Title
Direct observation of electron self-trapping in <tex>$PbCl_{2}$</tex> crystals
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Lancaster, Pa ,
Subject
Physics
Source (journal)
Physical review : B : condensed matter and materials physics. - Lancaster, Pa, 1998 - 2015
Volume/pages
48(1993) :13 , p. 9575-9580
ISSN
1098-0121
1550-235X
ISI
A1993MC11600049
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Direct experimental evidence is reported for the self-trapping of electrons produced at 80 K by x-ray irradiation or by UV illumination above the band gap in pure, orthorhombic (D2h16) PbCl2 crystals. The ESR analysis demonstrates that the electron is trapped at a pair of nearest-neighbor substitutional Pb2+ ions along the a direction, resulting in a paramagnetic Pb-2(3+) molecular ion with electronic configuration complementary to that of the (halogen)2- self-trapped hole center in the alkali halides. The results of this paper suggest that the self-trapped exciton in PbCl2 consists of a hole trapped in an excited orbital around the Pb-2(3+) center.
Full text (open access)
https://repository.uantwerpen.be/docman/irua/1abd00/4424.pdf
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