Susceptibility of a spinon Fermi surface coupled to a U(1) gauge field

Abstract

We study the theory of a U(1) gauge field coupled to a spinon Fermi surface. Recently this model has been proposed as a possible description of the organic compound $\kappa -(BEDT-TTF{)}_{2}C{u}_2(CN{)}_3$. We calculate the susceptibility of this system and in particular examine the effect of pairing of the underlying spin liquid. We show that this proposed theory is consistent with the observed susceptibility measurements.

arXiv comment5 pages, 4 figures

References in corpus (7)

• Spin Liquid State in an Organic Mott Insulator with Triangular Lattice
• Variational study of triangular lattice spin-1/2 model with ring exchanges and spin liquid state in κ-(ET)_2 Cu_2 (CN)_3
• U(1) Gauge Theory of the Hubbard Model : Spin Liquid States and Possible Application to k-(BEDT-TTF)_2 Cu_2 (CN)_3
• Interior Gap Superfluidity
• Low Energy Dynamics of the Spinon-Gauge System
• Gauge-invariant response functions of fermions coupled to a gauge field
• Amperean Pairing Instability in the U(1) Spin Liquid State with Fermi Surface and Application to $\kappa -(BEDT-TTF{)}_{2}C{u}_2(CN{)}_3$

Cited by in corpus (9)

• Pressure-Tuned Exchange Coupling of a Quantum Spin Liquid in the Molecular Triangular Lattice $\kappa$-(ET)${}_2$Ag${}_2$(CN)${}_3$
• Spin liquids in geometrically perfect triangular antiferromagnets
• Transport Properties of a spinon Fermi surface coupled to a U(1) gauge field
• Detecting spin fractionalization in a spinon Fermi surface spin liquid
• Magnetic impurity in a $U(1)$-Spin Liquid with a Spinon Fermi-Surface
• Magnetic Impurity as a Local Probe of the U(1) Quantum Spin Liquid with Spinon Fermi Surface
• Competing quantum spin liquids, gauge fluctuations, and anisotropic interactions in a breathing pyrochlore lattice
• Impurities in triangular lattice spin 1/2 antiferromagnet
• Thermodynamic signatures of a fractionalized Fermi liquid