Tailoring the intrinsic doping at YBa2Cu3O7-metal-contacts
- Charge redistribution at interfaces between high-Tc superconductors and metals is problematic for technological applications due to local variations in the electronic structure. In particular, the interface affects the charge density in the superconducting CuO2-planes. For obtaining quantitative insight into effects of interface doping, we address YBCO-metal-contacts by means of first principle supercell calculations within density functional theory. On the one hand, we find that the CuO2-planes are intrinsically electron-overdoped, i.e. hole-underdoped. On the other hand, very strong effects on the near-contact electronic states are also caused by electronegative impurities incorporated into the metal. Doping of such impurities consequently paves the way for a controlled re-extracting of charge from intrinsically doped interfaces and, therefore, for a tailoring of the interface properties.
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| Author: | Udo SchwingenschlöglGND, Cosima SchusterGND |
|---|---|
| URN: | urn:nbn:de:bvb:384-opus4-929566 |
| Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/92956 |
| ISSN: | 1742-6596OPAC |
| Parent Title (English): | Journal of Physics: Conference Series |
| Publisher: | IOP Publishing |
| Type: | Article |
| Language: | English |
| Date of first Publication: | 2009/03/01 |
| Publishing Institution: | Universität Augsburg |
| Release Date: | 2022/02/24 |
| Volume: | 150 |
| Issue: | 5 |
| First Page: | 052227 |
| DOI: | https://doi.org/10.1088/1742-6596/150/5/052227 |
| Institutes: | Mathematisch-Naturwissenschaftlich-Technische Fakultät |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik | |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Lehrstuhl für Theoretische Physik II | |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Licence (German): |  CC-BY 4.0: Creative Commons: Namensnennung (mit Print on Demand) |
