Magnetic order and spin fluctuations in low-dimensional insulating systems

A. A. Katanin, V. Yu Irkhin

Research output: Contribution to journalReview articlepeer-review

37 Citations (Scopus)

Abstract

The current theoretical and experimental situations are reviewed for low-dimensional insulating systems with a low magnetic transition temperature TM and pronounced short-range magnetic order above this temperature. Both the standard and self-consistent spin-wave theories are shown to be insufficient to quantitatively describe the experimental data on these systems. Field-theoretical approaches taking into account the contribution of the spin-fluctuation excitations (neglected in the spin-wave theories) to the thermodynamic properties of ferro- and antiferromagnets are discussed.

Original languageEnglish
Pages (from-to)613-635
Number of pages23
JournalPhysics-Uspekhi
Volume50
Issue number6
DOIs
Publication statusPublished - Jun 2007
Externally publishedYes

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