In this note, we analyze the classical magneto-static approach to theory of type I superconductors, and a Debye source representation that can be used numerically solve resultant equations. We also prove one fields, J−, found within superconductor via London equations, is physical current in outgoing part magnetic field given as Biot-Savart integral J−. Finally, compute static currents for mode...

It is shown that the low energy spectrum of mesoscopic superconductors coupled by Josephson interaction can be probed by two-electron tunneling from a normal electrode. The Andreev reflection in the NS junction of a normal-superconductor-superconductor double junction (NSS transistor) provides a unique spectroscopic tool to probe the coherent Cooper pair tunneling and the energy spectrum of the...

We present current noise measurements in a long diffusive superconductor-normal-metal-superconductor junction in the low voltage regime, in which transport can be partially described in terms of coherent multiple Andreev reflections. We show that, when decreasing voltage, the current noise exhibits a strong divergence together with a broad peak. We ascribe this peak to the mixing between the ac...

Samsung Superconductor Test Facility (SSTF), a superconductor and superconducting magnet test facility, has been constructed at Samsung Advanced Institute of Technology. The main purpose of SSTF is to manufacture and test superconducting magnets for the Korean Superconducting Tokamak Advanced Research tokamak. The data Acquisition and Control (DAC) system for SSTF is composed of UNIX workstatio...

A ferromagnetic gyroscope (FG) is a ferromagnet whose angular momentum dominated by electron spin polarization and that will precess under the action of an external torque, such as due to magnetic field. Here we model analyze FG dynamics sensitivity, focusing on practical schemes for experimental realization. In case freely floating FG, transition from libration in relatively high externally ap...

A point-contact probe capable of operating down to temperatures of 1.5 K and in magnetic fields of up to 32 T was designed and constructed. With this probe, preliminary data was obtained on Pr2-xCexCuO4 (PCCO) which reproduced previously published data in fields up to 8 T and temperatures down to 4.2 K. What is a superconductor? A material that can carry current without resistance at temperatur...

2014 The analysis of possible phenomena in the superconductor-constriction-superconductor (S-c-S) junctions inserted into microwave circuits is carried out. The results of experiments in which properties of the junctions making them different in comparison with usual nonlinear microwave elements were studied are discussed. The characteristics of receiving devices such as amplifiers, detectors a...

The superconducting state of an infinitely long superconducting cylinder surrounded by a medium which enhances its superconductivity near the boundary is studied within the nonlinear Ginzburg-Landau theory. This enhancement can be due to the proximity of another superconductor or due to surface treatment. Quantities such as the free energy, the magnetization and the Cooper-pair density are calc...