Fig. 1: Frustrated Kitaev magnets—an emblematic model.
From: The nature of low-temperature spin-freezing in frustrated Kitaev magnets
a A schematic representation of a frustrated Kitaev magnet decorated on a honeycomb lattice with bond-dependent anisotropic exchange interactions. b The combined effect of crystal electric field (CEF) and spin-orbit coupling in the 4d5 and 5d5 based quantum magnets realizes a low-energy Jeff = 1/2 state, which has the potential to host Kitaev physics. c A schematic of the temperature dependence of magnetic susceptibility, depicting ZFC-FC splitting below the spin-glass temperature in the honeycomb material Li2RhO3 (reproduced with permission from ref. 44, ⓒ2017 American Physical Society). The inset shows a schematic representation of a free-energy landscape in a frustrated spin glass, where the solid lines correspond to possible free-energy configurations in zero-field cooling, while the dashed convex envelope represents the equilibrium free-energy configuration in the presence of a magnetic field.
