Magnetic transition and spin dynamics in the triangular Heisenberg antiferromagnet alpha-KCrO2

We present the results of muon-spin relaxation measurements on the triangular lattice Heisenberg antiferromagnet α-KCrO2. We observe sharp changes in behavior at an ordering temperature of Tc=23 K, with an additional broad feature in the muon-spin relaxation rate evident at T=13 K, both of which cor...

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Bibliographic Details
Main Authors: Xiao, F, Lancaster, T, Baker, P, Pratt, F, Blundell, S, Moeller, J, Ali, N, Jansen, M
Format: Journal article
Language:English
Published: 2013
Description
Summary:We present the results of muon-spin relaxation measurements on the triangular lattice Heisenberg antiferromagnet α-KCrO2. We observe sharp changes in behavior at an ordering temperature of Tc=23 K, with an additional broad feature in the muon-spin relaxation rate evident at T=13 K, both of which correspond to features in the magnetic contribution to the heat capacity. This behavior is distinct from both the Li- and Na-containing members of the series. These data may be qualitatively described with the established theoretical predictions for the underlying spin system. © 2013 American Physical Society.