Momentum alignment of photoexcited carriers in graphene
A linearly polarized excitation is shown to create a strongly anisotropic distribution of photoexcited carriers in graphene, where the momenta of photo-excited carriers are aligned preferentially normal to the polarization plane. This effect offers an experimental tool to generate highly direction...
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2012
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oai:animorepository.dlsu.edu.ph:faculty_research-81002022-10-19T01:02:17Z Momentum alignment of photoexcited carriers in graphene Hartmann, Richard R. Portnoi, Mikhail E. A linearly polarized excitation is shown to create a strongly anisotropic distribution of photoexcited carriers in graphene, where the momenta of photo-excited carriers are aligned preferentially normal to the polarization plane. This effect offers an experimental tool to generate highly directional photo-excited carriers which could assist in the investigation of 11direction-dependent phenomena" in graphene-based nanostructures. The depolarization of hot photoluminescence is used to study relaxation processes in graphene, both free standing and grown on silicon carbide. This analysis is extended to include the effect of a magnetic field, thereby allowing one to obtain the momentum relaxation times of hot electrons. 2012-09-10T07:00:00Z text https://animorepository.dlsu.edu.ph/faculty_research/7396 Faculty Research Work Animo Repository Graphene Electronic excitation Relaxation phenomena Physics |
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De La Salle University |
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De La Salle University Library |
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Asia |
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Philippines Philippines |
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DLSU Institutional Repository |
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Graphene Electronic excitation Relaxation phenomena Physics |
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Graphene Electronic excitation Relaxation phenomena Physics Hartmann, Richard R. Portnoi, Mikhail E. Momentum alignment of photoexcited carriers in graphene |
| description |
A linearly polarized excitation is shown to create a strongly anisotropic distribution of photoexcited carriers in graphene, where the momenta of photo-excited carriers are aligned preferentially normal to the polarization plane. This effect offers an experimental tool to generate highly directional photo-excited carriers which could assist in the investigation of 11direction-dependent phenomena" in graphene-based nanostructures. The depolarization of hot photoluminescence is used to study relaxation processes in graphene, both free standing and grown on silicon carbide. This analysis is extended to include the effect of a magnetic field, thereby allowing one to obtain the momentum relaxation times of hot electrons. |
| format |
text |
| author |
Hartmann, Richard R. Portnoi, Mikhail E. |
| author_facet |
Hartmann, Richard R. Portnoi, Mikhail E. |
| author_sort |
Hartmann, Richard R. |
| title |
Momentum alignment of photoexcited carriers in graphene |
| title_short |
Momentum alignment of photoexcited carriers in graphene |
| title_full |
Momentum alignment of photoexcited carriers in graphene |
| title_fullStr |
Momentum alignment of photoexcited carriers in graphene |
| title_full_unstemmed |
Momentum alignment of photoexcited carriers in graphene |
| title_sort |
momentum alignment of photoexcited carriers in graphene |
| publisher |
Animo Repository |
| publishDate |
2012 |
| url |
https://animorepository.dlsu.edu.ph/faculty_research/7396 |
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1767196698697793536 |