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RESEARCH PRODUCT
Flux-flow instability and heating effects in Bi2Sr2CaCu2O8 and YBa2Cu3O7 thin films
Zhili XiaoGerhard JakobH. AdrianPatrick Voss-de HaanMichael Wagnersubject
MicrosecondRange (particle radiation)Materials scienceCondensed matter physicsPhase (matter)QuasiparticleElectrical and Electronic EngineeringThin filmVorticityCondensed Matter PhysicsInstabilityElectronic Optical and Magnetic MaterialsVoltagedescription
Abstract We investigated current–voltage curves of Bi 2 Sr 2 CaCu 2 O 8 and YBa 2 Cu 3 O 7 thin films. Voltage jumps due to flux-flow instabilities at high vortex-velocities were found and interpreted in the framework of the theory of Larkin and Ovchinnikov. The extensions introduced by Bezuglyj et al. account for quasiparticle heating during the measurement. While in Bi 2 Sr 2 CaCu 2 O 8 the instability is found in the vortex-liquid phase, in YBa 2 Cu 3 O 7 we observed it in the vortex-glass phase. Moreover, we studied the temporal behavior of the instability in current–voltage curves with a time resolution in the microsecond range.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2000-07-01 | Physica B: Condensed Matter |