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dc.contributor.authorMonteseguro, Virginia
dc.contributor.authorSanz, Juan Angel
dc.contributor.authorCuartero, Vero
dc.contributor.authorCova, Federico Hector
dc.contributor.authorAbrikosov, Igor
dc.contributor.authorOlovsson, Weine
dc.contributor.authorPopescu, Catelin
dc.contributor.authorPascarelli, Sakura
dc.contributor.authorGarbarino, Gaston
dc.contributor.authorJonsson, Johan
dc.contributor.authorIrifune, Tetsuo
dc.contributor.authorErrandonea, Daniel
dc.identifier.citationScientific Reports. 2019, 9 (8940)nb_NO
dc.description.abstractThe 5d transition metals have attracted specific interest for high-pressure studies due to their extraordinary stability and intriguing electronic properties. In particular, iridium metal has been proposed to exhibit a recently discovered pressure-induced electronic transition, the so-called core-level crossing transition at the lowest pressure among all the 5d transition metals. Here, we report an experimental structural characterization of iridium by x-ray probes sensitive to both long- and short-range order in matter. Synchrotron-based powder x-ray diffraction results highlight a large stability range (up to 1.4 Mbar) of the low-pressure phase. The compressibility behaviour was characterized by an accurate determination of the pressure-volume equation of state, with a bulk modulus of 339(3) GPa and its derivative of 5.3(1). X-ray absorption spectroscopy, which probes the local structure and the empty density of electronic states above the Fermi level, was also utilized. The remarkable agreement observed between experimental and calculated spectra validates the reliability of theoretical predictions of the pressure dependence of the electronic structure of iridium in the studied interval of compressions.nb_NO
dc.publisherNature Researchnb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titlePhase stability and electronic structure of iridium metal at the megabar range.nb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.source.journalScientific Reportsnb_NO
dc.description.localcodeOpen Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.nb_NO
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