Amperean Pairing Instability in the U(1) Spin Liquid State with Fermi Surface and Application toκ−(BEDT−TTF)2Cu2(CN)3

2006/07/01 by Sung-Sik Lee, Patrick A. Lee, T. Senthil · 9 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Algorithm #Computer science #Condensed matter physics #Fermi liquid theory #Fermi surface #Organic and Molecular Conductors Research #Pairing #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum mechanics #Spin (aerodynamics) #Spinon #State (computer science) #Superconductivity #Thermodynamics #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.98.067006

published as Phys. Rev. Lett. 98, 067006 (2007) · 4+ pages, 1 fig

arxiv created 2006/07/01 · openalex publication_date 2007/02/08 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Recent experiments on the organic compound \ensuremathκ\mathrm\text\ensuremath-(BEDT\mathrm\text\ensuremath-TTF)₂Cu₂(CN)₃ raise the possibility that the system may be described as a quantum spin liquid. Here we propose a pairing state caused by the ``Amperean'' attractive interaction between spinons on a Fermi surface mediated by the U(1) gauge field. We show that this state can explain many of the observed low temperature phenomena and discuss testable consequences.

Citations

• On the ground state properties of the anisotropic triangular antiferromagnet
• Mott Transition from a Spin Liquid to a Fermi Liquid in the Spin-Frustrated Organic Conductorκ−(ET)2Cu2(CN)3
• U(1) Gauge Theory of the Hubbard Model: Spin Liquid States and Possible Application toκ−(BEDT−TTF)2Cu2(CN)3
• Spin Liquid State in an Organic Mott Insulator with a Triangular Lattice
• Nonmagnetic Insulating States near the Mott Transitions on Lattices with Geometrical Frustration and Implications for κ-(ET)2Cu2(CN)3

Cited by

• Probing the Mott physics inκ-(BEDT-TTF)2X salts via thermal expansion
• Molecular quantum materials: electronic phases and charge dynamics in two-dimensional organic solids
• Gapless excitations in the ground state of 1T−TaS2
• Insulator-metal transition on the triangular lattice
• Critical role of the sign structure in the doped Mott insulator: Luther-Emery versus Fermi-liquid-like state in quasi-one-dimensional ladders
• Spin liquid state in the disordered triangular latticeSc2Ga2CuO7revealed by NMR
• Spin-liquid and magnetic phases in the anisotropic triangular lattice: The case ofκ−(ET)2X
• Detecting spin fractionalization in a spinon Fermi surface spin liquid
• Quantum spin liquid states