Spin Wave Mediated Non-reciprocal Effects in Antiferromagnets

✍ Scribed by José Marı́a Román; Joan Soto

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 160 KB
• Volume: 273
• Category: Article
• ISSN: 0003-4916
• DOI: 10.1006/aphy.1998.5891

✦ Synopsis

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.