Kinematic Effects in Spin-½ Antiferromagnetism
- 10 July 1967
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 159 (2) , 430-438
- https://doi.org/10.1103/physrev.159.430
Abstract
A coupled-fermion representation of spin operators is used to examine the effect of the kinematic interaction on the zero-point motion of a spin-½ antiferromagnet. The calculation is carried through fourth order so that exchange corrections are included. It is shown that the kinematic interaction is not small, but that the combined kinematic-dynamic corrections to the spin-wave theory are small, numerical calculations showing a correction of less than 1% of the spin-wave values.Keywords
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