Exact Chiral Spin Liquid with Stable Spin Fermi Surface on the Kagome Lattice

Abstract

We study an exactly solvable quantum spin model of Kitaev type on the kagome lattice. We find a rich phase diagram which includes a topological (gapped) chiral spin liquid with gapless chiral edge states, and a gapless chiral spin liquid phase with a spin Fermi surface. The ground state of the current model contains an odd number of electrons per unit cell, which qualitatively distinguishes it from previously studied exactly solvable models with a spin Fermi surface. Moreover, we show that the spin Fermi surface is stable against weak perturbations.

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Document Details

Document Type
Technical Report
Publication Date
May 17, 2011
Accession Number
ADA578005

Entities

People

  • Gregory A. Fiete
  • Hong Yao
  • Victor Chua

Organizations

  • University of Texas at Austin

Tags

DTIC Thesaurus Topics

  • Band Structures
  • Boundaries
  • Brillouin Zones
  • Electrons
  • Fermi Surfaces
  • Geometry
  • Ground State
  • Hilbert Space
  • Liquid Phases
  • Liquids
  • Mott Insulators
  • Phase
  • Phase Diagrams
  • Physical Properties
  • Quantum Properties
  • Triangles
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene
  • Quantum Computing