PAIRING MECHANISM FOR OXYGEN HOLES IN PLANAR CuO2 SYSTEMS

1988 ◽  
Vol 02 (05) ◽  
pp. 771-778
Author(s):  
Ken SASAKI ◽  
Hiroshi BETSUYAKU
Keyword(s):  
Spin Density ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Density Wave ◽  
Spin Density Wave ◽  
Phase Approximation ◽  
Pairing Mechanism ◽  
Effective Interactions ◽  
Oxygen Ions ◽  
Explicit Expressions

Effects of antiferromagnetic fluctuations on the pairing of holes produced on oxygen ions by doping are investigated theoretically for the planar CuO 2 systems in the spin-density-wave (SDW) background. Explicit expressions for singlet and triplet effective interactions are obtained within the random-phase approximation, which predicts great possibilities of singlet pairing. It is shown that the pairing is multiplicatively enhanced by the coexistence of p− and d-holes near the SDW instability.

Galvanomagnetic properties in the spin-density-wave phase of (TMTSF)2PF6

1999 ◽  
Vol 09 (PR10) ◽  
pp. Pr10-247-Pr10-249 ◽  
Author(s):  
B. Korin-Hamzic ◽  
M. Basletić ◽  
N. Francetić ◽  
A. Hamzić ◽  
K. Bechgaard
Keyword(s):  
Spin Density ◽  
Density Wave ◽  
Spin Density Wave ◽  
Wave Phase ◽  
Galvanomagnetic Properties

Interpretation of Preferential Adsorption Using Random Phase Approximation Theory

1995 ◽  
Vol 60 (10) ◽  
pp. 1641-1652 ◽  
Author(s):  
Henri C. Benoît ◽  
Claude Strazielle
Keyword(s):  
Approximation Theory ◽  
Random Phase Approximation ◽  
Virial Coefficient ◽  
Random Phase ◽  
Second Virial Coefficient ◽  
Solvent Mixture ◽  
Gyration Radius ◽  
Thermodynamic Quantities ◽  
Phase Approximation ◽  
Preferential Adsorption

It has been shown that in light scattering experiments with polymers replacement of a solvent by a solvent mixture causes problems due to preferential adsorption of one of the solvents. The present paper extends this theory to be applicable to any angle of observation and any concentration by using the random phase approximation theory proposed by de Gennes. The corresponding formulas provide expressions for molecular weight, gyration radius, and the second virial coefficient, which enables measurements of these quantities provided enough information on molecular and thermodynamic quantities is available.

Neutrino reactions onC12by the quasiparticle random-phase approximation (QRPA)

2010 ◽  
Vol 81 (2) ◽  
Author(s):  
Myung-Ki Cheoun ◽  
Eunja Ha ◽  
Su Youn Lee ◽  
K. S. Kim ◽  
W. Y. So ◽  
...  
Keyword(s):  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation ◽  
Quasiparticle Random Phase Approximation
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