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cond-mat.str-el2004
Diluted planar ferromagnets: nonlinear excitations on a non-simply connected manifold
Fagner M. Paula, Afranio R. Pereira, Lucas A. S. Mól
We study the behavior of magnetic vortices on a two-dimensional support manifold being not simply connected. It is done by considering the continuum approach of the XY-model on a p…
cond-mat.str-el2002
Oscillating Solitons Pinned to a Nonmagnetic Impurity in Layered Antiferromagnets
L. A. S. Mól, A. R. Pereira, W. A. Moura-Melo
We argue that an oscillatory motion of impurity-pinned solitons may occur in layered antiferromagnetic compounds. The characteristic frequencies of these modes, that may be detecte…