scholarly journals Influence of the Fermi surface geometry on the Josephson effect between iron-pnictide and conventional superconductors

2021 ◽  
Vol 103 (21) ◽  
Author(s):  
A. A. Kalenyuk ◽  
E. A. Borodianskyi ◽  
A. A. Kordyuk ◽  
V. M. Krasnov
Keyword(s):  
Fermi Surface ◽  
Josephson Effect ◽  
Surface Geometry ◽  
Iron Pnictide

NONSTATIONARY JOSEPHSON EFFECT AND QUASIPARTICLE TUNNELING BETWEEN PARTIALLY-DIELECTRIZED SUPERCONDUCTORS WITH CHARGE-DENSITY WAVES

1993 ◽  
Vol 07 (22) ◽  
pp. 3927-3935 ◽  
Author(s):  
A.M. GABOVICH
Keyword(s):  
Experimental Data ◽  
Fermi Surface ◽  
Charge Density ◽  
Excitation Spectrum ◽  
Josephson Effect ◽  
Tunnel Junctions ◽  
Charge Density Waves ◽  
Density Waves ◽  
Quasiparticle Tunneling ◽  
Current Voltage

The tunnel junctions between superconductors where the Fermi surface (FS) is partially dielectrized are considered. The dielectrization due to Coulomb- and (or) electron-phonon interactions leads to the emergence of the dielectric gap Σ on nested FS sections and the existence of the charge-density waves below temperature T=T d . When T<T c <T d the partially-dielectrized metals become superconductors with a corresponding gap ∆. The voltage dependences of the nonstationary Josephson current and quasiparticle current are calculated for such junctions. The current-voltage (I–V) characteristics involve several Riedel-type singularities and jumps for voltages equal to definite combinations of gaps ∆ and Σ in the fermion excitation spectrum. So, I–V curves are much more complex than the ones for usual BCS-type superconductors. The results for quasiparticle tunneling agree with the experimental data available for oxides.

On the Fermi surface geometry and antiferromagnetism of YBa2Cu3O6+x

2000 ◽  
Vol 336 (1-2) ◽  
pp. 157-161 ◽  
Author(s):  
V.S Oudovenko ◽  
S.Y Savrasov ◽  
O.K Andersen
Keyword(s):  
Fermi Surface ◽  
Surface Geometry

Consequences of Fermi surface geometry

1989 ◽  
Vol 162-164 ◽  
pp. 769-770
Author(s):  
Walter A. Harrison
Keyword(s):  
Fermi Surface ◽  
Surface Geometry

Effect of Fermi Surface Geometry on Electron-Electron Scattering

1971 ◽  
Vol 4 (2) ◽  
pp. 302-311 ◽  
Author(s):  
Christopher Hodges ◽  
Henrik Smith ◽  
J. W. Wilkins
Keyword(s):  
Fermi Surface ◽  
Electron Scattering ◽  
Surface Geometry
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