Pair emission from a relativistic domain wall in antiferromagnets
arXiv:2007.13939 · doi:10.1103/PhysRevResearch.2.043226
Abstract
Magnon emission and excitation by a relativistic domain wall at a constant velocity in antiferromagnet is theoretically studied. A pair emission due to a quadratic magnon coupling is shown to be dominant. The emission corresponds in the comoving frame to a vacuum polarization induced by a zero-energy instability of the Lorentz-boosted anomalous response function. The emission rate is sensitive to the magnon dispersion and wall profile, and is significantly enhanced for a thin wall with velocity close to the effective light velocity. The Ohmic damping constant due to magnon excitation at low velocity is calculated.
References in corpus (16)
- Theory of Current-Driven Domain Wall Motion: A Poorman's Approach
- Microscopic approach to current-driven domain wall dynamics
- Staggering antiferromagnetic domain wall velocity in a staggered spin-orbit field
- Antiferromagnetic domain wall motion driven by spin-orbit torques
- Antiferromagnetic Domain Wall Motion Induced by Spin Waves
- The Schwinger mechanism and graphene
- Domain wall propagation through spin wave emission
- Effective gauge field theory of spintronics
- Spin-wave contributions to current-induced domain wall dynamics
- Blackbody emission from light interacting with an effective moving dispersive medium
- Entanglement Generation by Electric Field Background
- Atomic antiferromagnetic domain wall propagation beyond the relativistic limit
- Walker-like Domain Wall breakdown in layered Antiferromagnets driven by staggered spin-orbit fields
- Theory of spin transport through antiferromagnetic insulator
- Magnon-induced non-Markovian friction of a domain wall in a ferromagnet
- Collective coordinate study of spin wave emission from dynamic domain wall
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