EFFECT OF RANDOMNESS ON ZERO BIAS CONDUCTANCE PEAK IN DISORDERD NORMAL METAL / D-WAVE SUPERCONDUCTOR JUNCTION

2003 ◽  
Author(s):  
H. ITOH ◽  
N. KITAURA ◽  
Y. TANAKA ◽  
J. INOUE ◽  
Y. ASANO ◽  
...  
Keyword(s):  
Normal Metal ◽  
Zero Bias ◽  
Conductance Peak ◽  
Zero Bias Conductance ◽  
D Wave

On the Origin of Zero-Bias Conductance Peak in High-Tc Superconductors

1998 ◽  
Vol 12 (29n31) ◽  
pp. 3027-3030
Author(s):  
Alexander B. Nazarenko ◽  
Ernst A. Pashitskii ◽  
Alexander E. Pashitskii
Keyword(s):  
Elastic Scattering ◽  
Order Parameter ◽  
Magnetic Impurities ◽  
High Tc Superconductors ◽  
Zero Bias ◽  
High Tc ◽  
Conductance Peak ◽  
Wave Symmetry ◽  
Zero Bias Conductance ◽  
D Wave

We show that the zero-bias conductance peak observed in tunnel and point junctions of cuprates can be a consequence of "unitary" elastic scattering of the carriers by non-magnetic impurities in the vicinity of the junction interface and d-wave symmetry of the order parameter.

Influence of the Impurity-scattering on Zero-bias Conductance Peak in Ferromagnet/Insulator/d-wave Superconductor Junctions

2003 ◽  
Vol 72 (4) ◽  
pp. 895-899 ◽  
Author(s):  
Nobukatsu Yoshida ◽  
Yasuhiro Asano ◽  
Hiroyoshi Itoh ◽  
Yukio Tanaka ◽  
Jun-ichiro Inoue ◽  
...  
Keyword(s):  
Impurity Scattering ◽  
Zero Bias ◽  
Conductance Peak ◽  
Zero Bias Conductance ◽  
D Wave

d-Wave Tunnel Junctions

1999 ◽  
Vol 13 (09n10) ◽  
pp. 1295-1299
Author(s):  
A. M. Cucolo ◽  
M. Cuoco ◽  
C. Noce
Keyword(s):  
Weak Coupling ◽  
Tunnel Junctions ◽  
Coupling Model ◽  
Normal Metal ◽  
Tunneling Conductance ◽  
Spin States ◽  
S Wave ◽  
Zero Bias ◽  
Zero Bias Conductance ◽  
D Wave

We study the tunneling spectra for superconductor-insulator-normal metal (S-I-N) tunnel junctions with an s -wave or a d -wave superconductor within the weak-coupling model. We deduce the temperature behavior of tunneling conductance and their peak positions as well as of the zero-bias conductance. The results obtained allow us to discriminate among the two singlet spin states.

scholarly journals POINT CONTACT STUDY OF THE SUPERCONDUCTING ORDER PARAMETER IN RuSr2GdCu2O8

2005 ◽  
Vol 19 (01n03) ◽  
pp. 323-325 ◽  
Author(s):  
S. PIANO ◽  
F. BOBBA ◽  
F. GIUBILEO ◽  
A. M. CUCOLO ◽  
A. VECCHIONE
Keyword(s):  
Order Parameter ◽  
Magnetic Order ◽  
Point Contact ◽  
Superconducting Order Parameter ◽  
Zero Bias ◽  
Bulk Superconductivity ◽  
Conductance Peak ◽  
Wave Symmetry ◽  
Zero Bias Conductance ◽  
D Wave

We have performed a detailed study of the conductance characteristics obtained by point contact junctions realized between a normal Pt / Ir tip and syntered RuSr 2 GdCu 2 O 8 ( Ru -1212) samples. Indeed, this compound is subject of great interest due to the coexistence of both magnetic order and bulk superconductivity. In our experiments, the low temperature tunneling spectra reproducibly show a zero bias conductance peak that can be well reproduced by a generalized BTK model in the case of d-wave symmetry of the superconducting order parameter.

Zero-bias conductance peak reduction by diffusive normal metal in high-Tc superconductor tunnel junctions

2005 ◽  
Vol 66 (8-9) ◽  
pp. 1401-1404
Author(s):  
Iduru Shigeta ◽  
Yukio Tanaka ◽  
Fusao Ichikawa ◽  
Yasuhiro Asano ◽  
Satoshi Kashiwaya
Keyword(s):  
Tunnel Junctions ◽  
Normal Metal ◽  
Peak Reduction ◽  
Zero Bias ◽  
High Tc ◽  
High Tc Superconductor ◽  
Conductance Peak ◽  
Zero Bias Conductance
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