Finite temperature properties of the spin-1/2 Heisenberg Antiferromagnet on the triangular Lattice

N. Elstner, R. R. P. Singh and A.P. Young
Phys. Rev. Lett. 71, 1629 (1993)

Abstract
We have studied the spin-$1\over 2$ Heisenberg antiferromagnet on the triangular lattice by high temperature series expansions. From an analysis of the antiferromagnetic structure factor and correlation length, we deduce that the ground state has small but non-zero long range antiferromagnetic order. We also determine the temperature dependence of the uniform susceptibility and the specific heat.

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