Variational Monte Carlo Study of Heisenberg Model in Honeycomb Lattice with Six Spin Interactions

ORAL

Abstract

We investigate the possible nature of the spin liquid phase proposed by Quantum Monte Carlo simulation on the Hubbard model in a Honeycomb lattice. We consider the effective spin half Heisenberg model including the nearest neighbors, next nearest neighbors and six sites exchange interactions. Variational Monte Carlo simulations are performed by using the Gutzwiller projected BCS or resonating valence bond wavefunction. Different kind of symmetries (s,p+ip,d,d+id) in the pairing function are considered in order to investigate the effects of higher order exchange interactions.

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Authors

  • Niladri Sengupta

    Louisiana State University

  • Sandeep Pathak

    UC Santa Cruz

  • Ka-Ming Tam

    Louisiana State University, Department of Physics and Astronomy, Louisiana State University

  • Juana Moreno

    Louisiana State University, Louisiana State University, Baton Rouge, LA

  • Mark Jarrell

    Louisiana State University, Department of Physics and Astronomy, Center for Computation and Technology, Louisiana State University, Louisiana State University, Baton Rouge, LA