Beye, M., Schreck, S., Sorgenfrei, F., Trabant, C., Pontius, N., Schuessler-Langeheine, C., Wurth, W. and Foehlisch, A. (2013). Stimulated X-ray emission for materials science. Nature, 501 (7466). S. 191 - 197. LONDON: NATURE PUBLISHING GROUP. ISSN 1476-4687
Full text not available from this repository.Abstract
Resonant inelastic X-ray scattering and X-ray emission spectroscopy can be used to probe the energy and dispersion of the elementary low-energy excitations that govern functionality in matter: vibronic, charge, spin and orbital excitations(1-7). A key drawback of resonant inelastic X-ray scattering has been the need for high photon densities to compensate for fluorescence yields of less than a per cent for soft X-rays(8). Sample damage from the dominant non-radiative decays thus limits the materials to which such techniques can be applied and the spectral resolution that can be obtained. A means of improving the yield is therefore highly desirable. Here we demonstrate stimulated X-ray emission for crystalline silicon at photon densities that are easily achievable with free-electron lasers(9). The stimulated radiative decay of core excited species at the expense of non-radiative processes reduces sample damage and permits narrow-bandwidth detection in the directed beam of stimulated radiation. We deduce how stimulated X-ray emission can be enhanced by several orders of magnitude to provide, with high yield and reduced sample damage, a superior probe for low-energy excitations and their dispersion in matter. This is the first step to bringing nonlinear X-ray physics in the condensed phase from theory(10-16) to application.
Item Type: | Journal Article | ||||||||||||||||||||||||||||||||||||
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URN: | urn:nbn:de:hbz:38-475957 | ||||||||||||||||||||||||||||||||||||
DOI: | 10.1038/nature12449 | ||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | Nature | ||||||||||||||||||||||||||||||||||||
Volume: | 501 | ||||||||||||||||||||||||||||||||||||
Number: | 7466 | ||||||||||||||||||||||||||||||||||||
Page Range: | S. 191 - 197 | ||||||||||||||||||||||||||||||||||||
Date: | 2013 | ||||||||||||||||||||||||||||||||||||
Publisher: | NATURE PUBLISHING GROUP | ||||||||||||||||||||||||||||||||||||
Place of Publication: | LONDON | ||||||||||||||||||||||||||||||||||||
ISSN: | 1476-4687 | ||||||||||||||||||||||||||||||||||||
Language: | English | ||||||||||||||||||||||||||||||||||||
Faculty: | Unspecified | ||||||||||||||||||||||||||||||||||||
Divisions: | Unspecified | ||||||||||||||||||||||||||||||||||||
Subjects: | no entry | ||||||||||||||||||||||||||||||||||||
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URI: | http://kups.ub.uni-koeln.de/id/eprint/47595 |
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