Correlations in an extended Hubbard model with Ising-like interaction

  • Robertson C. Esperanza National Institute of Physics, University of the Philippines Diliman
  • Francis N. C. Paraan National Institute of Physics, University of the Philippines Diliman
Keywords: Correlation functions, extended Hubbard model, DMRG

Abstract

Density-density and spin-spin correlations are calculated in an extended Hubbard model with an intersite Ising-like interaction. Local expectation values and correlation functions involving charge density and magnetization are obtained using the density matrix renormalization group (DMRG) for a periodic chain of L = 10 sites at half-filling. Antiferromagnetic phases with spin and charge density modulation are identified and located in a phase diagram.

Published
2017-05-13
Section
Poster Session B (Complex Systems, Simulations, and Theoretical Physics)