J. Phys. IV France
Volume 10, Numéro PR3, March 2000
Organic Superconductivity "20th Anniversary"
Page(s) Pr3-183 - Pr3-189
Organic Superconductivity "20th Anniversary"

J. Phys. IV France 10 (2000) Pr3-183-Pr3-189

DOI: 10.1051/jp4:2000320

Topological defects in spin density waves

N. Kirova and S. Brazovskii

Laboratoire de Physique Théorique et des Modèles Statistiques, CNRS, bâtiment 100, Université Paris-Sud, 91405 Orsay Cedex, France e-mail : &

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 e.g. the narrow band noise frequency.

© EDP Sciences 2000