Seiler, A.
, Feigerle, C.
, Pena, J.
, Celotta, R.
and Pierce, D.
(1985),
Connection Between Surface Magnetism and Electronic Structure of Oxygen on Ni(110), Journal of Applied Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=620245 (Accessed April 30, 2026)
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Connection Between Surface Magnetism and Electronic Structure of Oxygen on Ni(110)
Published
Author(s)
A Seiler, C Feigerle, J Pena, ,
Abstract
The d-band holes which give rise to ferromagnetism in Ni can be directly observed by spin-polarized inverse photoelectron spectroscopy (SPIPES). Only incident electrons polarized in the minority spin direction can fall into unfilled minority spin states and radiate a detected photon. On dissociative chemisorption of O2 we observe a reduction in the number of minority spin d holes. It is this change in electronic structure which gives rise to a decrease in magnetization. A background of minority and majority spin states remains essentially unchanged. Further exposure to oxygen causes formation of NiO; the surface magnetization goes to zero, and a completely different SPIPES spectrum is observed. The relative importance of d electrons and s, p electrons in chemisorptive bonding on Ni has been much discussed. These data suggest that the d states interact strongly with the oxygen and that this interaction has a profound influence on the surface magnetism.Citation
Journal of Applied Physics
Volume
57
Issue
8
Pub Type
Journals
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Created January 1, 1985, Updated April 21, 2026