https://doi.org/10.1007/s100510070208
Structure of spin polarons in the t-t'-t''-Jz model
Institute of Physics, Jagellonian University, Reymonta 4, 30059 Kraków, Poland
Corresponding author: a ufbala@jetta.if.uj.edu.pl
Received:
11
January
2000
Published online: 15 August 2000
We calculate the Green function in the t-t'-t''-Jz model and analyze the deformation of the quantum Néel state in the presence of a moving hole. Solving the problem in a self-consistent Born approximation and using Reiter's wave function we have found various spin correlation functions. We show that the different sign of hopping elements between the hole- and electron-doped system of high-Tc cuprates is responsible for the sharp difference of the polaron structure between the two systems with antiferromagnetism stabilized in the electron-doped case by carriers moving mainly on one sublattice.
PACS: 71.10.Fd – Lattice fermion models (Hubbard model, etc.) / 71.27.+a – Strongly correlated electron systems; heavy fermions
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000
