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Probing the Fermi surface and magnetotransport properties of MoAs2

Singha, Ratnadwip and Pariari, Arnab and Gupta, Gaurav Kumar and Das, Tanmoy and Mandal, Prabhat (2018) Probing the Fermi surface and magnetotransport properties of MoAs2. In: PHYSICAL REVIEW B, 97 (15).

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Official URL: http://dx.doi.org/10.1103/PhysRevB.97.155120


Transition-metal dipnictides (TMDs) have recently been identified as possible candidates to host a topology-protected electronic band structure. These materials belong to an isostructural family and show several exotic transport properties. Especially, the large values of magnetoresistance (MR) and carrier mobility have drawn significant attention from the perspective of technological applications. In this paper, we investigate the magnetotransport and Fermi surface properties of single-crystalline MoAs2, another member of this group of compounds. A field-induced resistivity plateau and a large MR have been observed, which are comparable to those in several topological systems. Interestingly, in contrast to other isostructural materials, the carrier density in MoAs2 is quite high and shows single-band-dominated transport. The Fermi pockets, which have been identified from the quantum oscillation, are the largest among the members of this group and have significant anisotropy with crystallographic direction. Our first-principles calculations reveal a substantial difference between the band structures of MoAs2 and that of other TMDs. The calculated Fermi surface consists of one electron pocket and another ``open-orbit'' hole pocket, which has not been observed in TMDs so far.

Item Type: Journal Article
Additional Information: Copy right for this article belong to AMER PHYSICAL SOC, ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Depositing User: Id for Latest eprints
Date Deposited: 04 May 2018 18:48
Last Modified: 04 May 2018 18:48
URI: http://eprints.iisc.ac.in/id/eprint/59733

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