2D Kagomé ordering in the 3D frustrated spinel Li2Mn2O4

Muon spin relaxation (μSR) experiments on the geometrically frustrated spinel oxide, Li2Mn2O4, show the development of spin correlations over a range of lengthscales with decreasing temperature. Increased relaxation below ~150 K is consistent with the onset of spin correlations. Below 50 K, spin order, on a lengthscale which is long range for the μSR probe, appears abruptly in temperature, consistent with prior neutron diffraction results. The …