Spin-polarized surface state in EuO(100)

Klinkhammer J, Schlipf M, Craes F, Runte S, Michely T, Busse C

Research article (journal)

Abstract

High-quality films of the ferromagnetic semiconductor EuO are grown on epitaxial graphene on Ir(111) and investigated insitu with scanning tunneling microscopy and spectroscopy. Electron scattering at defects leads to standing-wave patterns, manifesting the existence of a surface state in EuO. The surface state is analyzed at different temperatures and energies. We observe a pronounced energy shift of the surface state when cooling down below the Curie temperature TC, which indicates a spin polarization of this state at low temperatures. The experimental results are in agreement with corresponding density functional theory calculations.

Details zur Publikation

Release year: 2014
Language in which the publication is written: English
Link to the full text: http://www.scopus.com/inward/record.url?eid=2-s2.0-84892430486&partnerID=40&md5=aab74f5df36d679fd2997125336ab606