Accession Number:

ADA578005

Title:

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

Descriptive Note:

Journal article

Corporate Author:

TEXAS UNIV AT AUSTIN DEPT OF PHYSICS

Personal Author(s):

• Chua, Victor
• Yao, Hong
• Fiete, Gregory A.

Report Date:

2011-05-17

Pagination or Media Count:

7.0

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.

Descriptors:

• *FERMI SURFACES
• *LIQUIDS
• GROUND STATE
• PERTURBATIONS
• QUANTUM THEORY
• TOPOLOGY

Subject Categories:

• Crystallography
• Quantum Theory and Relativity
• Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE