Journ. Magnetism and Magnetic Materials
140­144, 1969­1970 (1995)

Abstract of the article

Soliton­magnon bound states in TMMC above and below TN

J.A. Hołyst 1,2 H. Benner 2
1 Institute of Physics, Warsaw Technical University, Koszykowa 75, 00-662 Warsaw, Poland
2 Institut für Festkörperphysik, Technische Hochschule Darmstadt, Hochschulstrasse 6, 64289 Darmstadt, Federal Republic of Germany

The problem of soliton-magnon bound states occuring in the quasi-one-dimensional antiferromagnet TMMC [(CH3)4NMnCl3] is studied. Above TN we found a bound state which is due to out-of-plane spin components when going beyond the sine-Gordon limit. Below TN we found a bound state which is originates from the pairing of ¶-kinks described by a double sine-Gordon equation.