# Impurity scattering in Weyl semimetals and their stability classification

@article{Huang2013ImpuritySI, title={Impurity scattering in Weyl semimetals and their stability classification}, author={Zhoushen Huang and Daniel P. Arovas and Alexander V. Balatsky}, journal={New Journal of Physics}, year={2013}, volume={15}, pages={123019} }

Weyl semimetals (WS) are a new class of Dirac-type materials exhibiting a phase with bulk energy nodes and an associated vanishing density of states (DOS). We investigate the stability of this nodal DOS suppression in the presence of local impurities and consider whether or not such a suppression can be lifted by impurity-induced resonances. We find that while a scalar (chemical potential type) impurity can always induce a resonance at arbitrary energy and hence lift the DOS suppression at…

## 11 Citations

Electron scattering by magnetic impurity in Weyl semimetals

- Physics
- 2021

Weyl semimetals are prominent examples of topologically protected quantum matter. These materials are the three-dimensional counterparts of graphene and great efforts are being devoted to achieve a…

Resonance states and beating pattern induced by quantum impurity scattering in Weyl/Dirac semimetals

- PhysicsScientific reports
- 2016

It is found that the quantum impurity scattering can create nodal resonance and Kondo peak/dip in the host bulk states, remarkably modifying the pristine spectrum structure.

Proximity-induced superconductivity in Weyl semimetals

- Physics
- 2014

We introduce superconducting proximity effects in Weyl semi-metals (WSM) with broken time reversal symmetry by tunnel coupling one of its surfaces to an s-wave superconductor using the Green's…

Dynamic conductivity modified by impurity resonant states in doping three-dimensional Dirac semimetals

- Physics
- 2017

The impurity effect is studied in three-dimensional Dirac semimetals in the framework of a T-matrix method to consider the multiple scattering events of Dirac electrons off impurities. It has been…

Engineering and Probing Topological Properties of Dirac Semimetal Films by Asymmetric Charge Transfer.

- PhysicsNano letters
- 2017

It is demonstrated that despite a band gap in DSM films, asymmetric charge transfer at the surface enables one to accurately identify locations of the Dirac-node projections from gapless band crossings and to examine and engineer properties of the topological Fermi-arc surface states connecting the projections, by simulating adatom-adsorbed DSM films using a first-principles method with an effective model.

Chiral anomaly and transport in Weyl metals.

- PhysicsJournal of physics. Condensed matter : an Institute of Physics journal
- 2015

The AHE in a Weyl metal is shown to be a purely intrinsic, universal property, fully determined by the location of the Weyl nodes in the first Brillouin zone, and a fully microscopic theory of diffusive magnetotransport in Weyl metals is developed.

Effects of anisotropy and disorder on the conductivity of Weyl semimetals

- Materials Science, Physics
- 2015

We study dc conductivity of a Weyl semimetal with uniaxial anisotropy (Fermi velocity ratio $\xi= v_\bot/v_\parallel\neq1$) considering the scattering of charge carriers by a wide class of impurity…

Thermopower in an anisotropic two-dimensional Weyl semimetal

- PhysicsPhysical Review B
- 2020

We investigate the generation of an electric current from a temperature gradient in a two-dimensional Weyl semimetal with anisotropy, in both the presence and absence of a quantizing magnetic field.…

Quantum collision theory in flat bands

- Physics, Mathematics
- 2016

We consider quantum scattering of particles in media exhibiting strong dispersion degeneracy. In particular, we study flat-banded lattices and linearly dispersed energy bands. The former constitute a…

Disordered fermionic quantum critical points

- PhysicsPhysical Review B
- 2018

We study the effect of quenched disorder on the semimetal-superconductor quantum phase transition in a model of two-dimensional Dirac semimetal with $N$ flavors of two-component Dirac fermions, using…

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