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Published November 1, 1988 | public
Journal Article Open

Simulation of vacancies in a two-dimensional Ising antiferromagnet


We present simulations of one- and two-vacancy states in a two-dimensional square-lattice Ising antiferromagnet. We find that the energy of the single-vacancy ground state scales as J2/3, where J is the spin-spin coupling. The S- and P-wave states of two vacancies are bound, with binding energy scrE∝J2/3 and J, respectively, while the D-wave state is unbound.

Additional Information

©1988 The American Physical Society Received 28 March 1988 The initial phase of this work benefited from S.E.K.'s interactions at the Aspen Center for Physics, with, among others, R. Bhatt, J. Hirsch, A. Ruckenstein, A.P. Young, and M.C. Cross; we thank the latter for his continuing interest in this project at Caltech. This work was supported in part by the National Science Foundation under Grant Nos. PHY86-04197 and PHY85-05682 and by supercomputer time granted by the San Diego Supercomputer Center.


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