Cookies

We use cookies to ensure that we give you the best experience on our website. You can change your cookie settings at any time. Otherwise, we'll assume you're OK to continue.

Durham University

Department of Physics

Staff profile

Publication details for Professor Tom Lancaster

Khuntia, P., Manni, S., Foronda, F. R., Lancaster, T., Blundell, S. J., Gegenwart, P. & Baenitz, M. (2017). Local magnetism and spin dynamics of the frustrated honeycomb rhodate Li2RhO3. Physical Review B 96(9): 094432.

Author(s) from Durham

Abstract

We reportmagnetization, heat capacity, 7Li nuclear magnetic resonance (NMR), and muon-spin rotation (μSR)
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 2.2μB. The magnetic
specific heat (Cm) exhibits no field dependence 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 μSR are consistent with a scenario in which a minority of
Rh4+ moments are in a short-range correlated frozen state and coexist with a majority of moments in a liquid-like
state that continue to fluctuate at low temperatures.