Abstract
Angle-resolved photoemission measurements were performed for one-dimensional Sr2CuO3 which consists of single Cu-O chains. Two dispersive bands were observed near EF in the first half of the Brillouin zone (k = 0 to π/2) of the chain-direction. Both bands have a common maximum point closest to EF at k = π/2 while they show different dispersions of about 0.25 and 1 eV, respectively, with a continuous intensity distribution in between. The less dispersive band is almost diminished in another half of the Brillouin zone (k = π/2 to π). These results are consistent with the solution of the one-dimensional Hubbard model as well as the t-J model calculation, suggesting the spin-charge separation in the one-dimensional Cu-O chain. The experimental results are compared with those of the double-chain compound SrCuO2.
Original language | English |
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Pages (from-to) | 543-547 |
Number of pages | 5 |
Journal | Solid State Communications |
Volume | 106 |
Issue number | 8 |
DOIs | |
Publication status | Published - May 1998 |
Externally published | Yes |
Keywords
- A. insulators
- D. electronic band structure
- E. photoelectron spectroscopies
ASJC Scopus subject areas
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry