6533b829fe1ef96bd128aca4

RESEARCH PRODUCT

Irreversibility of the threshold field for dendritic flux avalanches in superconductors

J. I. VestgårdenK. EliassenAtle Jorstad QvillerTom H. JohansenKartik SenapatiV. V. YurchenkoM. R. NevalaR. C. BudhaniIlari Maasilta

subject

SuperconductivityPhysicsField (physics)Condensed matter physicsEnergy Engineering and Power TechnologyFluxCondensed Matter PhysicsInstabilityMagnetic fluxElectronic Optical and Magnetic MaterialsHysteresisLower thresholdCondensed Matter::SuperconductivityElectrical and Electronic Engineering

description

Hysteretic effects are seen in the upper and lower threshold fields for the appearance of dendritic flux instabilities, first explained in Yurchenko et al. [Phys. Rev. B 76 (2007) 092504], in NbN-films. We have measured the threshold fields at increasing and decreasing applied fields at different temperatures and proposed a mechanism explaining how the hysteresis arises by analyzing the field profiles inside the sample.

yearjournalcountryeditionlanguage
2010-10-01Physica C: Superconductivity
https://doi.org/10.1016/j.physc.2010.02.066