Magnetic transition and spin dynamics in the triangular Heisenberg antiferromagnet $\alpha$-KCrO${}_2$

Abstract

We present the results of muon-spin relaxation measurements on the triangular lattice Heisenberg antiferromagnet $\alpha$-KCrO${}_2$. We observe sharp changes in behaviour at an ordering temperature of $T_{\mathrm{c}}=23$ 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 behaviour 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.

References in corpus (5)

• Unconventional Dynamics in Triangular Heisenberg Antiferromagnet NaCrO2
• Z_2-vortex ordering of the triangular-lattice Heisenberg antiferromagnet
• Z2-vortex order of frustrated Heisenberg antiferromagnets in two dimensions
• Spin dynamics and spin freezing in the triangular lattice antiferromagnets FeGa2S4 and NiGa2S4
• Spin dynamics in Heisenberg triangular antiferromagnets: A muSR study of LiCrO2

Cited by in corpus (6)

• Spin current as a probe of the ${\mathbb{Z}}_2$-vortex topological transition in the classical Heisenberg antiferromagnet on the triangular lattice
• Local magnetism, magnetic order and spin freezing in the 'nonmetallic metal' FeCrAs
• Observation of topological $Z_2$ vortex fluctuations in the frustrated Heisenberg magnet NaCrO${}_2$
• Stacking-induced magnetic frustration and spiral spin liquid
• Magnetic order, spin waves and fluctuations in the triangular antiferromagnet La2Ca2MnO7
• Universal fluctuating regime in triangular chromate antiferromagnets