Quasiparticle Energy Dispersion and Shadow Peaks in a Doped SO(5) Symmetric Ladder
Strongly Correlated Electrons
2007-05-23 v1 Superconductivity
Abstract
Mean field and exact diagonalization studies on the quasiparticle excitation of an SO(5) symmetric two-leg ladder system are reported. It is shown that the energy gap in the quasiparticle excitation is caused by the formation of rung singlet states. We find that shadow peaks can occur above the Fermi surface with antiferromagnetic electron correlations involving only rungs in the spin ladder.
Keywords
Cite
@article{arxiv.cond-mat/9807154,
title = {Quasiparticle Energy Dispersion and Shadow Peaks in a Doped SO(5) Symmetric Ladder},
author = {Seung-Pyo Hong and Sung-Ho Suck Salk},
journal= {arXiv preprint arXiv:cond-mat/9807154},
year = {2007}
}
Comments
13 pages, 4 figures