Analysis of Superconductivity in d-p Model on Basis of Perturbation Theory

Physics – Condensed Matter – Superconductivity

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

4pages, 9figures, to be published in J. Phys. Soc. Jpn

Scientific paper

10.1143/JPSJ.74.1397

We investigate the mass enhancement factor and the superconducting transition temperature in the d-p model for the high-$\Tc$ cuprates. We solve the \'Eliashberg equation using the third-order perturbation theory with respect to the on-site Coulomb repulsion $U$. We find that when the energy difference between d-level and p-level is large, the mass enhancement factor becomes large and $\Tc$ tends to be suppressed owing to the difference of the density of state for d-electron at the Fermi level. From another view point, when the energy difference is large, the d-hole number approaches to unity and the electron correlation becomes strong and enhances the effective mass. This behavior for the electron number is the same as that of the f-electron number in the heavy fermion systems. The mass enhancement factor plays an essential role in understanding the difference of $\Tc$ between the LSCO and YBCO systems.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Analysis of Superconductivity in d-p Model on Basis of Perturbation Theory does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Analysis of Superconductivity in d-p Model on Basis of Perturbation Theory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analysis of Superconductivity in d-p Model on Basis of Perturbation Theory will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-593213

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.