Antiferromagnetic Heisenberg model on anisotropic triangular lattice in the presence of magnetic field

Physics – Condensed Matter – Strongly Correlated Electrons

Scientific paper

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4 pages with 4 figures included

Scientific paper

10.1103/PhysRevB.66.172407

We use Schwinger boson mean field theory to study the antiferromagnetic spin-1/2 Heisenberg model on an anisotropic triangular lattice in the presence of a uniform external magnetic field. We calculate the field dependence of the spin incommensurability in the ordered spin spiral phase, and compare the results to the recent experiments in Cs$_{2}$CuCl$_{4}$ by Coldea et al. (Phys. Rev. Lett. 86, 1335 (2001)).

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