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- W4248445528 abstract "A study of the first-order Verwey transition in single-crystal Fe3O4 using high-resolution temperature dependent (100 – 300K) photoemission spectroscopy is reported. Fe3O4 exhibits a gap of ∼ 70 meV in the occupied part of the density of states(DOS) below the transition temperature, Tv = 122 K. On increasing the temperature above Tv, the gap in the DOS is closed thus establishing a metal-semiconductor transition. The Fe 3d derived features arising from Fe3+ (eg2) majority and Fe2+ (t2g1) minority spin states responsible for the transition, retain their character just above the transition but merge into a single feature by 300 K. Simultaneously, the DOS at Ef increases systematically in the metallic phase. The results indicate a gradual change in the short-range order for T > Tv which gives rise to the non-metallic like electrical conductivity observed just above Tv." @default.
- W4248445528 created "2022-05-12" @default.
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- W4248445528 date "1996-05-01" @default.
- W4248445528 modified "2023-09-26" @default.
- W4248445528 title "Electronic structure of Fe3O4 across the Verwey transition" @default.
- W4248445528 doi "https://doi.org/10.1016/0368-2048(96)02687-4" @default.
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