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VOLUME 74 | ISSUE 12 | PAGE 674
The Berezinskii-Kosterlitz-Thouless transition and correlations in the XY kagomé antiferromagnet
V. B. Cherepanov, I. V. Kolokolov+, E. V. Podivilov*
Hummingberg Ltd., Toronto, Ontario, Canada M2H 2S6, [3mm] +Budker Institute of Nuclear Physics, 630090 Novosibirsk, Russia
*Institute of Automation and Electrometry RAS, 630090 Novosibirsk, Russia


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


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