Physics – Condensed Matter
Scientific paper
1997-09-26
Ann. Phys. 273 (1999) 37
Physics
Condensed Matter
Latex file, 22p . Published version
Scientific paper
10.1006/aphy.1998.5891
By using an effective field theory for the electromagnetic interaction of spin waves, we show that, in certain antiferromagnets, the latter induce non-reciprocal effects in the microwave region, which should be observable in the second harmonic generation and produce gyrotropic birefringency. We calculate the various (non-linear) susceptibilities in terms of a few parameters the order of magnitude of which is under control.
Roman Jose Maria
Soto Joan
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