2015/06/04 by Joji Nasu, Yukitoshi Motome · 38 citations
Mathematics · Physics and Astronomy · #Abelian group #Advanced Condensed Matter Physics #Condensed matter physics #Mathematical physics #Mathematics #Physics #Physics of Superconductivity and Magnetism #Pure mathematics #Quantum #Quantum electrodynamics #Quantum mechanics #Spin (aerodynamics) #Theoretical and Computational Physics #Theoretical physics #Thermodynamics #Topological quantum computer #cond-mat.stat-mech #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.115.087203
published in Physical Review Letters 115(8), 087203 (American Physical Society) · 5 pages, 4 figures
arxiv created 2015/06/04 · openalex publication_date 2015/08/21 · arxiv updated 2015/08/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Thermodynamic properties of chiral spin liquids are investigated for a variant of the Kitaev model defined on a decorated honeycomb lattice. Using the quantum Monte Carlo simulation, we find that the model exhibits a finite-temperature phase transition associated with the time reversal symmetry breaking, in both topologically trivial and nontrivial regions. Numerical results for the Chern number and the thermal Hall conductivity indicate that the phase transition changes from a continuous to a discontinuous transition as we vary the coupling constants to reach the non-Abelian phase coming from the Abelian phase of the model. In addition, we find as a diagnostic of the chiral spin liquids, successive crossovers with multistage entropy release above the critical temperature, which indicates that the hierarchical fractionalization of a quantum spin occurs differently between the two regions.