  Transition metal dipnictides (TMDs) have recently been identified as possible
candidates to host 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 report, we have investigated the magnetotransport and
Fermi surface properties of single crystalline MoAs$_{2}$, another member of
this group of compounds. Field induced resistivity plateau and a large MR have
been observed, which are comparable to several topological systems.
Interestingly, in contrast to other isostructural materials, the carrier
density in MoAs$_{2}$ is quite high and shows single-band dominated transport.
The Fermi pockets, which have been identified from the quantum oscillation, are
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 MoAs$_{2}$ and 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.
