Journal Article

PUBDB-2024-00969

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Experimental and computational study of the core-level crossing transition in iridium at high pressure

Storm, C. (Corresponding author)Extern* ; Woolman, G. A. ; Lonsdale, C. M.Extern*XFEL.EU* ; McHardy, J. D.Extern*XFEL.EU* ; Duff, M. J.Extern* ; Ackland, G. J.Extern* ; McMahon, M. I.Extern*

2024
Inst. Woodbury, NY

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Please use a persistent id in citations: doi:10.1103/PhysRevB.109.024101  doi:10.3204/PUBDB-2024-00969

Abstract: A core-level crossing (CLC) resulting from extreme compression has been calculated to occur in Ir metal at 80 GPa, analogous to a transition previously reported in Os at 392 GPa. We present results from static high-pressure diffraction experiments and theoretical investigations on the compressive behavior of Ir up to 159 GPa, well above the calculated CLC transition pressure. Neither our experimental nor computational results find evidence for a CLC over this pressure range, and instead, our first-principles calculations suggest that the CLC occurs in Ir at the much higher pressure of 400 GPa. Furthermore, computational analysis of the CLC in Ir, combined with previous work on Os, indicates that CLCs at high pressure are not experimentally detectable.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)

Experiment(s):

1. PETRA Beamline P02.2 (PETRA III)

Appears in the scientific report 2024

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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