Measurement of fluctuation-induced diamagnetism in BSCCO-2212 single crystals using magneto-optics

Intrinsic c - Axis Transport in 2212 - BSCCO

We describe two experimental approaches to circumvent the problem of self-heating in IV measurements on small mesa samples of 2212-BSCCO. Simultaneous dc and temperature measurements have been performed, allowing corrections for heating to be made. Short pulse measurements have also been made, where the IV characteristics and the mesa temperature can be measured on a µs timescale enabling intri...

Nonlinear Microwave Switching Response of Bscco Single Crystals

Measurements of the surface impedance, Zs, in Bi 2 Sr 2 Ca 1 Cu 2 O 8+ single crystal with microwave currents owing along the ^ c axis show clear evidence of a step-like nonlinearity. The surface resistance switches between apparently quantized levels for microwave eld strength changes of less than 1 mG. This non-linear response can arise from the presence of intrinsic Josephson junctions along...

Apparent Universal Behavior of Fluctuation-Induced Diamagnetism in Superconductors

Quasiparticle Tunnelling and Field-Dependent Critical Current in 2212- BSCCO

Intrinsic c-axis tunnelling in the superconducting state has been measured in zero and finite fields in small mesa structures fabricated on the surface of 2212-BSCCO single crystals. The temperature dependence of the zero-field critical current and quasi-particle conductance is related to microscopic d-wave models in the presence of impurity scattering. The strong field dependence of the c-axis...

Intrinsic C-Axis Tunnelling in BSCCO Crystals

Intrinsic c-axis tunnelling in the superconducting state has been measured in zero and finite fields in small mesa structures fabricated on the surface of 2212-BSCCO single crystals. The temperature dependence of the zero-field critical current and quasi-particle conductance is related to microscopic d-wave models in the presence of impurity scattering. The strong field dependence of the c-axis...