Weyl fermions induced Magnon electrodynamics in Weyl semimetal

Abstract

Weyl fermions, which are fermions with definite chiralities, can give rise to anomalous breaking of the symmetry of the physical system which they are a part of. In their (3+1)-dimensional realizations in condensed matter systems, i.e., the so-called Weyl semimetals, this anomaly gives rise to topological electromagnetic response of magnetic fluctuations, which takes the form of non-local interaction between magnetic fluctuations and electromagnetic fields. We study the physical consequences of this non-local interaction, including electric field assisted magnetization dynamics, an extra gapless magnon dispersion, and polariton behaviors that feature "sibling" bands in small magnetic fields.

arXiv comment8 pages, 3 figures

References in corpus (14)

• Topological Field Theory of Time-Reversal Invariant Insulators
• Weyl Semimetal in a Topological Insulator Multilayer
• Topological response in Weyl semimetals and the chiral anomaly
• Quantum Hall effects in a Weyl Semi-Metal: possible application in pyrochlore Iridates
• Recent developments in transport phenomena in Weyl semimetals
• Dynamical Axion Field in Topological Magnetic Insulators
• Chiral gauge field and axial anomaly in a Weyl semi-metal
• Electromagnetic and gravitational responses and anomalies in topological insulators and superconductors
• Carrier-independent ferromagnetism and giant anomalous Hall effect in magnetic topological insulator
• Chiral anomaly, Charge Density Waves, and Axion Strings from Weyl Semimetals
• Axion response in Weyl semimetals
• Gravitational Anomalies and Thermal Hall effect in Topological Insulators
• Topological field theory and thermal responses of interacting topological superconductors
• The Z2-anomaly and boundaries of topological insulators

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