Coherent phonons in a semiconductor superlattice studied by femtosecond X-ray diffraction
| Autor: | Michael Woerner, Matias Bargheer, Thomas Elsaesser, Jeong-Ung Woo, N. Zhavoronkov, Y. Gritsai, Dai-Sik Kim |
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| Rok vydání: | 2005 |
| Předmět: |
Diffraction
Materials science Condensed matter physics Phonon business.industry Superlattice Physics::Optics X-ray optics Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter::Materials Science Excited state Femtosecond X-ray crystallography Optoelectronics business Excitation |
| Zdroj: | 2005 Quantum Electronics and Laser Science Conference. |
| DOI: | 10.1109/qels.2005.1548924 |
| Popis: | For the first time femtosecond X-ray diffraction measures the coherent strain connected to a zone-folded longitudinal acoustic phonon optically excited in a GaAs/AlGaAs superlattice, giving direct evidence for the displacive excitation mechanism. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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