Electric field controllable Josephson junctions of high quality in high‐Tc superconductors

1996 ◽  
Vol 68 (21) ◽  
pp. 3031-3033 ◽  
Author(s):  
B. Mayer ◽  
J. Mannhart ◽  
H. Hilgenkamp
Keyword(s):  
Electric Field ◽  
Josephson Junctions ◽  
High Tc Superconductors ◽  
High Quality ◽  
High Tc

Pair Symmetry and Degree of Gap Depression at S-I Interfaces in HTS Josephson Junctions

1999 ◽  
Vol 13 (09n10) ◽  
pp. 1301-1306
Author(s):  
G. A. Ummarino ◽  
R. S. Gonnelli ◽  
C. Bravi ◽  
Masumi Inoue
Keyword(s):  
Josephson Junctions ◽  
Order Parameter ◽  
Reference Value ◽  
High Tc Superconductors ◽  
S Wave ◽  
General Reference ◽  
High Tc ◽  
Wave Symmetry ◽  
Set Up ◽  
D Wave

A new possible indirect way of testing pair symmetry in high-Tc superconductors has been set up. The degree of intrinsic gap depression at Superconductor-Insulator [S-I] interfaces required to match Ic(T)Rn(T) data in HTS Josephson junctions depends on the pair symmetry of the material itself, so that an higher fraction of d-wave symmetry for the order parameter requires less gap depression, while an higher fraction of s-wave corresponds to a larger degree of gap depression. In order to obtain a general reference value for the intrinsic amount of gap depression at S-I interfaces the de Gennes condition has been used, and resulting reduced Ic(T)Rn(T) data have been calculated in the framework of a mixed (s+id)-wave pair symmetry for the depressed order parameter ranging from pure s to pure d-wave. This model has been tentatively applied to two junctions' made of very different HTSs: YBCO and BKBO, yielding a result of almost pure d-wave for YBCO and of pure s-wave for BKBO.

Electric field effect on excess conductivity in high-Tc superconductors

1994 ◽  
Vol 235-240 ◽  
pp. 2631-2632 ◽  
Author(s):  
V.S. Lysenko ◽  
Y.V. Gomeniuk ◽  
V.Z. Lozovski ◽  
I.P. Tyagulski ◽  
V.N. Varyukhin
Keyword(s):  
Electric Field ◽  
Field Effect ◽  
Excess Conductivity ◽  
Electric Field Effect ◽  
High Tc Superconductors ◽  
High Tc

The electric field action on high-Tc superconductors

1993 ◽  
Vol 209 (1-3) ◽  
pp. 99-102 ◽  
Author(s):  
B.Ya. Shapiro ◽  
I.B. Khalfin
Keyword(s):  
Electric Field ◽  
High Tc Superconductors ◽  
High Tc ◽  
Field Action

Phase slippage in a magnetic field at intra- and intergranular Josephson junctions in high-Tc superconductors

1990 ◽  
Vol 170 (3-4) ◽  
pp. 222-230 ◽  
Author(s):  
G.B. Smith ◽  
K.-H. Müller ◽  
C. Andrikidis ◽  
S.W. Filipczuk ◽  
J.M. Bell ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Josephson Junctions ◽  
High Tc Superconductors ◽  
High Tc ◽  
Phase Slippage
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