Adlayer influence on Dirac-type surface state at W(110)Show others and affiliations
2021 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 33, no 28, article id 285504Article in journal (Refereed) Published
Abstract [en]
In a combined experimental and theoretical study, we investigated how Fe and Co adlayers on W(110) affect the Dirac-type surface state (DSS). Angle-resolved photoelectron spectroscopy data show an increase in binding energy of 75meV and 107meV for Fe and Co, respectively. In order to identify the origin of the energy shift we performed first-principles calculations of the surface electronic structure. The inward surface relaxation of the uncovered W(110) surface is lifted by the adlayers. This structural change is one reason of the energy shift of the DSS. Furthermore, the Fe and Co adlayers change the surface potential, which results in an additional energy shift of the DSS.
Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2021. Vol. 33, no 28, article id 285504
Keywords [en]
ARPES, Dirac-type surface state, W(110), surface electronic structure, thin films
National Category
Theoretical Chemistry
Identifiers
URN: urn:nbn:se:oru:diva-91679DOI: 10.1088/1361-648X/abfdf3ISI: 000657950500001PubMedID: 33946058Scopus ID: 2-s2.0-85107714520OAI: oai:DiVA.org:oru-91679DiVA, id: diva2:1553536
Funder
Swedish Research Council, 2019-03666 2020/21-14 2020/5-4242021-05-102021-05-102021-08-31Bibliographically approved