Large magnetoresistance in the type-II Weyl semimetal semimetal WP[subscript 2]
We report a magnetotransport study on type-II Weyl semimetal WP[subscript 2] single crystals. Magnetoresistance exhibits a nonsaturating H[superscript n] field dependence (14 300% at 2 K and 9 T), whereas systematic violation of Kohler's rule was observed. Quantum oscillations reveal a complex...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2018
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| Online Access: | http://hdl.handle.net/1721.1/113349 https://orcid.org/0000-0003-2099-7015 |
| _version_ | 1826202006365143040 |
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| author | Wang, Aifeng Graf, D. Liu, Yu Du, Qianheng Lei, Hechang Petrovic, C. Zheng, Jiabao |
| author2 | Massachusetts Institute of Technology. Research Laboratory of Electronics |
| author_facet | Massachusetts Institute of Technology. Research Laboratory of Electronics Wang, Aifeng Graf, D. Liu, Yu Du, Qianheng Lei, Hechang Petrovic, C. Zheng, Jiabao |
| author_sort | Wang, Aifeng |
| collection | MIT |
| description | We report a magnetotransport study on type-II Weyl semimetal WP[subscript 2] single crystals. Magnetoresistance exhibits a nonsaturating H[superscript n] field dependence (14 300% at 2 K and 9 T), whereas systematic violation of Kohler's rule was observed. Quantum oscillations reveal a complex multiband electronic structure. The cyclotron effective mass close to the mass of free electron m[subscript e] was observed in quantum oscillations along the b axis, while a reduced effective mass of about 0.5m[subscript e] was observed in a-axis quantum oscillations, suggesting Fermi surface anisotropy. The temperature dependence of the resistivity shows a large upturn that cannot be explained by the multiband magnetoresistance of conventional metals. Even though the crystal structure of WP[subscript 2] is not layered as in transition-metal dichalcogenides, quantum oscillations suggest partial two-dimensional character. |
| first_indexed | 2024-09-23T12:00:24Z |
| format | Article |
| id | mit-1721.1/113349 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T12:00:24Z |
| publishDate | 2018 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1133492022-09-27T23:28:33Z Large magnetoresistance in the type-II Weyl semimetal semimetal WP[subscript 2] Wang, Aifeng Graf, D. Liu, Yu Du, Qianheng Lei, Hechang Petrovic, C. Zheng, Jiabao Massachusetts Institute of Technology. Research Laboratory of Electronics Zheng, Jiabao We report a magnetotransport study on type-II Weyl semimetal WP[subscript 2] single crystals. Magnetoresistance exhibits a nonsaturating H[superscript n] field dependence (14 300% at 2 K and 9 T), whereas systematic violation of Kohler's rule was observed. Quantum oscillations reveal a complex multiband electronic structure. The cyclotron effective mass close to the mass of free electron m[subscript e] was observed in quantum oscillations along the b axis, while a reduced effective mass of about 0.5m[subscript e] was observed in a-axis quantum oscillations, suggesting Fermi surface anisotropy. The temperature dependence of the resistivity shows a large upturn that cannot be explained by the multiband magnetoresistance of conventional metals. Even though the crystal structure of WP[subscript 2] is not layered as in transition-metal dichalcogenides, quantum oscillations suggest partial two-dimensional character. 2018-01-30T18:12:36Z 2018-01-30T18:12:36Z 2017-09 2017-04 2017-11-14T22:46:13Z Article http://purl.org/eprint/type/JournalArticle 2469-9950 2469-9969 http://hdl.handle.net/1721.1/113349 Wang, Aifeng, et al. “Large Magnetoresistance in the Type-II Weyl Semimetal WP 2.” Physical Review B, vol. 96, no. 12, Sept. 2017. © 2017 American Physical Society https://orcid.org/0000-0003-2099-7015 en http://dx.doi.org/10.1103/PhysRevB.96.121107 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 | Wang, Aifeng Graf, D. Liu, Yu Du, Qianheng Lei, Hechang Petrovic, C. Zheng, Jiabao Large magnetoresistance in the type-II Weyl semimetal semimetal WP[subscript 2] |
| title | Large magnetoresistance in the type-II Weyl semimetal semimetal WP[subscript 2] |
| title_full | Large magnetoresistance in the type-II Weyl semimetal semimetal WP[subscript 2] |
| title_fullStr | Large magnetoresistance in the type-II Weyl semimetal semimetal WP[subscript 2] |
| title_full_unstemmed | Large magnetoresistance in the type-II Weyl semimetal semimetal WP[subscript 2] |
| title_short | Large magnetoresistance in the type-II Weyl semimetal semimetal WP[subscript 2] |
| title_sort | large magnetoresistance in the type ii weyl semimetal semimetal wp subscript 2 |
| url | http://hdl.handle.net/1721.1/113349 https://orcid.org/0000-0003-2099-7015 |
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