Chiral anomaly in Weyl semimetals from spin current injection
arXiv:2109.05467 · doi:10.21468/SciPostPhysCore.7.1.002
Abstract
Weyl semimetals are well-known for hosting topologically protected linear band crossings, serving as the analog of the relativistic Weyl Fermions in the condensed matter context. Such analogy persists deeply, allowing the existence of the chiral anomaly under parallel electric and magnetic field in Weyl semimetals. Different from such picture, here we show that, a unique mechanism of the chiral anomaly exists in Weyl semimetals by injecting a spin current with parallel spin polarization and flow direction. The existence of such a chiral anomaly is protected by the topological feature that each Weyl cone can also be a source or drain of the spin field in the momentum space. It leads to measurable experimental signals, such as an electric charge current parallel with an applied magnetic field in the absence of the electric field, and a sharp peak at certain resonant frequency in the injection current in achiral Weyl semimetals through the circular photogalvanic effect. Our work shows that the topological implication of Weyl semimetals goes beyond the link with relativistic Weyl Fermions, and offers a promising scenario to examine the interplay between topology and spin.
References in corpus (51)
- Spintronics: Fundamentals and applications
- Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
- Weyl and Dirac Semimetals in Three Dimensional Solids
- Discovery of a Weyl Fermion Semimetal and Topological Fermi Arcs
- The Chiral Magnetic Effect
- Experimental discovery of Weyl semimetal TaAs
- Observation of the chiral anomaly induced negative magneto-resistance in 3D Weyl semi-metal TaAs
- Chiral Anomaly and Classical Negative Magnetoresistance of Weyl Metals
- Giant anomalous Hall effect in a ferromagnetic Kagome-lattice semimetal
- Extremely large magnetoresistance and ultrahigh mobility in the topological Weyl semimetal NbP
- Topological response in Weyl semimetals and the chiral anomaly
- Magnetic Weyl Semimetal Phase in a Kagome Crystal
- Control of spin-orbit torques through crystal symmetry in WTe2/ferromagnet bilayers
- Signatures of the Adler-Bell-Jackiw chiral anomaly in a Weyl Fermion semimetal
- Quantized circular photogalvanic effect in Weyl semimetals
- Electromagnetic Response of Weyl Semimetals
- Topological quantum properties of chiral crystals
- On A Proper Definition of Spin Current
- Weyl Semimetals, Fermi Arcs and Chiral Anomalies (A Short Review)
- Chiral anomaly and transport in Weyl metals
- Time-Reversal-Breaking Weyl Fermions in Magnetic Heusler Alloys
- Chiral gauge field and axial anomaly in a Weyl semi-metal
- Weyl Metals
- Femtosecond control of electric currents at the interfaces of metallic ferromagnetic heterostructures
- Adler-Bell-Jackiw anomaly in Weyl semi-metals: Application to Pyrochlore Iridates
- Low-frequency divergence and quantum geometry of the bulk photovoltaic effect in topological semimetals
- Gyrotropic magnetic effect and the magnetic moment on the Fermi surface
- Giant intrinsic spin Hall effect in the TaAs family of Weyl semimetals
- Spin-polarized transport in inhomogeneous magnetic semiconductors: theory of magnetic/nonmagnetic p-n junctions
- Elastic Gauge Fields in Weyl Semimetals
- When chiral photons meet chiral fermions - Photoinduced anomalous Hall effects in Weyl semimetals
- Chiral magnetic effect and natural optical activity in (Weyl) metals
- Chiral photocurrent in parity-violating magnet and enhanced response in topological antiferromagnet
- Dichroic f-sum rule and the orbital magnetization of crystals
- Room-temperature chiral charge pumping in Dirac semimetals
- Spin-orbital Texture in Topological Insulators
- Strain induced Chiral Magnetic Effect in Weyl semimetals
- Topological Invariants of Metals and Related Physical Effects
- Observation of Spin Hall Effect in Weyl Semimetal WTe2 at Room Temperature
- Magnetic susceptibility in three-dimensional nodal semimetals
- Tunable Layer Circular Photogalvanic Effect in Twisted Bilayers
- Giant spin Hall angle in the Heusler alloy Weyl ferromagnet CoMnGa
- Intrinsic Fermi Surface Contribution to the Bulk Photovoltaic Effect
- Helical Spin Order from Topological Dirac and Weyl Semimetals
- Coherent control of optical injection of spin and currents in topological insulators
- Theory of light-induced effective magnetic field in Rashba ferromagnets
- Mirror Anomaly in Dirac Semimetals
- Theory of optical spin orientation in silicon
- Recent advancements in the study of intrinsic magnetic topological insulators and magnetic Weyl semimetals
- Magneto-optical Kerr effect and signature of the chiral anomaly in a Weyl semimetal in a magnetic field
- Mirror anomaly and anomalous Hall effect in type-I Dirac semimetals