Current response to axial gauge fields in noncentrosymmetric magnetic Weyl semimetals

Abstract

We investigate the electric current response to axial gauge fields in noncentrosymmetric magnetic Weyl semimetals. The absence of both time-reversal and inversion symmetries allows for new types of responses. We systematically calculate the transverse, longitudinal, and Hall responses to axial gauge potentials with both linear and quadratic dispersion relations. The transverse and Hall responses are of comparable magnitude, while the longitudinal response is much smaller. Notably, with increasing frequency, the transverse and Hall response functions manifest a peak whose height is determined by the properties of Weyl fermions and is independent of the axial gauge potential. The main features of the response functions survive in the presence of disorders. As applications of our results, we propose a Hall type magnetopiezoelectric effect, where a transverse sound wave can induce an electric current whose direction is perpendicular to the directions of sound propagation and polarization. Our results also provide a mechanism to excite magnons using electric fields and could be useful for magnon spintronics.

arXiv comment7 pages and 4 figures

References in corpus (44)

• Weyl and Dirac Semimetals in Three Dimensional Solids
• Topological nodal semimetals
• Berry Curvature, Triangle Anomalies, and the Chiral Magnetic Effect in Fermi Liquids
• Weyl semimetal with broken time reversal and inversion symmetries
• Notes on Anomaly Induced Transport
• Theoretical prediction of magnetic and noncentrosymmetric Weyl fermion semimetal states in the R-Al-X family of compounds (R=rare earth, Al=aluminium, X=Si, Ge)
• Chiral anomaly from strain-induced gauge fields in Dirac and Weyl semimetals
• Inhomogeneous Weyl and Dirac semimetals: Transport in axial magnetic fields and Fermi arc surface states from pseudo Landau levels
• Magneto-optical conductivity of Weyl semimetals
• Strain induced Chiral Magnetic Effect in Weyl semimetals
• Topological Invariants of Metals and Related Physical Effects
• RKKY interaction of magnetic impurities in Dirac and Weyl semimetals
• Prediction of a magnetic Weyl semimetal without spin-orbit coupling and strong anomalous Hall effect in the Heusler compensated ferrimagnet Ti2MnAl
• Pseudo-electromagnetic fields in topological semimetals
• Optical Conductivity of Weyl Semimetals and Signatures of the Gapped Semimetal Phase Transition
• Theory of helimagnons in itinerant quantum systems
• Magnetic hexadecapole order and magnetopiezoelectric metal in Ba${}_{1-x}$K${}_x$Mn${}_2$As${}_2$
• Observation of Weyl fermions in a magnetic non-centrosymmetric crystal
• Topological responses from chiral anomaly in multi-Weyl semimetals
• Universal optical conductivity of a disordered Weyl semimetal
• Designer curved-space geometry for relativistic fermions in Weyl metamaterials
• Detecting Chiral Magnetic Effect by Lattice Dynamics
• Topological spiral magnetism in the Weyl semimetal SmAlSi
• Strong anomalous Nernst effect in collinear magnetic Weyl semimetals without net magnetic moments
• Chiral anomaly in Dirac semimetals due to dislocations
• Chirality-dependent planar Hall effect in inhomogeneous Weyl semimetals
• Dynamical piezoelectric and magnetopiezoelectric effects in polar metals from Berry phases and orbital moments
• Magneto-optical conductivity in generic Weyl semimetals
• Observation of Magnetopiezoelectric Effect in Antiferromagnetic Metal EuMnBi2
• Acoustogalvanic effect in Dirac and Weyl semimetals
• Topological magnetotorsional effect in Weyl semimetals
• Axial Magnetoelectric Effect in Dirac semimetals
• Imaginary part of Hall conductivity in tilted doped Weyl semimetal with both broken time reversal and inversion symmetry
• Optical Control of Chiral Charge Pumping in a Topological Weyl Semimetal
• Longitudinal magnetoconductance and the planar Hall conductance in inhomogeneous Weyl semimetals
• Optical conductivity of an interacting Weyl liquid in the collisionless regime
• Axial anomaly generation by domain wall motion in Weyl semimetals
• Optical signatures of type-II Weyl fermions in the noncentrosymmetric semimetals $R$AlSi ($R$=La, Ce, Pr, Nd, Sm)
• Chiral magnetic effect of hot electrons
• Effects of spatial dimensionality and band tilting on the longitudinal optical conductivities in Dirac bands
• The type-I antiferromagnetic Weyl semimetal InMnTi${}_2$
• Theory of the Strain-Induced Magnetoelectric Effect in Planar Dirac Systems
• Interaction and temperature effects on the magneto-optical conductivity of Weyl liquids
• Electric and chiral response to a pseudoelectric field in Weyl materials