Evidence for an energy scale for quasiparticle dispersion in Bi_2Sr_2CaCu_2O_8

P. V. Bogdanov, A. Lanzara, S. A. Kellar +8

Quasiparticle dispersion in $B{i}_{2}S{r}_{2}CaC{u}_2{O}_8$ is investigated with improved angular resolution as a function of temperature and doping. Unlike the linear dispersion predi…