Topological coupling of dislocations and magnetization vorticity in Spin Density Waves

Details Topological coupling of dislocations and magnetization vorticity in Spin Density Waves Topological coupling of dislocations and magnetization vorticity in Spin Density Waves

1999-11-10

arxiv.org/abs/cond-mat/9911143v1

Physics

Condensed Matter

Strongly Correlated Electrons

To be published in Proceedings of ECRYS-99, J. de Physique, Coll., December 1999. http://ipnweb.in2p3.fr/~lptms/membres/brazov

Scientific paper

The rich order parameter of Spin Density Waves allows for an unusual object of a complex topological nature: a half-integer dislocation combined with a semi-vortex of the staggered magnetization. It becomes energetically preferable to ordinary dislocation due to enhanced Coulomb interactions in the semiconducting regime. Generation of these objects changes the narrow band noise frequency.

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