Simple‐heating‐induced Josephson effects in quasiparticle‐injected superconducting weak links

1980 ◽  
Vol 51 (3) ◽  
pp. 1682-1685 ◽  
Author(s):  
S. B. Kaplan
Keyword(s):  
Weak Links ◽  
Josephson Effects

A simple phenomenological model of the Josephson effects in superconducting weak links

1976 ◽  
Vol 25 (3-4) ◽  
pp. 409-419 ◽  
Author(s):  
Bascom S. Deaver ◽  
Robert Rifkin ◽  
Robert D. Sandell
Keyword(s):  
Phenomenological Model ◽  
Weak Links ◽  
Josephson Effects

scholarly journals Josephson detection of time-reversal symmetry broken superconductivity in SnTe nanowires

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
C. J. Trimble ◽  
M. T. Wei ◽  
N. F. Q. Yuan ◽  
S. S. Kalantre ◽  
P. Liu ◽  
...  
Keyword(s):  
Critical Current ◽  
Time Reversal ◽  
Josephson Effect ◽  
Domain Walls ◽  
Second Harmonic ◽  
Zero Magnetic Field ◽  
Weak Links ◽  
Current Phase ◽  
Time Reversal Symmetry ◽  
Josephson Effects

AbstractA Josephson junction (JJ) couples the supercurrent flowing between two weakly linked superconductors to the phase difference between them via a current-phase relation (CPR). While a sinusoidal CPR is expected for conventional junctions with insulating weak links, devices made from some exotic materials may give rise to unconventional CPRs and unusual Josephson effects. In this work, we present such a case: we investigate the proximity-induced superconductivity in SnTe nanowires by incorporating them as weak links in JJs and observe a deviation from the standard CPR. We report on indications of an unexpected breaking of time-reversal symmetry in these devices, detailing the unconventional characteristics that reveal this behavior. These include an asymmetric critical current in the DC Josephson effect, a prominent second harmonic in the AC Josephson effect, and a magnetic diffraction pattern with a minimum in critical current at zero magnetic field. The analysis examines how multiband effects and the experimentally visualized ferroelectric domain walls give rise to this behavior, giving insight into the Josephson effect in materials that possess ferroelectricity and/or multiband superconductivity.

Normal-state properties and Josephson effects in HTS weak links produced by electron beam

1995 ◽  
Vol 5 (2) ◽  
pp. 2521-2526 ◽  
Author(s):  
S.K. Tolpygo ◽  
S. Shokhor ◽  
B. Nadgorny ◽  
J.-Y. Lin ◽  
M. Gurvitch ◽  
...  
Keyword(s):  
Electron Beam ◽  
Normal State ◽  
Weak Links ◽  
Josephson Effects ◽  
Normal State Properties ◽  
And Josephson Effects

A new type of defect structure in 124-superconducting oxide revealed by HREM

1991 ◽  
Vol 49 ◽  
pp. 1092-1093
Author(s):  
R. Sharma ◽  
B.L. Ramakrishna ◽  
N.N. Thadhani ◽  
D. Hianes ◽  
Z. Iqbal
Keyword(s):  
Shock Wave ◽  
Defect Structure ◽  
Neutron Radiation ◽  
Weak Links ◽  
Defect Structures ◽  
New Materials ◽  
New Type ◽  
Current Densities ◽  
Processing Techniques ◽  
Microstructural Studies

After materials with superconducting temperatures higher than liquid nitrogen have been prepared, more emphasis has been on increasing the current densities (Jc) of high Tc superconductors than finding new materials with higher transition temperatures. Different processing techniques i.e thin films, shock wave processing, neutron radiation etc. have been applied in order to increase Jc. Microstructural studies of compounds thus prepared have shown either a decrease in gram boundaries that act as weak-links or increase in defect structure that act as flux-pinning centers. We have studied shock wave synthesized Tl-Ba-Cu-O and shock wave processed Y-123 superconductors with somewhat different properties compared to those prepared by solid-state reaction. Here we report the defect structures observed in the shock-processed Y-124 superconductors.

Sign in / Sign up

Export Citation Format

Share Document