997805391872 |
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| author | Zou, Liujun Lederer, Samuel Senthil, T. |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Zou, Liujun Lederer, Samuel Senthil, T. |
| author_sort | Zou, Liujun |
| collection | MIT |
| description | In underdoped YBa[subscript 2]Cu[subscript 3]O[subscript 6+x], there is evidence of a small Fermi surface pocket subject to substantial mass enhancement in the doping regime 0.12<p<0.16. This mass enhancement may vary substantially over the Fermi surface, due to “hot spot” or other relevant physics. We therefore examine the magnetotransport of an electronlike Fermi pocket with large effective mass anisotropy. Within the relaxation time approximation, we show that even for a pocket with a fixed shape, the magnitude and sign of the Hall effect may change as the mass anisotropy changes (except at very large, likely inaccessible magnetic fields). We discuss implications for recent Hall measurements in near optimally doped cuprates in high fields. In addition we identify a novel intermediate asymptotic regime of magnetic field, characterized by B-linear magnetoresistance. Similar phenomena should occur in a variety of other experimental systems with anisotropic mass enhancement. |
| first_indexed | 2024-09-23T14:16:03Z |
| format | Article |
| id | mit-1721.1/110296 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T14:16:03Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1102962024-06-28T14:12:20Z Theory of anomalous magnetotransport from mass anisotropy Zou, Liujun Lederer, Samuel Senthil, T. Massachusetts Institute of Technology. Department of Physics Lederer, Samuel Senthil, T. In underdoped YBa[subscript 2]Cu[subscript 3]O[subscript 6+x], there is evidence of a small Fermi surface pocket subject to substantial mass enhancement in the doping regime 0.12<p<0.16. This mass enhancement may vary substantially over the Fermi surface, due to “hot spot” or other relevant physics. We therefore examine the magnetotransport of an electronlike Fermi pocket with large effective mass anisotropy. Within the relaxation time approximation, we show that even for a pocket with a fixed shape, the magnitude and sign of the Hall effect may change as the mass anisotropy changes (except at very large, likely inaccessible magnetic fields). We discuss implications for recent Hall measurements in near optimally doped cuprates in high fields. In addition we identify a novel intermediate asymptotic regime of magnetic field, characterized by B-linear magnetoresistance. Similar phenomena should occur in a variety of other experimental systems with anisotropic mass enhancement. United States. Department of Energy (DE-SC0008739) 2017-06-27T13:27:21Z 2017-06-27T13:27:21Z 2017-06 2017-04 2017-06-26T22:00:04Z Article http://purl.org/eprint/type/JournalArticle 2469-9950 2469-9969 http://hdl.handle.net/1721.1/110296 Zou, Liujun; Lederer, Samuel and Senthil, T. "Theory of anomalous magnetotransport from mass anisotropy." Physical Review B 95, 245135 (June 2017): 1-7 © 2017 American Physical Society en http://dx.doi.org/10.1103/PhysRevB.95.245135 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 | Zou, Liujun Lederer, Samuel Senthil, T. Theory of anomalous magnetotransport from mass anisotropy |
| title | Theory of anomalous magnetotransport from mass anisotropy |
| title_full | Theory of anomalous magnetotransport from mass anisotropy |
| title_fullStr | Theory of anomalous magnetotransport from mass anisotropy |
| title_full_unstemmed | Theory of anomalous magnetotransport from mass anisotropy |
| title_short | Theory of anomalous magnetotransport from mass anisotropy |
| title_sort | theory of anomalous magnetotransport from mass anisotropy |
| url | http://hdl.handle.net/1721.1/110296 |
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