Differences in the quasiparticle dynamics for one-band and three-band cuprate models

Hadi Ebrahimnejad, George A. Sawatzky, Mona Berciu

We study the quasiparticles of the one-band $t$-$J$ and $t$-$t^{\prime }$-$t"$-$J$ models using a variational approximation that includes spin fluctuations in the vicinity of the hole. We e…