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Spin dynamics in Heisenberg triangular antiferromagnets: A<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>μ</mml:mi><mml:mtext>SR</mml:mtext></mml:mrow></mml:math>study of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>LiCrO</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>
We report a $\ensuremath{\mu}\text{SR}$ study of ${\text{LiCrO}}_{2}$, which has a magnetic lattice made up of a stacking of triangular Heisenberg antiferromagnetic (${\text{Cr}}^{3+}$, $S=3/2$) layers. A static magnetically ordered state is observed below the transition temperature ${T}_{N}=62\text{ }\text{K}$, while the expected peak of the relaxation rate is slightly shifted downward by …