Pressure-induced crossing of the core levels in 5d metals
Publication year
2016Author(s)
Number of pages
6 p.
Source
Physical Review B, 93, 20, (2016), pp. 6-12ISSN
Publication type
Article / Letter to editor

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Organization
Theory of Condensed Matter
Journal title
Physical Review B
Volume
vol. 93
Issue
iss. 20
Page start
p. 6
Page end
p. 12
Subject
Theory of Condensed MatterAbstract
A pressure-induced interaction between core electrons, the core-level crossing (CLC) transition, has been observed in hcp Os at P approximate to 400 GPa [L. Dubrovinsky et al., Nature (London) 525, 226 (2015)]. By carrying out a systematic theoretical study for all metals of the 5d series (Hf, Ta, W, Re, Os, Ir, Pt, Au) we have found that the CLC transition is a general effect for this series of metals. While in Pt it occurs at approximate to 1500 GPa, at a pressure substantially higher than in Os, in Ir it occurs already at 80 GPa. Moreover, we predict that in Re the CLC transition may take place already at ambient pressure. We explain the effect of the CLC and analyze the shift of the transition pressure across the series within the Thomas-Fermi model. In particular, we show that the effect has many common features with the atomic collapse in rare-earth elements.
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- Academic publications [227437]
- Electronic publications [107154]
- Faculty of Science [33757]
- Open Access publications [76289]
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