at Google ScholarTitle data
Chae, Dong-Hun ; Utikal, Tobias ; Weisenburger, Siegfried ; Giessen, Harald ; von Klitzing, Klaus ; Lippitz, Markus ; Smet, Jurgen:
Excitonic Fano Resonance in Free-Standing Graphene.
In: Nano Letters.
Vol. 11
(2011)
Issue 3
.
- pp. 1379-1382.
ISSN 1530-6992
DOI: https://doi.org/10.1021/nl200040q
Abstract in another language
We investigate the role of electron-hole correlations in the absorption of free-standing monolayer and bilayer graphene using optical transmission spectroscopy from 1.5 to 5.5 eV. Line shape analysis demonstrates that the ultraviolet region is dominated by an asymmetric Fano resonance. We attribute this to an excitonic resonance that forms near the van Hove singularity at the saddle point of the band structure and couples to the Dirac continuum. The Fano model quantitatively describes the experimental data all the way down to the infrared. In contrast, the common noninteracting particle picture cannot describe our data. These results suggest a profound connection between the absorption properties and the topology of the graphene band structure.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | Yes |
| Institutions of the University: | Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics III - Nanooptics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics III - Nanooptics > Chair Experimental Physics III - Nanooptics - Univ.-Prof. Dr. Markus Lippitz |
| Result of work at the UBT: | No |
| DDC Subjects: | 500 Science 500 Science > 500 Natural sciences 500 Science > 530 Physics |
| Date Deposited: | 16 Dec 2015 10:04 |
| Last Modified: | 24 Jan 2022 14:48 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/28960 |