scholarly journals Isotope effects and possible pairing mechanism in optimally doped cuprate superconductors

2001 ◽  
Vol 63 (22) ◽  
Author(s):  
Guo-meng Zhao ◽  
Vidula Kirtikar ◽  
Donald E. Morris
Keyword(s):  
Cuprate Superconductors ◽  
Isotope Effects ◽  
Pairing Mechanism

ELECTRONIC THEORY FOR ELECTRON-DOPED CUPRATE SUPERCONDUCTORS: d-WAVE SUPERCONDUCTIVITY AND THE PHASE DIAGRAM

2000 ◽  
Vol 14 (29n31) ◽  
pp. 3555-3560
Author(s):  
D. MANSKE ◽  
I. EREMIN ◽  
K. H. BENNEMANN
Keyword(s):  
Cuprate Superconductors ◽  
Narrow Range ◽  
Spin Fluctuation ◽  
Flat Band ◽  
Superconducting Transition ◽  
Phonon Interaction ◽  
Pairing Mechanism ◽  
Lattice Disorder ◽  
Electron Phonon Interaction ◽  
The One

Using the one-band Hubbard Hamiltonian we determine various basic properties of the electron-doped cuprate superconductor Nd 2-x Ce x CuO 4 for a spin-fluctuation-induced pairing mechanism. We find a narrow range of superconductivity and, most importantly, like for hole-doped cuprates dx2-y2 -symmetry for the superconducting order parameter. The superconducting transition temperatures Tc(x) for various electron doping concentrations x are calculated to be much smaller than for hole-doped cuprates due to the different energy dispersion and a flat band well below the Fermi level. We find that lattice disorder may sensitively distort the dx2-y2 -symmetry via electron-phonon interaction yielding a finite isotope exponent α0.

scholarly journals Real and Marginal Isotope Effects in Cuprate Superconductors

2007 ◽  
Vol 20 (5) ◽  
pp. 393-396 ◽  
Author(s):  
A. R. Bishop ◽  
A. Bussmann-Holder ◽  
O. V. Dolgov ◽  
A. Furrer ◽  
H. Kamimura ◽  
...  
Keyword(s):  
Cuprate Superconductors ◽  
Isotope Effects

The Exponential Repulsion and Pairing Mechanism in Bisoliton Model on the Critical Temperature of Cuprate Superconductors

2014 ◽  
Vol 979 ◽  
pp. 132-134
Author(s):  
Thaipanya Chanpoom
Keyword(s):  
Experimental Data ◽  
Critical Temperature ◽  
Doping Level ◽  
Cuprate Superconductors ◽  
Pairing Mechanism

The pairing mechanism of research used the bisoliton model. The exact formular of Tcequation of cuprate superconductors which taken into account the exponential repulsion between bisoliton is derived. We find that the value of critical temperature depended on bisoliton density which confirm the experimental data that the critical temperature depended on the doping level.

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