Bi2Sr2CaCu2O8+δ c-axis bicrystal twist Josephson junctions: the superior phase-sensitive test of order parameter symmetry

2004 ◽  
Vol 4 (5) ◽  
pp. 509-512 ◽  
Author(s):  
Richard A. Klemm
Keyword(s):  
Josephson Junctions ◽  
Order Parameter ◽  
Sensitive Test ◽  
Phase Sensitive ◽  
Parameter Symmetry ◽  
Order Parameter Symmetry

Bi2Sr2CaCu2O8+δBicrystalc-Axis Twist Josephson Junctions: A New Phase-Sensitive Test of Order Parameter Symmetry

1999 ◽  
Vol 83 (20) ◽  
pp. 4160-4163 ◽  
Author(s):  
Qiang Li ◽  
Y. N. Tsay ◽  
M. Suenaga ◽  
R. A. Klemm ◽  
G. D. Gu ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Order Parameter ◽  
Sensitive Test ◽  
Phase Sensitive ◽  
Parameter Symmetry ◽  
New Phase ◽  
Order Parameter Symmetry

c-AXIS TWIST Bi2Sr2CaCu2O8+δ JOSEPHSON JUNCTIONS: A NEW PHASE-SENSITIVE TEST OF ORDER PARAMETER SYMMETRY

1999 ◽  
Vol 13 (29n31) ◽  
pp. 3449-3454 ◽  
Author(s):  
RICHARD A. KLEMM ◽  
GERALD ARNOLD ◽  
ANDREAS BILLE ◽  
CARSTEN T. RIECK ◽  
KURT SCHARNBERG
Keyword(s):  
Order Parameter ◽  
Twist Angle ◽  
Wave Component ◽  
Sensitive Test ◽  
S Wave ◽  
Josephson Tunneling ◽  
Phase Sensitive ◽  
Parameter Symmetry ◽  
New Phase ◽  
Order Parameter Symmetry

Li et al. found that the critical current density [Formula: see text] across atomically clean c-axis twist junctions of Bi 2 Sr 2 CaCu 2 O 8+δ is the same as that of the constituent single crystal, [Formula: see text], independent of the twist angle ϕ0, even at and below Tc. We investigated theoretically if a dx2-y2-wave order parameter might twist by mixing in dxy-wave components, but found that such mixing cannot possibly explain the data near to Tc. Combined with group theoretical arguments, we then conclude that the order parameter contains at least a substantial s-wave component, but does not contain any purported dx2-y2-wave compoenent, except possibly below a second, unobserved phase transition. By studying tunneling models, we further conclude that the intrinsic c-axis Josephson tunneling in Bi 2 Sr 2 CaCu 2 O 8+δ is likely to be most incoherent. We also propose a c-axis junction version of a tricrystal experiment, which does not rely upon expensive substrates.

Example of how an unconventional order parameter symmetry may open new perspectives in the design of HTS Josephson junctions

2002 ◽  
Author(s):  
Francesco Tafuri ◽  
Filomena Lombardi ◽  
F. M. Granozio ◽  
F. Carillo ◽  
Fabrizio Riccia ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Order Parameter ◽  
Parameter Symmetry ◽  
Order Parameter Symmetry

scholarly journals Phase-Sensitive Order Parameter Symmetry Test Experiments UtilizingNd2−xCexCuO4−y/NbZigzag Junctions

2005 ◽  
Vol 94 (16) ◽  
Author(s):  
Ariando ◽  
D. Darminto ◽  
H. -J. H. Smilde ◽  
V. Leca ◽  
D. H. A. Blank ◽  
...  
Keyword(s):  
Order Parameter ◽  
Symmetry Test ◽  
Phase Sensitive ◽  
Parameter Symmetry ◽  
Order Parameter Symmetry
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