We investigated the space-charge layer at the surface of heavily doped GaAs(110) by means of HREELS, looking at the surface coupled collective excitations (phonon-plasmon, i.e. plasmarons). We could reproduce the general behaviour of the HREEL spectra based on a dielectric three-layer model, finding a strong value for the value of the plasmon damping.
Vibrational and collective excitations on heavily doped p-type GaAs(110) surface / Biagi, Roberto; Mariani, Carlo; DEL PENNINO, Umberto. - In: VUOTO. - ISSN 0391-3155. - STAMPA. - 20:(1990), pp. 705-706.
Vibrational and collective excitations on heavily doped p-type GaAs(110) surface
BIAGI, Roberto;MARIANI, Carlo;DEL PENNINO, Umberto
1990
Abstract
We investigated the space-charge layer at the surface of heavily doped GaAs(110) by means of HREELS, looking at the surface coupled collective excitations (phonon-plasmon, i.e. plasmarons). We could reproduce the general behaviour of the HREEL spectra based on a dielectric three-layer model, finding a strong value for the value of the plasmon damping.
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