scholarly journals Crystallography of High-Tc Superconductors. 5. Crystal Chemstry of Lead-based Copper Oxide Superconductors.

1992 ◽  
Vol 34 (5) ◽  
pp. 305-315 ◽  
Author(s):  
Ayako TOKIWA ◽  
Yasuhiko SYONO
1988 ◽  
pp. 29-40 ◽  
Author(s):  
M. B. Maple ◽  
Y. Dalichaouch ◽  
E. A. Early ◽  
B. W. Lee ◽  
J. T. Markert ◽  
...  

1991 ◽  
Vol 185-189 ◽  
pp. 1567-1568 ◽  
Author(s):  
H. Ihara ◽  
K. Bushida ◽  
N. Terada ◽  
S. Ishibashi ◽  
G. Zouganelis ◽  
...  

1988 ◽  
Vol 153-155 ◽  
pp. 858-859 ◽  
Author(s):  
M.B. Maple ◽  
Y. Dalichaouch ◽  
E.A. Early ◽  
B.W. Lee ◽  
J.T. Markert ◽  
...  

1989 ◽  
Vol 156 ◽  
Author(s):  
J.B. Goodenough ◽  
A. Manthiram ◽  
J. Zhou

ABSTRACTIt is argued that the origin of the high transition temperatures observed in Ba1−xKxBiO3 and the copper-oxide superconductors with perovskite-related structures is due to two factors: (1) overlap of a partially filled σ* band of primarily cation character and a π or π* band of mostly O-2pπ parentage permits charge transfer between cation and anion subarrays with oxygen-atom displacement perpendicular to a M-O-M bond axis and (2) bondlength mismatch places the M-O-M bondlength under a compressive or tensile stress. Relief of a compressive stress by the bending of a M-O-M bond from 180° introduces a strong electron-lattice interaction with holes; a 180° Cu-O-Cu bond allows strong electronlattice coupling with electrons of a Cu2+/+ redox couple, but not with holes in a Cu3+/2+redox couple.


Nature ◽  
1994 ◽  
Vol 371 (6500) ◽  
pp. 777-779 ◽  
Author(s):  
Zhen Yao ◽  
Seokwon Yoon ◽  
Hongjie Dai ◽  
Shoushan Fan ◽  
Charles M. Lieber

2005 ◽  
Vol 19 (22) ◽  
pp. 1083-1086 ◽  
Author(s):  
YU CHEN ◽  
XINMING HUANG ◽  
JIANWU WANG

This paper studies the functions of overstep chemistry calculation oxygen δ in high Tc copper oxide superconductors and analyzes the relative experiments' results. It is believed that the function of overstep chemistry calculation oxygen in Y series high Tc copper oxide superconductors is to adjust the change of effective electric charge P on the [Cu-O] p link or [Cu-O] P plane and this affects the bonding intensity on the CuO 2 plane, which in turn, adjusts the Y series high oxide superconductor's Tc.


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