4D texture of circular dichroism in soft-x-ray photoemission from tungsten

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dc.contributor.authorFedchenko, Olena V.
dc.contributor.authorMedjanik, Katerina
dc.contributor.authorChernov, Sergey V.
dc.contributor.authorKutnyakhov, Dmytro
dc.contributor.authorEllguth, Martin
dc.contributor.authorOelsner, Andreas
dc.contributor.authorSchönhense, Benedikt
dc.contributor.authorPeixoto, Thiago R.F.
dc.contributor.authorLutz, Peter
dc.contributor.authorMin, Chul-hee
dc.contributor.authorReinert, Friedrich T.
dc.contributor.authorDäster, Simon
dc.contributor.authorAcremann, Yves M.
dc.contributor.authorViefhaus, Jens
dc.contributor.authorWurth, Wilfried
dc.contributor.authorBraun, Jürgen
dc.contributor.authorMinár, Jan
dc.contributor.authorEbert, Hubert
dc.contributor.authorElmers, Hans Joachim
dc.contributor.authorSchönhense, Gerd
dc.date.accessioned2019-12-23T11:00:13Z
dc.date.available2019-12-23T11:00:13Z
dc.date.issued2019
dc.description.abstractPrezentujeme detailnú 4D analýzu cirkulárneho dichroizmu meraného vo fotoemisii woflramu(110). Fotoemisia bola meraná pre fotónové energie od 300-1300eV. Experimentálne dáta boli porovnané s výpočtami vrámci jednokrokového modelu fotoemisie.cs
dc.description.abstract-translatedPhotoemission-intensity distributions I-RCP/LCP (E-B, k) measured for right- and left-circularly polarized soft x-rays revealed a large circular dichroism in angular distribution (CDAD) in the 4D parameter space (E-B binding energy, k momentum vector). Full-field k-imaging combined with time-of-flight energy recording at a high-brilliance soft x-ray beamline allowed mapping the CDAD in the bulk Brillouin zone of tungsten and the entire d-band complex within a few hours. CDAD-asymmetries are very high (up to 90%), persist throughout the whole photon-energy range (300-1300 eV) and show a pronounced dependence on momentum k and binding energy E-B, visualized as movies or sequences of cuts through the 4D object. One-step photoemission calculations for the same photon energies show fair agreement with the measured results. In addition to the requirement of a 'handed' experimental geometry, known from previous experiments on adsorbates and surface states, we find an anti-symmetric behavior of the CDAD with respect to two bulk mirror planes. A new symmetry condition along the perpendicular momentum k(z) makes CDAD a valuable tool for an unambiguous identification of high-symmetry planes in direct transitions in the periodic zone scheme. Technically, the method provides a circular polarimeter for soft, tender and hard x-rays.en
dc.format17 s.cs
dc.format.mimetypeapplication/pdf
dc.identifier.citationFEDCHENKO, O. V., MEDJANIK, K., CHERNOV, S. V., KUTNYAKHOV, D., ELLGUTH, M., OELSNER, A., SCHÖNHENSE, B., PEIXOTO, T. R., LUTZ, P., MIN, C. H., REINERT, F. T., DÄSTER, S., ACREMANN, Y. M., VIEFHAUS, J., WURTH, W., BRAUN, J., MINÁR, J., EBERT, H., ELMERS, H. J., SCHÖNHENSE, G. 4D texture of circular dichroism in soft-x-ray photoemission from tungsten. New journal of physics, 2019, roč. 21, č. JAN 18 2019. ISSN 1367-2630.en
dc.identifier.document-number456276000008
dc.identifier.doi10.1088/1367-2630/aaf4cd
dc.identifier.issn1367-2630
dc.identifier.obd43927541
dc.identifier.uri2-s2.0-85062555038
dc.identifier.urihttp://hdl.handle.net/11025/36126
dc.language.isoenen
dc.project.IDEF15_003/0000358/Výpočetní a experimentální design pokročilých materiálů s novými funkcionalitamics
dc.publisherIOP PUBLISHINGen
dc.relation.ispartofseriesNew Journal Of Physicsen
dc.rights© IOP Publishingen
dc.rights.accessopenAccessen
dc.subjectCDAD, SXARPES, DFT, KKRcs
dc.subject.translatedCDAD, SXARPES, DFT, KKRen
dc.title4D texture of circular dichroism in soft-x-ray photoemission from tungstenen
dc.title.alternative4D textúra cirkulárneho dichroizmu vo fotoemissii wolframucs
dc.typečlánekcs
dc.typearticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen

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