Abstract
The effect of hole doping on the electronic states in high Tc superconducting oxides is examined. Assuming the periodic Anderson model for the CuO system composed of highly correlated copper d electrons and oxigen p electrons, we calculated the density of states in the low energy region in the case that the bare p band is situated inside the Hubbard gap. We found that a narrow band like a heavy fermion band appears near the Fermi level inside the charge transfer gap when the hole number is small. This result explaines a new optical absorption band observed in La2-xSrxCuO4.
Original language | English |
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Pages (from-to) | 1509-1510 |
Number of pages | 2 |
Journal | Physica C: Superconductivity and its applications |
Volume | 162-164 |
Issue number | PART 2 |
DOIs | |
Publication status | Published - 1989 Dec |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering