Self-organized formation of chemical bonding in misfit-layered bismuth-based cobaltites
| Autor: | Sho-ichi Takakura, Junpei Azuma, Isamu Yamamoto, Makoto Maki |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Radiation
Photon Materials science Condensed matter physics Scattering chemistry.chemical_element Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Electronic states Bismuth Chemical bond chemistry Transmission electron microscopy Physical and Theoretical Chemistry Spectroscopy Bloch wave |
| Zdroj: | Journal of Electron Spectroscopy and Related Phenomena. 232:95-99 |
| ISSN: | 0368-2048 |
| Popis: | Angle-resolved photoemission measurements have been performed on a commensurate system [Bi2Ba2O4]0.50CoO2 with various photon energies. The results show that the Bloch waves propagate through the interface between CoO2 and Bi2Ba2O4 structures, contrasting with a previous study in an incommensurate system [Bi2Sr2O4]0.51CoO2. On the other hand, transmission electron microscopy (TEM) measurements indicate that there is a non-negligible amount of scattering between the adjacent substructures. We present a detailed comparison of TEM images for three different misfit compounds. The results demonstrate that the self-organization at the atomic level enables to stabilize the misfit structure and modifies the electronic states in those systems. |
| Databáze: | OpenAIRE |
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