Simultaneous quasiparticle and Josephson tunneling in BSCCO-2212 break junctions

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...

Shapiro Steps in BSCCO Intrinsic Josephson Junctions

Macroscopic Quantum Tunneling and Resonant Activation of Current Biased Intrinsic Josephson Junctions in Bi-2212

The utilization of a high-Tc superconductor for implementing a superconducting qubit is to be expected. Recent researches on the quantum property of Josephson junctions in high-Tc superconductors indicate that the low energy quasiparticle excitation is weak enough to observe the macroscopic quantum tunneling. Therefore, a detailed study on the quantum property of high-Tc Josephson junctions bec...

Macroscopic quantum tunneling and quasiparticle dissipation in d-wave superconductor Josephson junctions

S. Kawabata,1,* S. Kashiwaya,2 Y. Asano,3 and Y. Tanaka4 1Nanotechnology Research Institute and Synthetic Nano-Function Materials Project (SYNAF), National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan 2Nanoelectronics Research Institute, AIST, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan 3Department of Applied Physics, Hokkai...

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...