About tunneling of pairs of the cooper pairs through the Josephson junctions in exotic superconductors

2012 ◽  
Vol 55 (1) ◽  
pp. 84-91 ◽  
Author(s):  
D. M. Sergeyev
Keyword(s):  
Josephson Junctions ◽  
Cooper Pairs

BOSONIC OPERATOR HAMILTONIAN MODELS OF JOSEPHSON JUNCTIONS IN SERIES AND IN PARALLEL AND THEIR PROJECTIONS ONTO ENTANGLED STATE REPRESENTATIONS

2007 ◽  
Vol 21 (14) ◽  
pp. 851-857 ◽  
Author(s):  
WAN-YU YE ◽  
HONG-YI FAN
Keyword(s):  
Josephson Junctions ◽  
Josephson Current ◽  
Entangled State ◽  
Cooper Pairs ◽  
Hamiltonian Models ◽  
Bosonic Operator ◽  
In Series

We present the bosonic operator Hamiltonian models of two Josephson junctions which are connected in series and in parallel, respectively. By introducing the entangled state representations (|η〉 representation and Cooper pairs representation) and projecting the operator Hamiltonian onto the |η〉 representation we obtain the correct Josephson current and phase equations consistent with the classical Hamiltonian cases.

scholarly journals Low temperature characterization of high efficiency spin-filter Josephson junctions

2020 ◽  
Vol 233 ◽  
pp. 05007
Author(s):  
Roberta Caruso ◽  
Halima Giovanna Ahmad ◽  
Avradeep Pal ◽  
Giovanni Piero Pepe ◽  
Davide Massarotti ◽  
...  
Keyword(s):  
Low Temperature ◽  
Josephson Junctions ◽  
High Efficiency ◽  
Cooper Pairs ◽  
Spin Filter ◽  
Wide Range ◽  
Ferromagnetic Nature ◽  
Consistent Picture ◽  
Super Conducting

The interplay between superconducting and ferromagnetic order pa¬rameters in S/F interfaces gives rise to a wide range of peculiar properties with applications in high-efficiency computation and in the emerging field of super¬conducting spintronics. In NbN/GdN/NbN Josephson junctions, GdN barriers give unique properties due to the double insulting and ferromagnetic nature of the material, as demonstrated in previous works. Here we focus on tunneling spectroscopy of these junctions down to 0.3 K when changing the barrier thick¬ness, which contributes to complete a consistent picture on the physics of these junctions and supports the previous indications of equal-spin Cooper pairs con¬tributing to the total supercurrent of the devices.

Adiabatic Transport of Cooper Pairs in Arrays of Small Josephson Junctions

2001 ◽  
pp. 127-136
Author(s):  
J. P. Pekola ◽  
J. J. Toppari ◽  
N. Kim ◽  
M. T. Savolainen ◽  
L. Taskinen ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Cooper Pairs

scholarly journals Adiabatic transport of Cooper pairs in arrays of Josephson junctions

1999 ◽  
Vol 60 (14) ◽  
pp. R9931-R9934 ◽  
Author(s):  
J. P. Pekola ◽  
J. J. Toppari ◽  
M. Aunola ◽  
M. T. Savolainen ◽  
D. V. Averin
Keyword(s):  
Josephson Junctions ◽  
Cooper Pairs

Low-Tcramp-type Josephson junctions for SQUIDS

2002 ◽  
Vol 12 (3) ◽  
pp. 133-136 ◽  
Author(s):  
M. Podt ◽  
B. G.A. Rolink ◽  
J. Flokstra ◽  
H. Regalia
Keyword(s):  
Josephson Junctions

Application of silicon substrates for high-Tc Josephson junctions and SQUIDs

1998 ◽  
Vol 08 (PR3) ◽  
pp. Pr3-297-Pr3-300 ◽  
Author(s):  
S. Linzen ◽  
Y. J. Tian ◽  
U. Hübner ◽  
F. Schmidl ◽  
J. Scherbel ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Silicon Substrates ◽  
High Tc
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