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Different views on the electronic structure of nanoscale graphene: aromatic molecule versus quantum dot
Zitieren Sie bitte immer diese URN: urn:nbn:de:bvb:20-opus-130184
- Graphene's peculiar electronic band structure makes it of interest for new electronic and spintronic approaches. However, potential applications suffer from quantization effects when the spatial extension reaches the nanoscale. We show by photoelectron spectroscopy on nanoscaled model systems (disc-shaped, planar polyacenes) that the two-dimensional band structure is transformed into discrete states which follow the momentum dependence of the graphene Bloch states. Based on a simple model of quantum wells, we show how the band structure ofGraphene's peculiar electronic band structure makes it of interest for new electronic and spintronic approaches. However, potential applications suffer from quantization effects when the spatial extension reaches the nanoscale. We show by photoelectron spectroscopy on nanoscaled model systems (disc-shaped, planar polyacenes) that the two-dimensional band structure is transformed into discrete states which follow the momentum dependence of the graphene Bloch states. Based on a simple model of quantum wells, we show how the band structure of graphene emerges from localized states, and we compare this result with ab initio calculations which describe the orbital structure.…
Autor(en): | M. Wiessner, N. S. Rodriguez Lastra, J. Ziroff, F. Forster, P. Puschnig, L. Dössel, K. Müllen, A. Schöll, F. Reinert |
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URN: | urn:nbn:de:bvb:20-opus-130184 |
Dokumentart: | Artikel / Aufsatz in einer Zeitschrift |
Institute der Universität: | Fakultät für Physik und Astronomie / Physikalisches Institut |
Sprache der Veröffentlichung: | Englisch |
Titel des übergeordneten Werkes / der Zeitschrift (Englisch): | New Journal of Physics |
Erscheinungsjahr: | 2012 |
Band / Jahrgang: | 14 |
Heft / Ausgabe: | 113008 |
Seitenangabe: | 12 |
Originalveröffentlichung / Quelle: | New Journal of Physics 14 (2012) 113008 (12pp). doi:10.1088/1367-2630/14/11/113008 |
DOI: | https://doi.org/10.1088/1367-2630/14/11/113008 |
Allgemeine fachliche Zuordnung (DDC-Klassifikation): | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Freie Schlagwort(e): | Ag(111); confinement; coronene; energy; films; nanographenes; photoemission; states; vicinal surfaces; well |
Datum der Freischaltung: | 28.11.2016 |
Lizenz (Deutsch): | CC BY-NC-SA: Creative-Commons-Lizenz: Namensnennung, Nicht kommerziell, Weitergabe unter gleichen Bedingungen |