Abstract
A photodissociation of interstitial and in single-crystalline Si by a laser field at 532 nm is reported. It is shown that in the course of Raman scattering measurements with a power density of around W/ the ) signal decreases with a characteristic time of a few minutes. At temperatures below 100 K the molecule transforms into a metastable state known as , which includes one hydrogen atom located at the bond-centered site and the second one at the antibonding position along the same direction. At temperatures above 100 K both dimers dissociate, whereby the products of fragmentation, inaccessible for the Raman scattering, are proposed to be atomic interstitials.
- Received 4 March 2022
- Accepted 14 July 2022
DOI:https://doi.org/10.1103/PhysRevA.106.013116
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