Effect of Magnetic Impurity Scattering in a d-wave Superconductor

2000 ◽  
Vol 37 (5) ◽  
pp. 552-556 ◽  
Author(s):  
C. H. Choi
Keyword(s):  
Magnetic Impurity ◽  
Impurity Scattering ◽  
D Wave

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

SUPERCONDUCTIVITY IN THE VICINITY OF A 2D ELECTRONIC TOPOLOGICAL TRANSITION

2003 ◽  
Vol 17 (04n06) ◽  
pp. 431-437
Author(s):  
G. G. N. ANGILELLA ◽  
E. PIEGARI ◽  
A. A. VARLAMOV
Keyword(s):  
Impurity Scattering ◽  
Superconducting Gap ◽  
Superconducting Properties ◽  
Good Qualitative Agreement ◽  
Ginzburg Landau ◽  
Nonmonotonic Dependence ◽  
Topological Transition ◽  
Electronic Topological Transition ◽  
Nonmonotonic Behavior ◽  
D Wave

We review some results concerning the superconducting properties of a 2D superconductor in the proximity to an electronic topological transition (ETT). In contrast to the 3D case, we find that the superconducting gap at T = 0 is characterized by a nonmonotonic behavior, with maxima occurring close to the ETT, both for s- and for d-wave pairing. Such a result is in good qualitative agreement with the phenomenological trend recently observed for [Formula: see text] as a function of the hopping ratio t′/t for several cuprate compounds. We also derive a nonmonotonic dependence of the quasiparticle inverse lifetime due to impurity scattering. We further analyze the effect of an ETT on the Ginzburg-Landau stiffness η, for which we recover an expression analogous to the case of an isotropic dispersion relation.

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