Theory of SU(2) invariant spin liquids on the triangular lattice with spinful Majorana excitations

ORAL

Abstract

We present a theory of SU(2) invariant spin liquids on the 2D spin 1/2 triangular lattice described by a parton representation of the spin in terms of spin-1 Majorana particles. These spin liquids break time reversal symmetry and generically possess a novel Fermi surface consisting of three lines intersecting at $k=0$ as well as an unconventional dynamic critical exponent $z=3$. We also present calculations for observable quantities and discuss possible connections to recent experiments involving spin 1/2 Heisenberg triangular lattices.

–

Authors

  • Rudro Biswas

    Department of Physics, Harvard University, Cambridge, Massachusetts 02138, Harvard

  • Liang Fu

    Harvard University, Harvard, Harvard Univ

  • Chris Laumann

    Harvard University, Harvard

  • Subir Sachdev

    Harvard University, Harvard, Harvard Univ., Physics Department, Harvard University, Cambridge, MA 02138, USA