| Issue |
Europhys. Lett.
Volume 37, Number 5, February II 1997
|
|
|---|---|---|
| Page(s) | 359 - 364 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1997-00157-x | |
| Published online | 01 September 2002 | |
Electronic structure of one-dimensional cuprate, Sr2CuO3
1
Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India
2
Department of Physics, University of Tokyo - Bunkyo-ku, Tokyo 113, Japan
Received:
11
October
1996
Accepted:
10
January
1997
We investigate the electronic structure of the
antiferromagnetic
insulator 
combining photoemission measurements and
various calculations. The results suggest that
the charge transfer energy, 
, is unusually small, placing the
bare upper Hubbard band within the oxygen p bandwidth, thereby
implying that this compound is the first example of a correlated
covalent insulator with a finite local moment.
PACS: 79.60.Bm – Photoemission and photoelectron spectra: clean metal, semiconductor, and insulator surfaces / 71.27.+a – Strongly correlated electron systems; heavy fermions / 71.28.+d – Narrow band systems; intermediate-valence solids
© EDP Sciences, 1997
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