Fermi surface evolution in the antiferromagnetic state for the electron-doped t-t'-t''-J model

Details Fermi surface evolution in the antiferromagnetic state for the electron-doped t-t'-t''-J model Fermi surface evolution in the antiferromagnetic state for the electron-doped t-t'-t''-J model

2004-04-22

arxiv.org/abs/cond-mat/0404522v2

Phys. Rev. B 69, 214523 (2004)

Physics

Condensed Matter

Superconductivity

Fig. 4 is updated, to appear in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.69.214523

By use of the slave-boson mean-field approach, we have studied the electron-doped t-t'-t''-J model in the antiferromagnetic (AF) state. It is found that at low doping the Fermi surface (FS) pockets appear around $(\pm\pi,0)$ and $(0,\pm\pi)$, and upon increasing doping the other ones will form around $(\pm{\pi\over 2},\pm{\pi\over 2})$. The evolution of the FS with doping as well as the calculated spectral weight are consistent with the experimental results.

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