Fig. 2: The temperature-field phase diagrams and thermal entropy curves.
From: Magnetocaloric effect of topological excitations in Kitaev magnets
a, c The contour plots of thermal entropies and schematic temperature-field phase diagrams for the FM and AF Kitaev models at finite fields down to T ≃ 0.008. There are different regimes in the phase diagram, i.e., the paramagnetic (PM), Kitaev fractional liquid (KFL), chiral spin liquid (CSL), and the polarized (PL) phase. The red dots on the horizontal axis denote the critical fields Bc ≃ 0.01838 for FM and Bc1 ≃ 0.2 and Bc2 ≃ 0.3633,38 for the AF cases, as obtained with DMRG calculations. The shaded cone emerging from Bc in a indicates the quantum critical regime. b, d The thermal entropy curves at various fields for the FM and AF Kitaev models, where the temperature scales TH, TL and \(T^{{\prime} }_{{{{\rm{L}}}}}\) are indicated by the black arrows. Source data are provided as a Source Data file.
