% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Beye:167779, author = {Beye, M. and Schreck, S. and Sorgenfrei, F. and Trabant, C. and Pontius, N. and Schüßler-Langeheine, C. and Wurth, W. and Föhlisch, A.}, title = {{S}timulated {X}-ray emission for materials science}, journal = {Nature}, volume = {501}, number = {7466}, issn = {1476-4687}, address = {London}, publisher = {Macmillan28177}, reportid = {DESY-2014-02110}, pages = {191 - 194}, year = {2013}, note = {© Macmillan Publishers Limited.}, 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. 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-rays8. 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. 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 to application.}, cin = {DOOR / UNI/EXP}, ddc = {070}, cid = {I:(DE-H253)HAS-User-20120731 / $I:(DE-H253)UNI_EXP-20120731$}, pnm = {FLASH Beamline PG2 (POF2-54G16) / FLASH Beamline BL2 (POF2-54G16)}, pid = {G:(DE-H253)POF2-PG2-20130405 / G:(DE-H253)POF2-BL2-20130405}, experiment = {EXP:(DE-H253)F-PG2-20150101 / EXP:(DE-H253)F-BL2-20150101}, typ = {PUB:(DE-HGF)16}, UT = {WOS:000324244900034}, pubmed = {pmid:23965622}, doi = {10.1038/nature12449}, url = {https://bib-pubdb1.desy.de/record/167779}, }