Elastic and electronic tuning of magnetoresistance in MoTe₂.

ABSTRACT: Quasi-two-dimensional transition metal dichalcogenides exhibit dramatic properties that may transform electronic and photonic devices. We report on how the anomalously large magnetoresistance (MR) observed under high magnetic field in MoTe₂, a type II Weyl semimetal, can be reversibly controlled under tensile strain. The MR is enhanced by as much as ~30% at low temperatures and high magnetic fields when uniaxial strain is applied along the a crystallographic direction and reduced by about the same amount when strain is applied along the b direction. We show that the large in-plane electric anisotropy is coupled with the structural transition from the 1T' monoclinic to the T_d orthorhombic Weyl phase. A shift of the T_d-1T' phase boundary is achi

SUBMITTER: Yang J 

PROVIDER: S-EPMC5733108 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature