UZH-Logo

Exchange splitting of the three Γ¯ surface states of Ni(111) from three-dimensional spin- and angle-resolved photoemission spectroscopy


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.

Abstract

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].

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].

Citations

11 citations in Web of Science®
11 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

87 downloads since deposited on 04 Feb 2010
37 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2009
Deposited On:04 Feb 2010 17:15
Last Modified:16 Jun 2016 12:33
Publisher:American Physical Society
ISSN:1098-0121
Publisher DOI:10.1103/PhysRevB.80.180404
Permanent URL: http://doi.org/10.5167/uzh-26394

Download

[img]
Preview
Content: Accepted Version
Filetype: PDF
Size: 1MB
View at publisher

TrendTerms

TrendTerms displays relevant terms of the abstract of this publication and related documents on a map. The terms and their relations were extracted from ZORA using word statistics. Their timelines are taken from ZORA as well. The bubble size of a term is proportional to the number of documents where the term occurs. Red, orange, yellow and green colors are used for terms that occur in the current document; red indicates high interlinkedness of a term with other terms, orange, yellow and green decreasing interlinkedness. Blue is used for terms that have a relation with the terms in this document, but occur in other documents.
You can navigate and zoom the map. Mouse-hovering a term displays its timeline, clicking it yields the associated documents.

Author Collaborations