The dynamical longitudinal correlation function of the Heisenberg model at low temperatures

The dynamical longitudinal correlation function of the low-temperature Heisenberg ferromagnet is studied in the collisionless regime. Taking into account the kinematical effects, a kinetic equation is derived in this regime describing the system only in terms of interacting spin-waves. The corresponding effective potential is shown to be too weak to support the existence of a high-frequency collective mode (zero magnon).

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Year of publication:	1975
Authors:	Dewel, G.
Published in:	Physica A: Statistical Mechanics and its Applications. - Elsevier, ISSN 0378-4371. - Vol. 82.1975, 3, p. 365-388
Publisher:	Elsevier

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Type of publication:	Article
Source:	RePEc - Research Papers in Economics

Persistent link: https://www.econbiz.de/10010584557