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Temperature dependence of the magnetic susceptibility for triangular-lattice antiferromagnets with spatially anisotropic exchange constants
We present the temperature dependence of the uniform susceptibility of spin-half quantum antiferromagnets on spatially anisotropic triangular lattices, using high-temperature series expansions. We consider a model with two exchange constants ${J}_{1}$ and ${J}_{2}$ on a lattice that interpolates between the limits of a square lattice $({J}_{1}=0)$, a triangular lattice $({J}_{2}={J}_{1})$, …