Magnetic excitations in quasi-one-dimensional hexagonal ABX3-type antiferromagnets

✍ Scribed by T. Inami; K. Kakurai; H. Tanaka; M. Enderle; M. Steiner

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 197 KB
• Volume: 213-214
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(95)00093-o

✦ Synopsis

The magnetic excitations of three ABX3-type quasi-l-D AFs with half-integer spin values are studied. We show that magnetic excitations in S = ~2 systems in the ordered phase at low T are excellently described by the semi-classical linear spin-wave theory. In S = ~ systems however, non-linear terms due to quantum fluctuations are necessary to understand spin dynamics of the system at low T.