2018/09/30 by Bela Bauer, Brendan P. Keller, Simon Trebst +1
Mathematics · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Fermi Gamma-ray Space Telescope #Fermi liquid theory #Gapless playback #Lattice (music) #Mathematics #Physics #Quantum many-body systems #Quantum mechanics #Quantum spin liquid #Spin (aerodynamics) #Spin polarization #Superconductivity #Symmetry (geometry) #Theoretical physics #Thermodynamics #Topological Materials and Phenomena #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.99.035155
published as Phys. Rev. B 99, 035155 (2019) · 12 pages + appendices; revised version accepted for publication in PRB
arxiv created 2019/01/16 · openalex publication_date 2019/01/28 · arxiv updated 2019/01/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
The theoretical description of non-Fermi liquids is among the most challenging questions in strongly correlated quantum matter. While there are many experimental candidates for such phases, few examples can be studied using controlled theoretical approaches. Here, we introduce a conceptual perspective to analytically describe the non-Fermi liquid physics of gapless spin liquids arising in a family of two- and three-dimensional kagome models. We first discuss a symmetry-protection mechanism that is responsible for the stability of the gapless phase. We then recast the two-dimensional kagome spin model as a chiral Kondo lattice model that can be tackled analytically using what is in a sense a generalization of coupled-wire constructions. We provide extensive numerical evidence for a gapless spin liquid in the two-dimensional kagome model and discuss generalizations to three dimensions.