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Phase stability and...
Phase stability and electronic structure of iridium metal at the megabar range
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- Monteseguro, V (författare)
- Univ Valencia, Spain; European Radiat Synchrotron Facil, France
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- Sans, J. A. (författare)
- Univ Politecn Valencia, Spain
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- Cuartero, V (författare)
- European Radiat Synchrotron Facil, France; Ctr Univ Def Zaragoza, Spain
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- Cova, F. (författare)
- European Radiat Synchrotron Facil, France
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- Abrikosov, Igor (författare)
- Linköpings universitet,Teoretisk Fysik,Tekniska fakulteten,Natl Univ Sci and Technol MISIS, Russia
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- Olovsson, Weine, 1975- (författare)
- Linköpings universitet,Tekniska fakulteten,Teoretisk Fysik
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- Popescu, C. (författare)
- ALBA CELLS, Spain
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- Pascarelli, S. (författare)
- European Radiat Synchrotron Facil, France
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- Garbarino, G. (författare)
- European Radiat Synchrotron Facil, France
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- Jönsson, Johan (författare)
- Linköpings universitet,Teoretisk Fysik,Tekniska fakulteten
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- Irifune, T. (författare)
- Ehime Univ, Japan; Tokyo Inst Technol, Japan
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- Errandonea, D. (författare)
- Univ Valencia, Spain
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(creator_code:org_t)
- 2019-06-20
- 2019
- Engelska.
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Ingår i: Scientific Reports. - : Nature Publishing Group. - 2045-2322. ; 9
- Relaterad länk:
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https://doi.org/10.1...
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https://liu.diva-por... (primary) (Raw object)
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https://www.nature.c...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The 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.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
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- art (ämneskategori)
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Monteseguro, V
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Sans, J. A.
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Cuartero, V
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Cova, F.
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Abrikosov, Igor
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Olovsson, Weine, ...
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visa fler...
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Popescu, C.
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Pascarelli, S.
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Garbarino, G.
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Jönsson, Johan
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Irifune, T.
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Errandonea, D.
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visa färre...
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- NATURVETENSKAP
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Linköpings universitet