INFLUENCE OF CLEAVAGE IN LIQUID-HELIUM ON THE SHAPE OF THE N=1 EXCITON REFLECTION BAND IN KI AND RBI CRYSTALS

Authors
OCONNELBRONIN AA
Citation
Aa. Oconnelbronin, INFLUENCE OF CLEAVAGE IN LIQUID-HELIUM ON THE SHAPE OF THE N=1 EXCITON REFLECTION BAND IN KI AND RBI CRYSTALS, Journal of physics. Condensed matter, 6(15), 1994, pp. 2847-2852
Citations number
20
Categorie Soggetti
Physics, Condensed Matter
Journal title
Journal of physics. Condensed matter → ACNP
ISSN journal
09538984
Volume
6
Issue
15
Year of publication
1994
Pages
2847 - 2852
Database
ISI
SICI code
0953-8984(1994)6:15<2847:IOCILO>2.0.ZU;2-6
Abstract
A noticeable change in the n = 1 exciton reflection band of KI and RbI crystals exposed to air was revealed after cleavage in liquid helium. This change is explained by disturbance of the near-surface layer by charged surface dislocations and other defects, which appeared after c leavage at a low temperature. A moderate irradiation by photons in the exciton region and/or heating leads to the removal of the disturbance and, correspondingly, to relaxation of the crystal surface.