The Impurity Effects on the Superconducting Gap in the High- T c Superconductor Bi2Sr2CaCu2−x Fe x O 8 + δ Investigated by STM/STS

2015 ◽  
Vol 29 (3) ◽  
pp. 659-662 ◽  
Author(s):  
S. Baar ◽  
N. Momono ◽  
K. Kawamura ◽  
Y. Kobayashi ◽  
S. Iwasaki ◽  
...  
Keyword(s):  
Superconducting Gap ◽  
Impurity Effects

Hydrogen-impurity-induced conductance peaks in constriction type Josephson junctions

2021 ◽  
Author(s):  
Kazuki Miyakawa ◽  
Hiroki Takata ◽  
Taishi Yamaguchi ◽  
Yuji Inagaki ◽  
Kazumasa Makise ◽  
...  
Keyword(s):  
Temperature Variation ◽  
Josephson Junctions ◽  
Andreev Reflection ◽  
Josephson Current ◽  
Differential Conductance ◽  
Superconducting Gap ◽  
Impurity Effects ◽  
Hydrogen Impurity ◽  
Multiple Andreev Reflection

Abstract We studied hydrogen (H) and deuterium (D) impurity effects of superconducting Josephson current flowing through the superconductor-constriction-superconductor Josephson junctions (ScS-JJ). When H or D impurities are adsorbed on the surface of the ScS-JJ prepared by niobium (Nb) or lead (Pb), many spike-like peaks with almost the same spacing appear inside the superconducting gap in addition to anomalies owing to the multiple Andreev reflection in the differential conductance spectra. The spacing between the adjacent peaks is independent of the temperature variation. These indicate that H or D impurities adsorbed on the JJ are sources of noise for the Josephson current.

scholarly journals Homogeneous superconducting gap in DyBa2Cu3O7−δ synthesized by oxide molecular beam epitaxy

2020 ◽  
Vol 4 (12) ◽  
Author(s):  
Ze-Bin Wu ◽  
Daniel Putzky ◽  
Asish K. Kundu ◽  
Hui Li ◽  
Shize Yang ◽  
...  
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Superconducting Gap

Impurity effects on trapped electron modes in tokamak plasmas with inverted electron density profile

2021 ◽  
Vol 28 (5) ◽  
pp. 052510
Author(s):  
X. R. Zhang ◽  
J. Q. Dong ◽  
H. R. Du ◽  
J. Y. Liu ◽  
Y. Shen ◽  
...  
Keyword(s):  
Electron Density ◽  
Density Profile ◽  
Electron Density Profile ◽  
Tokamak Plasmas ◽  
Impurity Effects ◽  
Trapped Electron

scholarly journals Unusual behaviours and impurity effects in the noncentrosymmetric superconductor CePt3Si

2009 ◽  
Vol 11 (5) ◽  
pp. 055054 ◽  
Author(s):  
I Bonalde ◽  
R L Ribeiro ◽  
W Brämer-Escamilla ◽  
C Rojas ◽  
E Bauer ◽  
...  
Keyword(s):  
Impurity Effects ◽  
Noncentrosymmetric Superconductor
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