The one-dimensional classical planar antiferromagnet in an applied magnetic field in the plane of the planar spin is analyzed theoretically. Solving the transfer matrix equation, we calculate the transverse and the longitudinal spin correlation lengths. The dynamical structure factors are also determined. The transverse spin fluctuations are dominated by the multisoliton term, while the longitudinal spin fluctuations are dominated by a single magnon term.
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This work was supported in part by the National Science Foundation under grant DMR 76-21032.
Guggenheim Fellow 1979-80. On sabbatical leave from Department of Physics, University of Southern California, Los Angeles California.
Laboratoire associé au CNRS.
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Kazumi, M. Solitons in the one-dimensional antiferromagnet in a magnetic field. J Low Temp Phys 41, 327–337 (1980). https://doi.org/10.1007/BF00117944
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DOI: https://doi.org/10.1007/BF00117944