Angle-Resolved Photoemission Spectroscopy of Tetragonal CuO: Evidence for Intralayer Coupling Between Cupratelike Sublattices
| Autor: | F. Fuchs, Frédéric Mila, Eli Rotenberg, Simon Moser, Davide Innocenti, Keun Su Kim, N. H. Hansen, Hong-Yu Yang, Aaron Bostwick, L. Moreschini, Marco Grioni, Young Jun Chang, Andrew L. Walter |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Coupling
Copper oxide Materials science Condensed matter physics MPBH General Physics and Astronomy Angle-resolved photoemission spectroscopy Electronic structure chemistry.chemical_compound Tetragonal crystal system Condensed Matter::Materials Science chemistry Condensed Matter::Superconductivity Cuprate Condensed Matter::Strongly Correlated Electrons Singlet state |
| Zdroj: | Phys. Rev. Lett. PHYSICAL REVIEW LETTERS Physical Review Letters |
| DOI: | 10.1103/PhysRevLett.113.187001 |
| Popis: | We investigate by angle-resolved photoemission the electronic structure of in situ grown tetragonal CuO, a synthetic quasi-two-dimensional edge-sharing cuprate. We show that, in spite of the very different nature of the copper oxide layers, with twice as many Cu in the CuO layers of tetragonal CuO as compared to the CuO2 layers of the high-TTc cuprates, the low-energy electronic excitations are surprisingly similar, with a Zhang-Rice singlet dispersing on weakly coupled cupratelike sublattices. This system should thus be considered as a member of the high-Tc cuprate family, with, however, interesting differences due to the intralayer coupling between the cupratelike sublattices. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|