Angular dependence of critical currents in Bi2Sr2CaCu2O8 thin films predominant role of the transverse magnetic field component - Laboratoire de Physique des Solides d'Orsay
Article Dans Une Revue Physica C: Superconductivity and its Applications Année : 1992

Angular dependence of critical currents in Bi2Sr2CaCu2O8 thin films predominant role of the transverse magnetic field component

Résumé

We have studied the critical current of c-axis oriented Bi2Sr2CaCu208 thin films measured at various temperatures as a function of magnitude (H_< 20 T) and orientation 0 (with respect to the c-axis) of the applied magnetic field. The curves J¢ (0) at a given field H show a strong maximum when H is parallel to the CuO2 planes (0=90 ° ). For 0¢90 °, we show that J¢ depends only on the component of the magnetic field along the c direction in the whole temperature range. In particular, at 4.2 K, J~(H, O) behaves as [Hcos 01 -'~ with 0.44-< a < 0.5. These results agree with the recent scaling theory proposed by Blaner et aL describing the behaviour of anisotropic superconductors for an arbitrary angle between the magnetic field and the anisotropic crystallographic axis.

Dates et versions

hal-04173597 , version 1 (29-07-2023)

Identifiants

Citer

S. Labdi, H. Raffy, O. Laborde, P. Monceau. Angular dependence of critical currents in Bi2Sr2CaCu2O8 thin films predominant role of the transverse magnetic field component. Physica C: Superconductivity and its Applications, 1992, 197 (3-4), pp.274-282. ⟨10.1016/0921-4534(92)90010-a⟩. ⟨hal-04173597⟩
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