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Prog. Theor. Phys. Vol. 63 No. 6 (1980) pp. 2115-2118
Letters
Magnetization Reversal of the Two-Dimensional Heisenberg Ferromagnet with Weak Ising Anisotropy
Makio Uwaha
Department of Physics, Nagoya University, Nagoya 464
(Received February 21, 1980)
Abstract:
Fluctuations related to the Belavin-Polyakov pseudoparticle play an important role in the decay of the metastable state, where external field reverse to the spontaneous magnetization is applied. The energy at the saddle point is of the order of the exchange constant unless the external field is much weaker than the anisotropy.
URL :
http://ptp.ipap.jp/link?PTP/63/2115/
DOI : 10.1143/PTP.63.2115
References:
- A. A. Belavin and A. M. Polyakov, Pis'ma Zh. Eksp. i Teor. Fiz. 22 (1975), 503 [Sov. Phys. -JETP Lett. 22 (1975), 245].
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R. A. Pelcovits and D. R. Nelson, Phys. Lett. A 57 (1976), 23[CrossRef].
J. M. Kosterlitz and D. J. Thouless, in Progress in Low Temperature Physics, edited by D. F. Brewer (North-Holland, 1978), vol. VIIB.
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For a general theory see, J. S. Langer, Ann. of Phys. 54 (1969), 258[CrossRef].
- See, e.g., B. V. Petukhov and V. L. Pokrovskii, Zh. Eksp. i Teor. Fiz. 63 (1972), 634 [Sov. Phys. -JETP 36 (1973), 336].
- J. R. Dillon, in Magnetism, edited by G. T. Rado and H. Suhl (Academic Press, 1963), vol. III.
