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.


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    Title :

    Coherent phonons in a semiconductor superlattice studied by femtosecond X-ray diffraction


    Contributors:
    Bargheer, M. (author) / Zhavoronkov, N. (author) / Gritsai, Y. (author) / Woo, J.C. (author) / Kim, D.S. (author) / Woerner, M. (author) / Elsaesser, T. (author)


    Publication date :

    2005-01-01


    Size :

    2079899 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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