Spin-Charge Separation in Two-Dimensional Frustrated Quantum Magnets

2003/10/31 by Andreas M. Läuchli, A. Laeuchli, Didier Poilblanc +1 · 2 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Cold Atom Physics and Bose-Einstein Condensates #Physics of Superconductivity and Magnetism #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.92.236404

published as Phys. Rev. Lett. 92, 236404 (2004) · 4 pages, 6 figures

openalex publication_date 2004/06/10 · arxiv created 2004/06/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The dynamics of a mobile hole in two-dimensional frustrated quantum magnets is investigated by exact diagonalization techniques. Our results provide evidence for spin-charge separation upon doping the kagome lattice, a prototype of a spin liquid. In contrast, in the checkerboard lattice, a symmetry broken valence bond crystal, a small quasiparticle peak is seen for some crystal momenta, a finding interpreted as a restoration of weak holon-spinon confinement.

Citations

• Single-Particle Excitations in Magnetic Insulators

Cited by

• Enhanced Pairing in Doped Quantum Magnets with Frustrated Hole Motion
• Spin-charge bound states and emerging fermions in a quantum spin liquid

Related

• Frustrated Quantum Magnets
• Topological States of Matter in Frustrated Quantum Magnetism
• Magnetization plateaus in frustrated antiferromagnetic quantum spin models
• Mobile holes in frustrated quantum magnets and itinerant fermions on frustrated geometries
• Frustrated quantum magnets