Thermodynamics of quantum layered magnets with a weak easy-axis anisotropy

V. Yu Irkhin, A. A. Katanin

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


The O(N) model of quantum two-dimensional antiferro-and ferromagnets with a weak easy-axis anisotropy is considered. Analytical results for the temperature dependence of sublattice magnetization and ordering point are obtained. The temperature renormalization of the anisotropy parameter is investigated. The case where a small interlayer coupling is present is also discussed. The results are in good agreement with experimental data on the layered perovskites K2NiF4 and Rb2NiF4.

Original languageEnglish
Pages (from-to)143-148
Number of pages6
JournalPhysics Letters A
Issue number1-2
Publication statusPublished - 21 Jul 1997
Externally publishedYes


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