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Singlet-triplet splittings in free and self-trapped excitons

Song, KS; Leung, CH; Stoneham, AM; (1981) Singlet-triplet splittings in free and self-trapped excitons. Solid State Communications , 37 (12) 949 - 951. 10.1016/0038-1098(81)91192-3. Green open access

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Abstract

We discuss the available experimental data for the singlet-triplet splitting of free and self-trapped excitons in alkali halides. These data are analysed quantitatively using the pseudopotential method of Bartram, Stoneham and Gash. The predictions confirm the trend emerging from the observed data, namely that the splittings are systematically lower for the self-trapped systems. This difference comes principally from the spread of the self-trapped hole onto two ions, and would not be expected, for example, if the hole were localised on a single site.

Type: Article
Title: Singlet-triplet splittings in free and self-trapped excitons
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/0038-1098(81)91192-3
Publisher version: http://dx.doi.org/10.1016/0038-1098(81)91192-3
Language: English
Additional information: Text made available to UCL Discovery by kind permission of Elsevier B.V., 2012
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/59713
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