Chemical origin of polarization-dependent photoinduced changes in an As{sub 36}Se{sub 64} glass film via in situ synchrotron x-ray photoelectron spectroscopy

Journal Article · Sun Feb 01 00:00:00 EST 2009 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.79.054204· OSTI ID:21192531

Antoine, K; Jain, H ^[1]; Vlcek, M ^[2]; Senanayake, S D ^[3]; Drabold, D A ^[4]

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1. Department of Materials Science and Engineering and Center for Optical Technologies, Lehigh University, Bethlehem, Pennsylvania 18015-1539 (United States)
2. Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, 532 10 Pardubice (Czech Republic)
3. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6201 (United States)
4. Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701-2979 (United States)

Using in situ synchrotron x-ray photoelectron spectroscopy, we obtained high-resolution As 3d and Se 3d spectra of Se-rich As{sub 36}Se{sub 64} glassy films during illumination with band-gap light. We report direct experimental evidence of the chemical origin of the light-induced scalar permanent change in the structure and, more interestingly, an indication of the chemical origin of the light-induced polarization-dependent (vector) effects. Our data show that the As atom plays a key role in both the permanent scalar effect and the vector effect. The latter is explained by the polarization-dependent interaction of homopolar -As-As- bonds in As{sub 4}Se{sub 4} clusters with the band-gap light. The chemical reaction resulting from illumination explains anisotropic properties such as permanent light-induced mass transport.

• OSTI ID: 21192531
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 79, Issue 5; Other Information: DOI: 10.1103/PhysRevB.79.054204; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANISOTROPY
ARSENIC COMPOUNDS
ATOMS
CHALCOGENIDES
CHEMICAL BONDS
CHEMICAL REACTIONS
ELECTRONIC STRUCTURE
ENERGY GAP
FILMS
GLASS
ILLUMINANCE
INTERACTIONS
MASS
POLARIZATION
RESOLUTION
SCALARS
SELENIUM COMPOUNDS
SPECTRA
SYNCHROTRON RADIATION
X-RAY PHOTOELECTRON SPECTROSCOPY