Mobile Vacancies in a Quantum Heisenberg Antiferromagnet
- 25 July 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 61 (4), 467-470
- https://doi.org/10.1103/physrevlett.61.467
Abstract
The ground state of a quantum vacancy in a 2D antiferromagnet is found to involve a long-range dipolar distortion of the staggered magnetization. An effective Hamiltonian of vacancies interacting with long-wavelength spin waves is derived. The implications for the anitferromagnetic long-range order are discussed.Keywords
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