Nonequilibrium Bose-Einstein condensation of hot magnons

We present an analysis of the emergence of a nonequilibrium Bose-Einstein-type condensation of magnons in radio-frequency pumped magnetic thin films, which has recently been experimentally observed. A complete description of all the nonequilibrium processes involved is given. It is demonstrated that...

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Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2010-10, Vol.82 (14), Article 140404
Main Authors: Vannucchi, Fabio Stucchi, Vasconcellos, Áurea Rosas, Luzzi, Roberto
Format: Article
Language:English
Subjects:
BOSE-EINSTEIN CONDENSATION
BOSONS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTROMAGNETIC RADIATION
MAGNETIC MATERIALS
MAGNONS
MATERIALS
QUASI PARTICLES
RADIATIONS
RADIOWAVE RADIATION
THIN FILMS
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Summary:We present an analysis of the emergence of a nonequilibrium Bose-Einstein-type condensation of magnons in radio-frequency pumped magnetic thin films, which has recently been experimentally observed. A complete description of all the nonequilibrium processes involved is given. It is demonstrated that the phenomenon is another example of the emergence of Bose-Einstein-type condensation in nonequilibrium many-boson systems embedded in a thermal bath, a phenomenon evidenced decades ago by the renowned late Herbert Froehlich.
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.82.140404