Switchable collective pinning of flux quanta using magnetic vortex arrays

Abstract

We constructed a superconducting/ferromagnetic hybrid system in which the ordering of the pinning potential landscape for flux quanta can be manipulated. Flux pinning is induced by an array of magnetic nanodots in the magnetic vortex state, and controlled by the magnetic history. This allows switching on and off the collective pinning of the flux-lattice. In addition, we observed field-induced superconductivity that originates from the annihilation of flux quanta induced by the stray fields from the magnetic vortices.

PDF file 18 pages including 5 figures, accepted for publication in Phys. Rev. B

References in corpus (7)

• Observation of Vortex Pinning in Bose-Einstein Condensates
• Magnetic Fingerprints of sub-100 nm Fe Nanodots
• Realizing Colloidal Artificial Ice on Arrays of Optical Traps
• Commensurability effects in superconducting Nb films with quasiperiodic pinning arrays
• Tunable pinning in superconducting films with magnetic micro-loops
• Tunable Field Induced Superconductivity
• Creation and pinning of vortex-antivortex pairs

Cited by in corpus (8)

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• Unusual magneto-transport of YBa2Cu3O7-d films due to the interplay of anisotropy, random disorder and nanoscale periodic pinning
• Self organized mode locking effect in superconductor / ferromagnet hybrids
• Direct visualization of magnetic vortex pinning in superconductors
• Effective penetration length and interstitial vortex pinning in superconducting films with regular arrays of defects
• Controllable manipulation of superconductivity using magnetic vortices
• Superconducting film with randomly magnetized dots: A realization of the 2D XY model with random phase shifts