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Pressure-induced va...
Pressure-induced valence change in YbAl3 : A combined high-pressure inelastic x-ray scattering and theoretical investigation
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Kumar, Ravhi S. (författare)
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Svane, Axel (författare)
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- Vaitheeswaran, Ganapathy (författare)
- KTH,Tillämpad materialfysik
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- Kanchana, Venkatakrishnan (författare)
- KTH,Tillämpad materialfysik
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Bauer, Eric D. (författare)
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Hu, Michael (författare)
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Nicol, Malcolm F. (författare)
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Cornelius, Andrew L. (författare)
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(creator_code:org_t)
- 2008
- 2008
- Engelska.
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Ingår i: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 78:7, s. 075117-
- Relaterad länk:
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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
- High-resolution x-ray-absorption (XAS) experiments in the partial fluorescence yield mode (PFY) and resonant inelastic x-ray emission (RXES) measurements were performed on the intermediate-valence compound YbAl3 under pressure of up to 38 GPa. The results of the YbAl3 PFY-XAS and RXES studies show that the valence of Yb increases smoothly from 2.75 at ambient pressure to 2.93 at 38 GPa. In situ angle-dispersive synchrotron high-pressure x-ray-diffraction experiments carried out using a diamond cell at room temperature show that the ambient pressure cubic phase is stable up to 40 GPa. The results obtained from self-interaction corrected local spin density-functional calculations to understand the pressure effect on the Yb valence and compressibility are in good agreement with the experimental results.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Annan teknik -- Övrig annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies -- Other Engineering and Technologies not elsewhere specified (hsv//eng)
Nyckelord
- SPIN-DENSITY APPROXIMATION; ELECTRONIC-STRUCTURE; YB COMPOUNDS; TEMPERATURE-DEPENDENCE; PHOTOELECTRON-SPECTROSCOPY; SYSTEMS; INSTABILITIES; TRANSPORT; CERIUM; CE
- Material physics with surface physics
- Materialfysik med ytfysik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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