Dynamically Induced Alignment of Magnetic Domains in Type-I Superconductors

Vincent Jeudy (1) , Catherine Gourdon (1) , T. Okada

1 INSP - Institut des Nanosciences de Paris

Normal and superconducting state domains in a 10 µm thick indium slab are observed by the magneto-optical imaging technique. The sample is subjected to a magnetic field H with different sweeping rates H. The domain patterns are found to depend on the penetration regime of the magnetic flux. For the lowest sweeping rate (H=1 mT s−1), the domains are randomly oriented. For the highest sweeping rate (H =230 mT s−1) and sufficiently high H-values, the domains consist of a nearly straight laminar structure with a well-defined period, oriented perpendicularly to the edge of the sample. These first results open new perspectives for studying the dynamics of formation of magnetic domains.

Mots clés: type I superconductors; magnetic domains; magnetic flux

Vincent Jeudy, Catherine Gourdon, T. Okada. Dynamically Induced Alignment of Magnetic Domains in Type-I Superconductors. LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24, 2005, Orlando, United States. pp.985, ⟨10.1063/1.2355036⟩. ⟨hal-00016787⟩