scholarly journals Bound State and Order Parameter Mixing Effect by Nonmagnetic Impurity Scattering in Two-band Superconductors

2002 ◽  
Vol 71 (8) ◽  
pp. 1978-1992 ◽  
Author(s):  
Yoji Ohashi
Keyword(s):  
Order Parameter ◽  
Impurity Scattering ◽  
Bound State ◽  
Nonmagnetic Impurity ◽  
Mixing Effect

SUBSTITUTION EFFECT OF Ni AND Zn FOR Cu IN Bi(Pb)-Sr-Ca-Cu-O System

1991 ◽  
Vol 05 (06) ◽  
pp. 439-445 ◽  
Author(s):  
N.L. WANG ◽  
J. SHA ◽  
M.C. TAN ◽  
J.S. WANG ◽  
Q.R. ZHANG
Keyword(s):  
Transition Temperature ◽  
Oxygen Vacancies ◽  
Hole Concentration ◽  
Impurity Scattering ◽  
Substitution Effect ◽  
Bound State ◽  
Substitution Effects ◽  
Concentration Change ◽  
Average Valence ◽  
Structure Disorder

The substitution effects of Ni and Zn for Cu in Bi(Pb)-Sr-Ca-Cu-O system have been studied. The transition temperature Tc decreases at nearly the same rate with the Ni and Zn contents in 2212 phase. The impurities also depress the transition temperature in 2223 phase. It is suggested that the depression of Tc is not caused by reduction of hole concentration, change of unpaired d electron numbers, oxygen vacancies, or, related to it, the formal average valence state of Cu , but is rather due to the partial elimination of the singlet bound state formed from the combination Cu 3d x2 - y2 - O 2 p σ We also discussed the structure disorder which may bring about impurity scattering and localization effects.

The Two-Soliton Bound-State Solution in an Order-Parameter-Preserving Antiferromagnet

1993 ◽  
Vol 20 (4) ◽  
pp. 427-432 ◽  
Author(s):  
Wu-Ming Liu ◽  
Ben-Lian Zhou ◽  
Jing-Dong Guo ◽  
Xuan-Rong Ma
Keyword(s):  
Order Parameter ◽  
Bound State ◽  
State Solution ◽  
Bound State Solution
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