The observed properties of the higher-spin analogs of the lanthanum cuprates motivate a study of charge carriers in a classical two-dimensional antiferromagnet. Even for classical spins there is a remarkable dependence on the position of the carrier wave vector in the magnetic Brillouin zone. At the zone center, there is a tendency toward ferromagnetic alignment of the spins, while at the zone boundary this tendency is suppressed and a more complex spin polaron can be formed.

• Received 24 August 1992

DOI:https://doi.org/10.1103/PhysRevB.47.8124