Abstract
The semimetal, as a typical layered transition-metal dichalcogenide, has recently attracted much attention due to an extremely large, nonsaturating parabolic magnetoresistance in the perpendicular field. Here, we report a systematic study of the angular dependence of the magnetoresistance in a single crystal. The significant anisotropic magnetotransport behavior in different magnetic field directions and violation of the Kohler's rule are observed. Unexpectedly, when the applied field and excitation current are both parallel to the tungsten chains of , an exotic large longitudinal linear magnetoresistance as high as at and is identified. Our results imply that the semimetal, due to its balanced hole and electron populations, seems to be the first material for which a large longitudinal linear magnetoresistance appears when the external magnetic field is parallel to the applied current. Our work may stimulate studies of double-carrier correlated materials and the corresponding quantum physics.
- Received 16 February 2015
- Revised 11 June 2015
DOI:https://doi.org/10.1103/PhysRevB.92.041104
©2015 American Physical Society