V. B. Cherepanov, I. V. Kolokolov, E. V. Podivilov, “The Berezinskii-Kosterlitz-Thouless transition and correlations in the <nobr>$XY$</nobr> kagomé antiferromagnet”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2001, Volume 74, Issue 12,Pages <nobr>674

This article is cited in 4 papers

CONDENSED MATTER

The Berezinskii-Kosterlitz-Thouless transition and correlations in the $XY$ kagomé antiferromagnet

V. B. Cherepanov^a, I. V. Kolokolov^b, E. V. Podivilov^c

^a Hummingberg Ltd., Toronto
^b G I. Budker Institute of Nuclear Physics, Siberian Branch of Russian Academy of Sciences, Novosibirsk
^c Institute of Automation and Electrometry, Siberian Branch of Russian Academy of Sciences, Novosibirsk

Abstract: The problem of the Berezinskii–Kosterlitz–Thouless transition in the highly frustrated $XY$ kagomé antiferromagnet is solved. The transition temperature is found. It is shown that the spin correlation function exponentially decays with distance even in the low-temperature phase, in contrast to the order parameter correlation function, which decays algebraically with distance.

PACS: 74.50.+r, 75.10.Hk, 75.50.Ee

Received: 20.11.2001

Language: English