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RESEARCH PRODUCT
Macroscopic persistent currents in laser deposited YBa2Cu3O7 films
Paul LeidererRudolf FeileWilli ZanderJoachim FröhlingsdorfBernd Stritzkersubject
SuperconductivityLaser ablationMaterials scienceCondensed matter physicsEnergy Engineering and Power TechnologyNanotechnologySubstrate (electronics)Condensed Matter PhysicsLaserElectronic Optical and Magnetic MaterialsMagnetic fieldlaw.inventionlawElectromagnetic coilCondensed Matter::SuperconductivityCritical currentElectrical and Electronic Engineeringdescription
We have investigated persistent currents in a superconducting YBa2Cu3O7 ring of about 1 cm diameter, which was deposited as c-axis textured film on a SrTiO3 substrate by laser ablation. The currents were registered, via their magnetic field distribution, with a small vibrating pick-up coil. At 77 K persistent currents with negligible decay over 103 s have been observed below a critical current density jc=0.9×105 A/cm2, both for a field-cooled and a zero-field-cooled sample. This demonstrates that it is possible to fabricate dissipationless devices of such films on a relatively large scale.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1989-01-01 | Physica C: Superconductivity |