Recently the Honeycomb lattice Li2RuO3 has attracted considerable attention in condensed matter physics both in experimentally and theoretically due to the structural phase transition near 550K (high temperature S.G. C2/m to the low temperature S.G. P21/m) associated with the metal-insulator transition and also the spin-singlet formation (below 550K). The Honeycomb layered structure of Li2RuO3 is an ideal realization of the Kiteave model. Besides its importance in the fundamental physics, Li2RuO3 has also importance for the Li-battery technology as it is a potential battery cathode material due to its better electrochemical performance. We have investigated two samples of Li2RuO3 using neutron diffraction, inelastic neutron scattering, magnetization, heat capacity and muon spin rotation measurements. Our study shows the presence of new low energy excitations in one of the Li2RuO3 samples, which we attribute due to the disorder between Ru and Li sites.
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