Experimental and theoretical evidence for pressure-induced metallization in FeO with rocksalt-type structure

Kenji Ohta, R. E. Cohen, Kei Hirose, Kristjan Haule, Katsuya Shimizu, Yasuo Ohishi

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115 Scopus citations

Abstract

Electrical conductivity of FeO was measured up to 141 GPa and 2480 K in a laser-heated diamond-anvil cell. The results show that rock-salt (B1) type structured FeO metallizes at around 70 GPa and 1900 K without any structural phase transition. We computed fully self-consistently the electronic structure and the electrical conductivity of B1 FeO as a function of pressure and temperature, and found that although insulating as expected at ambient condition, B1 FeO metallizes at high temperatures, consistent with experiments. The observed metallization is related to spin crossover.

Original languageEnglish (US)
Article number026403
JournalPhysical review letters
Volume108
Issue number2
DOIs
StatePublished - Jan 12 2012

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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