New Type of “Dark” States in the Spectrum of Radiative Magnon Polarons

The appearance of new types of bound (“dark”) states in the continuous spectrum of shear phonons of the radiation field of leaky magnon polarons in an acoustically open “easy-axis antiferromagnet–superconductor” sandwich structure can be determined by the relative orientation of the plane of inciden...

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Bibliographic Details
Published in:JETP letters 2022, Vol.115 (2), p.84-92
Main Authors: Tarasenko, S. V., Shavrov, V. G.
Format: Article
Language:English
Subjects:
Antiferromagnetism
Atomic
Biological and Medical Physics
Biophysics
Birefringence
Condensed Matter
Dipoles
Elastic waves
Magnons
Molecular
Optical and Plasma Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Polarons
Quantum Information Technology
Sandwich structures
Solid State Physics
Spintronics
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Summary:The appearance of new types of bound (“dark”) states in the continuous spectrum of shear phonons of the radiation field of leaky magnon polarons in an acoustically open “easy-axis antiferromagnet–superconductor” sandwich structure can be determined by the relative orientation of the plane of incidence of a transverse elastic wave and the equilibrium antiferromagnetism vector in the interface plane between the media. The effect is based on the elastic dipole mechanism of the formation of magneto-acoustic birefringence with a change of the refraction cavity induced by the symmetric or antisymmetric Dzyaloshinskii interaction.
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364022020102