Filters








1 Hit in 0.038 sec

Local magnetism and spin dynamics of the frustrated honeycomb rhodate Li2RhO3

P. Khuntia, S. Manni, F. R. Foronda, T. Lancaster, S. J. Blundell, P. Gegenwart, M. Baenitz
2017 Physical review B  
We report magnetization, heat capacity, 7Li - nuclear magnetic resonance (NMR), and muSR (muon spin roration) measurements on the honeycomb 4d5 spin liquid candidate Li2RhO3. The magnetization in small magnetic fields provides evidence of the partial spin-freezing of a small fraction of Rh4+ -moments at 6 K, whereas the Curie-Weiss behavior above 100 K suggests a pseudo-spin-1/2 paramagnet with a moment of about 2.2 muB. The magnetic specific heat (Cm) exhibits no field dependence and
more » ... dence and demonstrates the absence of long range magnetic order down to 0.35 K. Cm/T passes through a broad maximum at about 10 K and Cm=T^2 at low temperatures. Measurements of the spin-lattice relaxation rate (1/T1) reveal a gapless slowing down of spin fluctuations upon cooling with 1/T1=T^2.2. The results from NMR and muSR are consistent with a scenario in which a minority of Rh4+ moments are in a ahort-range correlated frozen state and coexist with a majority of moments in a liquid-like state that continue to fluctuate at low temperatures.
doi:10.1103/physrevb.96.094432 fatcat:eug6o5fgmrgbbkiks4yqwzr7p4