2018/03/31 by Guang-Yu Sun, Guang Yu Sun, Yan-Cheng Wang +4 · 1 citation
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum many-body systems #Quantum mechanics #Spinon #Symmetry (geometry) #Symmetry breaking #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.121.077201
published as Phys. Rev. Lett. 121, 077201 (2018) · 8 pages,6 figures
arxiv created 2018/07/22 · openalex publication_date 2018/08/14 · arxiv updated 2018/08/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The nontriviality of quantum spin liquids (QSLs) typically manifests in the nonlocal observables that signify their existence; however, this fact actually casts a shadow on detecting QSLs with experimentally accessible probes. Here, we provide a solution by unbiasedly demonstrating a dynamical signature of anyonic excitations and symmetry fractionalization in QSLs. Employing large-scale quantum Monte Carlo simulation and stochastic analytic continuation, we investigate the extended XXZ model on the kagome lattice, and find out that, across the phase transitions from Z2 QSLs to different symmetry breaking phases, spin spectral functions can reveal the presence and condensation of emergent anyonic spinon and vison excitations, in particular, the translational symmetry fractionalization of the latter, which can be served as the dynamical signature of the seemingly ephemeral QSLs in spectroscopic techniques such as inelastic neutron or resonance (inelastic) x-ray scatterings.