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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-26394

Okuda, T; Lobo-Checa, J; Auwaerter, W; Morscher, M; Hoesch, M; Petrov, V N; Hengsberger, M; Tamai, A; Dolocan, A; Cirelli, C; Corso, M; Muntwiler, M; Klöckner, M; Roos, M; Osterwalder, J; Greber, T (2009). Exchange splitting of the three Γ¯ surface states of Ni(111) from three-dimensional spin- and angle-resolved photoemission spectroscopy. Physical Review. B, Condensed Matter and Materials Physics, 80(18):180404.

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The valence-band electronic structure of a clean Ni(111) surface is investigated by spin-resolved photoemission. At room temperature the orientation of the photoelectron spins on the Bloch sphere and the exchange splitting of surface and bulk states along the surface normal (Γ̅ ) are determined. All investigated states are found to have a sizable exchange splitting >50 meV. Since the splitting is smaller than the intrinsic line width in the spin-integrated spectrum this is only seen with a spin-resolved technique. At room-temperature photoemission reaching above the Fermi level directly shows that the Shockley type surface state S1 has an occupied majority and an unoccupied minority band with a splitting ΔEex=62±15 meV. The surface states below the Fermi energy show a larger exchange splitting for in-plane hybridization [ΔEex(S3)=160 meV] than for out-of-plane hybridization [ΔEex(S2)=55 meV].


11 citations in Web of Science®
11 citations in Scopus®
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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Deposited On:04 Feb 2010 17:15
Last Modified:16 Jun 2016 12:33
Publisher:American Physical Society
Publisher DOI:10.1103/PhysRevB.80.180404

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