Exact spectra, spin susceptibilities, and order parameter of the quantum Heisenberg antiferromagnet on the triangular lattice

Bernu, B.; Lecheminant, P.; Lhuillier, C.; Pierre, L.

doi:10.1103/physrevb.50.10048

Public

Exact spectra, spin susceptibilities, and order parameter of the quantum Heisenberg antiferromagnet on the triangular lattice

Published in Physical review. B, Condensed matter • Oct 1, 1994

Authors:

B. Bernu

P. Lecheminant

C. Lhuillier

Abstract

Exact spectra of periodic samples are computed up to N=36. Evidence of an extensive set of low-lying levels, lower than the softest magnons, is exhibited. These low-lying quantum states are degenerated in the thermodynamic limit; their symmetries and dynamics as well as their finite-size scaling are...

Subject

Antiferromagnetism

Spins

Magnon

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