Topological coupling of dislocations and magnetization vorticity in Spin Density Waves

1999/11/10 by S. Brazovski, Brazovski, S., N. Kirova +1
Materials Science · Physics and Astronomy · #Magnetic and transport properties of perovskites and related materials #Magnetic properties of thin films #Physics of Superconductivity and Magnetism #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.cond-mat/9911143

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

arxiv created 1999/11/10 · arxiv updated 2009/11/30

Abstract

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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