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113349 |
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|a Wang, Aifeng
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|a Massachusetts Institute of Technology. Research Laboratory of Electronics
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|a Zheng, Jiabao
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|a Graf, D.
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|a Liu, Yu
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|a Du, Qianheng
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|a Lei, Hechang
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|a Petrovic, C.
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|a Zheng, Jiabao
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|a Large magnetoresistance in the type-II Weyl semimetal semimetal WP[subscript 2]
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|b American Physical Society,
|c 2018-01-30T18:12:36Z.
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|u http://hdl.handle.net/1721.1/113349
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|a 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.
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