Antiferromagnetic Resonance Revisited: Dissipative Coupling without Dissipation

Published: Nov 18, 2021
Abstract
The antiferromagnet is a closed Hermitian system, we find that its excitations, even in the absence of dissipation, can be viewed as a non-Hermitian system with dissipative coupling. Consequently, the antiferromagnetic resonance spectrum does not show the typical level repulsion, but shows the level attraction -- a characteristic behavior often observed in non-Hermitian systems. Such behavior is because the antiferromagnetic ground state is...
Paper Details
Title
Antiferromagnetic Resonance Revisited: Dissipative Coupling without Dissipation
Published Date
Nov 18, 2021
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