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

K. Tanaka, T. Yoshida, A. Fujimori +11

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…