Dirac state switching in transition metal diarsenides

  title={Dirac state switching in transition metal diarsenides},
  author={Gyanendra Dhakal and Md Mofazzel Hosen and Wei-Chi Chu and Bahadur Singh and Klauss Dimitri and BaoKai Wang and Firoz Kabir and Christopher Sims and Sabin Regmi and William D. Neff and Dariusz Kaczorowski and Arun Bansil and Madhab Neupane},
  journal={arXiv: Mesoscale and Nanoscale Physics},
Topological Dirac and Weyl semimetals, which support low-energy quasiparticles in condensed matter physics, are currently attracting intense interest due to exotic physical properties such as large magnetoresistance and high carrier mobilities. Transition metal diarsenides such as MoAs2 and WAs2 have been reported to harbor very high magnetoresistance suggesting the possible existence of a topological quantum state, although this conclusion remains dubious. Here, based on systematic angle… Expand

Figures from this paper


Probing the Fermi surface and magnetotransport properties of MoAs 2
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 andExpand
Observation of a three-dimensional topological Dirac semimetal phase in high-mobility Cd3As2.
The discovery of the Dirac-like bulk topological semimetal phase in Cd3As2 opens the door for exploring higher dimensional spin-orbit Dirac physics in a real material. Expand
Electronic structure and topological properties of centrosymmetric MoAs2/WAs2 from first principles
Using the adaptive K-mesh method, no energy degenerate state could be found except the spin degeneracy in the whole Brillouin zone, excluding the possibility of intrinsic Dirac or Weyl points near the Fermi level in the system. Expand
Dirac cone protected by non-symmorphic symmetry and three-dimensional Dirac line node in ZrSiS
This work shows that the highly stable, non-toxic and earth-abundant material, ZrSiS, has an electronic band structure that hosts several Dirac cones that form a Fermi surface with a diamond-shaped line of Dirac nodes, making it a very promising candidate to study Dirac electrons, as well as the properties of lines ofDirac nodes. Expand
Three-dimensional Dirac semimetal and quantum transport in Cd3As2
Based on the first-principles calculations, we recover the silent topological nature of Cd3As2, a well known semiconductor with high carrier mobility. We find that it is a symmetry-protectedExpand
Topological semimetal and Fermi-arc surface states in the electronic structure of pyrochlore iridates
We investigate novel phases that emerge from the interplay of electron correlations and strong spin-orbit interactions. We focus on describing the topological semimetal, a three-dimensional phase ofExpand
Discovery of Weyl fermion semimetals and topological Fermi arc states
Weyl semimetals are conductors whose low-energy bulk excitations are Weyl fermions, whereas their surfaces possess metallic Fermi arc surface states. These Fermi arc surface states are protected by aExpand
Experimental discovery of Weyl semimetal TaAs
Weyl semimetals are a class of materials that can be regarded as three-dimensional analogs of graphene breaking time reversal or inversion symmetry. Electrons in a Weyl semimetal behave as WeylExpand
Weyl Semimetal Phase in Noncentrosymmetric Transition-Metal Monophosphides
Based on first-principle calculations, we show that a family of nonmagnetic materials including TaAs, TaP, NbAs, and NbP are Weyl semimetals (WSM) without inversion centers. We find twelve pairs ofExpand
Termination-dependent topological surface states in nodal-loop semimetal HfP2
Symmetry plays a major role in all disciplines of physics. Within the field of topological materials there is a great interest in understanding how the mechanics of crystalline and internalExpand