The temperature-induced dimensional crossover present in the highly-anisotropic superconductor Bi2Sr2CaCu2O8 is experimentally shown to be affected by the external magnetic field. By studying the onset field for the resistivity H* as a function of the angle v between the (a,b) plane and the direction of the magnetic field, it is found that at low temperature the behavior is 2D, while it becomes 3D near T(c). In an intermediate range of temperature the dimensionality is magnetic-field dependent. The results are in good agreement with theoretical models that describe this superconductor as composed of a stack of superconducting slabs coupled via Josephson effect.
Giura, M., Fastampa, R., Marcon, R., Sarti, S., Silva, E. (1994). MAGNETIC-FIELD EFFECTS ON THE DIMENSIONAL CROSSOVER IN BI2SR2CACU2O8. PHYSICA. B, CONDENSED MATTER, 194, 2199-2200 [10.1016/0921-4526(94)91599-7].
MAGNETIC-FIELD EFFECTS ON THE DIMENSIONAL CROSSOVER IN BI2SR2CACU2O8
SILVA, Enrico
1994-01-01
Abstract
The temperature-induced dimensional crossover present in the highly-anisotropic superconductor Bi2Sr2CaCu2O8 is experimentally shown to be affected by the external magnetic field. By studying the onset field for the resistivity H* as a function of the angle v between the (a,b) plane and the direction of the magnetic field, it is found that at low temperature the behavior is 2D, while it becomes 3D near T(c). In an intermediate range of temperature the dimensionality is magnetic-field dependent. The results are in good agreement with theoretical models that describe this superconductor as composed of a stack of superconducting slabs coupled via Josephson effect.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
