Low Temperature Physics: 33, 948 (2007); https://doi.org/10.1063/1.2747071 (4 pages)
Fizika Nizkikh Temperatur: Volume 33, Number 11 (November 2007), p. 1248-1252    ( to contents , go back )

Re-distribution (condensation) of magnons in a ferromagnet under pumping

A.A. Zvyagin

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Lenin Ave., Kharkov 61103, Ukraine
E-mail: zvyagin@ilt.kharkov.ua
pos Анотація:

Received April 20, 2007


Last years several experiments were performed, which studied the Bose-Einstein condensation of quasi-particles, in particular, magnons in magnetically ordered systems. Recently the Bose-Einstein condensation of magnons was observed at room temperatures in a ferromagnetic film. The theory of the condensation (re-distribution) of magnons under the conditions of pumping, which explains many features of that experiment, is presented. The use of the term «Bose-Einstein condensation of magnons» is discussed.

PACS: 03.75.Nt Other Bose-Einstein condensation phenomena;
PACS: 75.45.+j Macroscopic quantum phenomena in magnetic systems;
PACS: 76.50.+g Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance.

Key words: condensation of magnons, parametric pumping.

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