Structural Change Induced by Electronic Excitation on GaP Surfaces
- 21 December 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 59 (25) , 2883-2886
- https://doi.org/10.1103/physrevlett.59.2883
Abstract
Structural change of surfaces induced by irradiation with laser pulses in the photon energy region between the indirect and direct band gaps has been investigated. A dip was found near the indirect band-gap energy in the relation between the photon energy and the threshold laser fluence above which the change from the (17×17) reconstructed structure to the (1×1) structure occurs. It is concluded that the structural change induced by laser pulses near the indirect band-gap photon energy is due to surface electronic excitation.
Keywords
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