| Zugriffsnummer | 52253 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Structural, chemical, and magnetic investigation of a graphene/cobalt/platinum multilayer system on silicon carbide |
| Autor(in); Institution |
Weinert, Phillip; Fakultät Physik/DELTA, TU Dortmund University, Dortmund, GERMANY
Hochhaus, J.; Fakultät Physik/DELTA, TU Dortmund University, Dortmund, GERMANY
Kesper, L.; Fakultät Physik/DELTA, TU Dortmund University, Dortmund, GERMANY
Appel, R.; Fakultät Physik/DELTA, TU Dortmund University, Dortmund, GERMANY
Hilgers, S.; Fakultät Physik/DELTA, TU Dortmund University, Dortmund, GERMANY
Schmitz, M.; Fakultät Physik/DELTA, TU Dortmund University, Dortmund, GERMANY
Höning, R.; Fakultät Physik/DELTA, TU Dortmund University, Dortmund, GERMANY
Kronast, F.; Helmholtz-Zentrum Berlin für Materialien und Energie, Berlin, GERMANY
Valencia, S.; Helmholtz-Zentrum Berlin für Materialien und Energie, Berlin, GERMANY
Berges, U.; Fakultät Physik/DELTA, TU Dortmund University, Dortmund, GERMANY
Westphal, C.; Fakultät Physik/DELTA, TU Dortmund University, Dortmund, GERMANY
|
| Quelle/Jahr | Nanotechnology: 35 (2023), 16, 1 - 13 |
| Artikelnummer | 165702 |
| ISSN | 0957-4484 (print) ; 1361-6528 (online) |
| DOI | |
| Verlag | Bristol: IOP Publishing |
| Freie Schlagworte | epitaxial graphene ; metal intercalation ; x-ray photoemission electron microscopy ; magnetic imaging ; Dzyaloshinskii-Moriya interaction ; graphene-ferromagnet interface |
| Zusammenfassung | We investigate the magnetic interlayer coupling and domain structure of ultra-thin ferromagnetic (FM) cobalt (Co) layers embedded between a graphene (G) layer and a platinum (Pt) layer on a silicon carbide (SiC) substrate (G/Co/Pt on SiC). Experimentally, a combination of x-ray photoemission electron microscopy with x-ray magnetic circular dichroism has been carried out at the Co L-edge. Furthermore, structural and chemical properties of the system have been investigated using low energy electron diffraction (LEED) and x-ray photoelectron spectroscopy (XPS). In situ LEED patterns revealed the crystalline structure of each layer within the system. Moreover, XPS confirmed the presence of quasi-freestanding graphene, the absence of cobalt silicide, and the appearance of two silicon carbide surface components due to Pt intercalation. Thus, the Pt-layer effectively functions as a diffusion barrier. The magnetic structure of the system was unaffected by the substrate’s step structure. Furthermore, numerous vortices and anti-vortices were found in all samples, distributed all over the surfaces, indicating Dzyaloshinskii–Moriya interaction. Only regions with a locally increased Co-layer thickness showed no vortices. Moreover, unlike in similar systems, the magnetization was predominantly in-plane, so no perpendicular magnetic anisotropy was found. |
| Kostenfreier Zugang | Open Access Hybrid |
| Rechteinformation | CC BY 4.0 ; Creative Commons Attribution 4.0 License |
| Themenbereich der Metrologie | Elektrizität und Magnetismus |
Zitierung
Kruskopf, M., Chatterjee, A., Weinert, P., Hochhaus, J., Kesper, L., Appel, R., Hilgers, S., Schmitz, M., Höning, R., Kronast, F., Valencia, S., Berges, U., & Westphal, C. (2023). Structural, chemical, and magnetic investigation of a graphene/cobalt/platinum multilayer system on silicon carbide. Nanotechnology, 35(16), 1–13. https://doi.org/10.1088/1361-6528/ad1d7b