Bose condensation and spin superfluidity of magnons in a perpendicularly magnetized film of yttrium iron garnet

Abstract

The formation of a Bose condensate of magnons in a perpendicularly magnetized film of yttrium iron garnet under radio-frequency pumping in a strip line is studied experimentally. The characteristics of nonlinear magnetic resonance and the spatial distribution of the Bose condensate of magnons in the magnetic field gradient are investigated. In these experiments, the Bosonic system of magnons behaves similarly to the Bose condensate of magnons in the antiferromagnetic superfluid 3He-B, which was studied in detail earlier. Magnonic BEC forms a coherently precessing state with the properties of magnonic superfluidity. Its stability is determined by the repulsive potential between excited magnons, which compensates for the inhomogeneity of the magnetic field.

5 pages, 4 figures

References in corpus (5)

• Supplementary information for "Quantum supremacy using a programmable superconducting processor"
• Bose-Einstein condensation of magnons in superfluid 3He
• Magnon condensation into Q-ball in 3He-B
• Twenty years of magnon Bose condensation and spin current superfluidity in 3He-B
• Magnonics and Supermagnonics

Cited by in corpus (4)

• Nonlinear two-level dynamics of quantum time crystals
• Magnon Bose-Einstein condensates: from time crystals and quantum chromodynamics to vortex sensing and cosmology
• Josephson-like magnetic tunnel junction -- transition from classical to quantum regime
• Micromagnetic modeling of magnon coherent states in a nonuniform magnetic field