Current-driven transformations of the intermediate state patterns in type-I superconductors

Abstract

Dynamic structure of the intermediate state was studied in pinning-free thick Pb strips using real-time magneto-optical visualization. It is found that topological hysteresis can be lifted by applying sufficiently large current. Namely, laminar structure that appears on flux exit in a static case is turned into tubular when the sufficiently large transport current is present. Size and distribution of the flux tubes in static and dynamic regimes are different. Temperature, magnetic field and current phase diagram is discussed.

video showing effect of transport current on the laminar structure can be found here: http://cmp.ameslab.gov/supermaglab/video/Pb_current.html

References in corpus (4)

• The Suprafroth (Superconducting Froth)
• Equilibrium topology of the intermediate state in type-I superconductors of different shapes
• Topological Hysteresis in the Intermediate State of Type-I Superconductors
• The Shapes of Flux Domains in the Intermediate State of Type-I Superconductors

Cited by in corpus (6)

• Soft vortex matter in a type-I/type-II superconducting bilayer
• Confinement effects on intermediate state flux patterns in mesoscopic type-I superconductors
• Current-induced self-organisation of mixed superconducting states
• The role of temperature in the magnetic irreversibility of type-I Pb superconductors
• Magnetic field dependence of the quantum tunneling of normal-superconductor interfaces in a type-I Pb superconductor
• Controlled Manipulation of Intermediate State in a Type-I Superconductor