Spin-current State in Anisotropic Triangular Heisenberg Model

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1 Citation (Scopus)

Abstract

Stability of a spin-current state with respect to the ordinary magnetically disordered (paramagnetic) state is studied for an S=1/2 Heisenberg (J1-J2) model on an anisotropic triangular lattice in a magnetic field as a low-lying excited state as well as the ground state. We use a variational Monte Carlo method in computing expectation values. As a result, the spin-current state has an appreciably lower energy than that of the paramagnetic state for J1∼J2 (nearly isotropic) and 0.5 m 0.8 (m: magnetization), but in other areas, the energy gain is small if any, in contrast to a previous argument of Chubukov and Starykh for m ∼1/3.

Original languageEnglish
Pages (from-to)10-13
Number of pages4
JournalPhysics Procedia
Volume58
DOIs
Publication statusPublished - 2014 Jan 1
Event26th International Symposium on Superconductivity, ISS 2013 - Tokyo, Japan
Duration: 2013 Nov 182013 Nov 20

Keywords

  • Heisenberg model
  • anisotropic triangular lattice
  • magnetic field
  • spin current
  • staggered flux
  • variational Monte Carlo

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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