Ultrafast sublattice pseudospin relaxation in graphene probed by polarization-resolved photoluminescence
2017 | journal article. A publication with affiliation to the University of Göttingen.
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Ultrafast sublattice pseudospin relaxation in graphene probed by polarization-resolved photoluminescence
Danz, T. ; Neff, A.; Gaida, J. H.; Bormann, R. ; Ropers, C. & Schäfer, S. (2017)
Physical Review. B, 95(24) art. 241412. DOI: https://doi.org/10.1103/PhysRevB.95.241412
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Details
- Authors
- Danz, Thomas ; Neff, Andreas; Gaida, John H.; Bormann, Reiner ; Ropers, Claus ; Schäfer, Sascha
- Abstract
- Electronic pseudospin degrees of freedom in two-dimensional materials exhibit unique carrier-field interactions which allow for advanced control strategies. Here, we investigate ultrafast sublattice pseudospin relaxation in graphene by means of polarization-resolved photoluminescence spectroscopy. A comparison with microscopic Boltzmann simulations allows us to determine a lifetime of the optically aligned pseudospin distribution of 12 +/- 2 fs. This experimental approach extends the toolbox of graphene pseudospintronics, providing additional means to investigate pseudospin dynamics in active devices or under external fields.
- Issue Date
- 2017
- Status
- published
- Publisher
- Amer Physical Soc
- Journal
- Physical Review. B
- ISSN
- 2469-9950
- eISSN
- 2469-9969
- ISSN
- 2469-9969; 2469-9950
- Language
- English
