Simple estimation of ground-state energy of antiferromagnets |
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| Authors: | I. Mayer S. Angelov |
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| Affiliation: | Central Research Institute for Chemistry, Hungarian Academy of Sciences, H-1525 Budapest, P.O. Box 17, Hungary;Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1040 Sofia, Bulgaria |
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| Abstract: | A simple model describing the admixture of an isolated singlet coupled pair of spins to the fully ordered Néel state of a two-lattice antiferromagnet is utilized in order to obtain an estimation (from below) of the ground-state energy. |
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