Effects of next-nearest-neighbor hopping $t^{\prime}$ on the electronic structure of cuprates

Details Effects of next-nearest-neighbor hopping $t^{\prime}$ on the electronic structure of cuprates Effects of next-nearest-neighbor hopping $t^{\prime}$ on the electronic structure of cuprates

2003-12-22

arxiv.org/abs/cond-mat/0312575v1

Physical Review B 70, 092503 (2004), Virtual Journal of Applications of Superconductivity, October 1, 2004

Physics

Condensed Matter

Superconductivity

5 pages,4 figures, 1 table

Scientific paper

10.1103/PhysRevB.70.092503

Photoemission spectra of underdoped and lightly-doped Bi$_{2-z}$Pb$_z$Sr$_2$Ca$_{1-x}${\it R}$_{x}$Cu$_2$O$_{8+y}$ ($R=$ Pr, Er) (BSCCO) have been measured and compared with those of La$_{2-x}$Sr$_x$CuO$_4$ (LSCO). The lower-Hubbard band of the insulating BSCCO, like Ca$_2$CuO$_2$Cl$_2$, shows a stronger dispersion than La$_2$CuO$_4$ from ${\bf k}\sim$($\pi/2,\pi/2$) to $\sim$($\pi,0$). The flat band at ${\bf k}\sim$($\pi,0$) is found generally deeper in BSCCO. These observations together with the Fermi-surface shapes and the chemical potential shifts indicate that the next-nearest-neighbor hopping $|t^{\prime}|$ of the single-band model is larger in BSCCO than in LSCO and that $|t^{\prime}|$ rather than the super-exchange $J$ influences the pseudogap energy scale.

Affiliated with

Also associated with

No associations

Rating

Effects of next-nearest-neighbor hopping $t^{\prime}$ on the electronic structure of cuprates 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 Effects of next-nearest-neighbor hopping $t^{\prime}$ on the electronic structure of cuprates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effects of next-nearest-neighbor hopping $t^{\prime}$ on the electronic structure of cuprates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-618137