Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1997-07-25
Phys. Rev. B 56 (1997) 11262-11266
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, RevTeX. Figures available upon request to ohta@science.s.chiba-u.ac.jp. To be published in Phys. Rev. B
Scientific paper
10.1103/PhysRevB.56.11262
An exact-diagonalization technique on finite-size clusters is used to study the ground state and excitation spectra of the two-dimensional effective fermion model, a fictious model of hole quasiparticles derived from numerical studies of the two-dimensional t-J model at low doping. We show that there is actually a reasonable range of parameter values where the $d_{x^2-y^2}$-wave pairing of holes occurs and the low-lying excitation can be described by the picture of Bogoliubov quasiparticles in the BCS pairing theory. The gap parameter of a size $\Delta_d\simeq 0.13|V|$ (where $V$ is the attractive interaction between holes) is estimated at low doping levels. The paired state gives way to the state of clustering of holes for some stronger attractions.
Eder Robert
Ohta Yasuhiro
Yamaguchi Masahide
No associations
LandOfFree
Bogoliubov quasiparticle spectra of the effective d-wave model for cuprate superconductivity 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 Bogoliubov quasiparticle spectra of the effective d-wave model for cuprate superconductivity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bogoliubov quasiparticle spectra of the effective d-wave model for cuprate superconductivity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-505151