Origin of magnetoresistance suppression in thin $\gamma$-MoTe${}_2$

Abstract

We use both classical magnetotransport and quantum oscillation measurements to study the thickness evolution of the extremely large magnetoresistance (XMR) material and type-II Weyl semimetal candidate, $\gamma$-MoTe${}_2$, protected from oxidation. We find that the magnetoresistance is systematically suppressed with reduced thickness. This occurs concomitantly with both a decrease in carrier mobility and increase in electron-hole imbalance. We model the two effects separately and conclude that the XMR effect is more sensitive to the former.

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Cited by in corpus (11)

• Flat bands, strange metals, and the Kondo effect
• Giant $c$-axis nonlinear anomalous Hall effect in T${}_d$-MoTe${}_2$ and WTe${}_2$
• Layer-dependent spin-orbit torques generated by the centrosymmetric transition metal dichalcogenide $\beta$-MoTe${}_2$
• Tailored tunnel magnetoresistance response in three ultrathin chromium trihalides
• Direct evidence for charge compensation induced large magnetoresistance in thin WTe2
• T${}_d$ to 1T${}^{\prime }$ structural phase transition in WTe${}_2$ Weyl semimetal
• Edelstein effect induced superconducting diode effect in inversion symmetry breaking MoTe${}_2$ Josephson junctions
• Detection of hole pockets in the candidate type-II Weyl semimetal MoTe${}_2$ from Shubnikov-de Haas quantum oscillations
• Topological phase transition in MoTe${}_2$: A Review
• How to identify and characterize strongly correlated topological semimetals
• Photoinduced Interlayer Dynamics in T${}_d$-MoTe${}_2$: A Broadband Pump-Probe Study