Luminescence lineshape of free excitons and electron-hole drops in Si |
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| Authors: | P Voisin M Voos C Benoîot àla Guillaume |
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| Institution: | Groupe de Physique des Solides de l''Ecole Normale Supérieure, Université Paris 7, Tour 23, 2 Place Jussieu, 75005 Paris, France |
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| Abstract: | We study experimentally and theoretically the lineshape of the TO-LO and TA phonon assisted luminescence of free excitons and electron-hole drops in Si. We show that, in the case of the TA replica, the appropriate electron-phonon matrix element should be taken k-dependent, contrary to previous investigations. |
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