Stripe formation in electron-doped cuprates
We investigate the formation of charge domain walls in an electron-doped extended Hubbard model for the superconducting cuprates. Within an unrestricted Hartree-Fock approach, extended by slave bosons to obtain a better treatment of strong correlations, we demonstrate the occurrence of stripes in the (1,1) and (1,-1) directions having one doped electron per stripe site. The different filling, direction, and width of these electron-doped stripes with respect to those obtained in the hole-doped systems have interesting observable consequences.
Sadori
A
Istituto Nazionale di Fisica della Materia and Dipartimento di Fisica, Universita di Roma "La Sapienza," Piazzale A. Moro 2, Roma, Italy 00185, USA.
Grilli
M