Superconductivity of Carriers Doped into the Static Charge Density Wave State in 2-Dimensional Square Lattice

Details Superconductivity of Carriers Doped into the Static Charge Density Wave State in 2-Dimensional Square Lattice Superconductivity of Carriers Doped into the Static Charge Density Wave State in 2-Dimensional Square Lattice

1995-01-08

arxiv.org/abs/cond-mat/9501023v1

Physics

Condensed Matter

26 pages, Tex, 10 figures (available upon request kishine@tansei.cc.u-tokyo.ac.jp )

Scientific paper

10.1143/PTP.93.519

On the purpose of studying the effect of long-range Coulomb-interaction in strongly correlated electronic systems we bring in as its representative the nearest-neighbor repulsion ($v$) in addition to the on-site repulsion ($u$) and shall investigate the possibility of the superconducting transition of carriers doped into the charge-density wave (CDW) state expected for $v\,>\,u/4$ in 2-dimensional square lattice. We shall see that strongly correlated hopping processes of doped carriers make the systems superconducting. The favored superconducting phase is of extended s-wave symmetry, and $T_{c} \sim$100K is shown to easily be attained near the half-filling.

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