We present an experimental study of the dimensional crossover present in the extremely anisotropic superconductor Bi2Sr2CaCu2O8+x by means of measurements of the onset field for the dissipation H* as a function of the temperature and of the orientation theta between the field direction and the a, b plane. The crossover is experimentally shown to depend on the strength of the applied magnetic field in a narrow temperature range below T(c). The entire set of experimental data is described by a coupled-layers model, in which a decoupling can be induced by a sufficiently high magnetic field. The anisotropy ratio is found to depend strongly on the temperature and the model of coupled slabs of finite thickness quantitatively describes the data.
Sarti, S., Silva, E., Fastampa, R., Giura, M., Marcon, R. (1994). EXPERIMENTAL-STUDY OF THE DIMENSIONALITY IN BI2SR2CACU2O8+X - TEMPERATURE AND MAGNETIC-FIELD DEPENDENCE. PHYSICAL REVIEW. B, CONDENSED MATTER, 49(1), 556-562 [10.1103/PhysRevB.49.556].
EXPERIMENTAL-STUDY OF THE DIMENSIONALITY IN BI2SR2CACU2O8+X - TEMPERATURE AND MAGNETIC-FIELD DEPENDENCE
SILVA, Enrico;
1994-01-01
Abstract
We present an experimental study of the dimensional crossover present in the extremely anisotropic superconductor Bi2Sr2CaCu2O8+x by means of measurements of the onset field for the dissipation H* as a function of the temperature and of the orientation theta between the field direction and the a, b plane. The crossover is experimentally shown to depend on the strength of the applied magnetic field in a narrow temperature range below T(c). The entire set of experimental data is described by a coupled-layers model, in which a decoupling can be induced by a sufficiently high magnetic field. The anisotropy ratio is found to depend strongly on the temperature and the model of coupled slabs of finite thickness quantitatively describes the data.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
