Universität zu Köln

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
Creators:	Creators Email ORCID ORCID Put Code Beye, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schreck, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sorgenfrei, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Trabant, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pontius, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schuessler-Langeheine, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Wurth, W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Foehlisch, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
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
Uncontrolled Keywords:	Keywords Language ELECTRONIC-STRUCTURE; SCATTERING; OPERATION; LASER Multiple languages Multidisciplinary Sciences Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/47595