Superconductivity of Carriers Doped into the Static Charge Density Wave State in 2-Dimensional Square Lattice
Abstract
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 Tc ~ 100 K is shown to easily be attained near the half-filling.
- Publication:
-
Progress of Theoretical Physics
- Pub Date:
- March 1995
- DOI:
- 10.1143/ptp/93.3.519
- arXiv:
- arXiv:cond-mat/9501023
- Bibcode:
- 1995PThPh..93..519K
- Keywords:
-
- Condensed Matter
- E-Print:
- 26 pages, Tex, 10 figures (available upon request kishine@tansei.cc.u-tokyo.ac.jp )