Josephson effect in superconductor/ferromagnet structures with a complex weak-link region

2010 ◽  
Vol 81 (21) ◽  
Author(s):  
T. Yu. Karminskaya ◽  
A. A. Golubov ◽  
M. Yu. Kupriyanov ◽  
A. S. Sidorenko
Keyword(s):  
Josephson Effect ◽  
Weak Link

scholarly journals Josephson effect in a weak link between borocarbides

2005 ◽  
Vol 31 (2) ◽  
pp. 137-138 ◽  
Author(s):  
Yu. A. Kolesnichenko ◽  
S. N. Shevchenko
Keyword(s):  
Josephson Effect ◽  
Weak Link

scholarly journals Stationary Josephson effect in a weak link between nonunitary triplet superconductors

2005 ◽  
Vol 31 (6) ◽  
pp. 481-485 ◽  
Author(s):  
G. Rashedi ◽  
Yu. A. Kolesnichenko
Keyword(s):  
Josephson Effect ◽  
Weak Link

scholarly journals Transition from phase slips to the Josephson effect in a superfluid 4He weak link

2005 ◽  
Vol 2 (1) ◽  
pp. 23-26 ◽  
Author(s):  
E. Hoskinson ◽  
Y. Sato ◽  
I. Hahn ◽  
R. E. Packard
Keyword(s):  
Josephson Effect ◽  
Weak Link ◽  
Superfluid 4He ◽  
Phase Slips

EXPLANATION OF SOME EXPERIMENTAL PHENOMENA OF YBCO WEAK LINK

1990 ◽  
Vol 04 (12) ◽  
pp. 783-790
Author(s):  
HUO YUHUA ◽  
FENG HONGHUI ◽  
HU XUJIE ◽  
SHAO FANGWU ◽  
YANG XIAOMING
Keyword(s):  
Josephson Effect ◽  
Weak Link ◽  
Effect Experiment

In the Josephson effect experiment researchers observed a YBCO polycrystalline constriction bridge with the phenomena of the bump, the even steps, the odd steps as well as the absence of great varieties of steps in the I–Vx curve. This paper gave an audio-visual explanation of the abovementioned experimental phenomena qualitatively.

scholarly journals Theory of generalized Josephson effects

2020 ◽  
Vol 2020 (7) ◽  
Author(s):  
Aron J Beekman
Keyword(s):  
Josephson Effect ◽  
Chemical Potential ◽  
Weak Link ◽  
Energy Difference ◽  
Separation Distance ◽  
Broken Symmetry ◽  
Josephson Effects ◽  
Continuous Symmetry ◽  
Two Systems ◽  
Noether Current

Abstract The DC Josephson effect is the flow of supercurrent across a weak link between two superconductors with different values of their order parameters, the phase. We formulate this notion for any kind of spontaneous continuous symmetry breaking. The quantity that flows between the two systems is the zero-wavenumber Noether current associated with the broken symmetry. The AC Josephson effect is the oscillation of current due to the energy difference between the two systems caused by an imposed asymmetric chemical potential of Noether charge. As an example of novel physics, a Josephson effect is predicted between two crystalline solids, potentially measurable as a force periodic in the separation distance.

scholarly journals Josephson effect in SIFS tunnel junctions with domain walls in the weak link region

JETP Letters ◽  
2015 ◽  
Vol 101 (11) ◽  
pp. 765-771 ◽  
Author(s):  
S. V. Bakurskiy ◽  
A. A. Golubov ◽  
N. V. Klenov ◽  
M. Yu. Kupriyanov ◽  
I. I. Soloviev
Keyword(s):  
Josephson Effect ◽  
Domain Walls ◽  
Tunnel Junctions ◽  
Weak Link

Structural analysis of a Σ5 grain boundary in YBa2Cu3O7δ

1993 ◽  
Vol 51 ◽  
pp. 942-943
Author(s):  
J.-Y. Wang ◽  
Y. Zhu ◽  
A.H. King ◽  
M. Suenaga
Keyword(s):  
Grain Boundary ◽  
Lattice Mismatch ◽  
Weak Link ◽  
Coincidence Site Lattice ◽  
Large Angle ◽  
Dislocation Core ◽  
Superconducting Order Parameter ◽  
Outstanding Problem ◽  
Transmission Electron

One outstanding problem in YBa2Cu3O7−δ superconductors is the weak link behavior of grain boundaries, especially boundaries with a large-angle misorientation. Increasing evidence shows that lattice mismatch at the boundaries contributes to variations in oxygen and cation concentrations at the boundaries, while the strain field surrounding a dislocation core at the boundary suppresses the superconducting order parameter. Thus, understanding the structure of the grain boundary and the grain boundary dislocations (which describe the topology of the boundary) is essential in elucidating the superconducting characteristics of boundaries. Here, we discuss our study of the structure of a Σ5 grain boundary by transmission electron microscopy. The characterization of the structure of the boundary was based on the coincidence site lattice (CSL) model.Fig.l shows two-beam images of the grain boundary near the projection. An array of grain boundary dislocations, with spacings of about 30nm, is clearly visible in Fig. 1(a), but invisible in Fig. 1(b).

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