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  Ultrafast sublattice pseudospin relaxation in graphene probed by polarization-resolved photoluminescence

Danz, T., Neff, A., Gaida, J., Bormann, R., Ropers, C., & Schäfer, S. (2017). Ultrafast sublattice pseudospin relaxation in graphene probed by polarization-resolved photoluminescence. Physical Review B, 95(24): 241412(R). doi:10.1103/PhysRevB.95.241412.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000B-5DDF-3 Version Permalink: https://hdl.handle.net/21.11116/0000-000D-0931-2
Genre: Journal Article

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 Creators:
Danz, T., Author
Neff, A., Author
Gaida, J.H., Author
Bormann, R., Author
Ropers, Claus1, Author                 
Schäfer, S., Author
Affiliations:
1Department of Ultrafast Dynamics, MPI for Biophysical Chemistry, Max Planck Society, Göttingen, DE, ou_3371855              

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 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±2fs. This experimental approach extends the toolbox of graphene pseudospintronics, providing additional means to investigate pseudospin dynamics in active devices or under external fields.

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Language(s): eng - English
 Dates: 2017
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevB.95.241412
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 95 (24) Sequence Number: 241412(R) Start / End Page: - Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008