Short wavelength, spin-polarized quantum-well states in high quality Cu films on FCC-Co(1 0 0)

The electronic structure of ultrathin Cu films deposited on top of an FCC-Co(1 0 0) film has been studied by angle- and spin-resolved photoemission. Deposition at liquid-nitrogen temperature allows the formation of sharp interfaces that produces well-defined quantum-well states in the Cu valence ban...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 1999, Vol.203 (1), p.126-128
Main Authors: Ortega, J.E., Närmann, A., Altmann, K.N., O'Brien, W., Seo, D.J., Himpsel, F.J., Segovia, P., Mascaraque, A., Michel, E.G.
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron and ion emission by liquids and solids
impact phenomena
Electronic states
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Electronic transport in interface structures
Exact sciences and technology
Interfaces, heterostructures, nanostructures
Magnetic coupling
Metal-to-metal contacts
Metals. Metallurgy
Multilayers
Photoemission and photoelectron spectra
Physics
Quantum-well states
Thin films
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Summary:The electronic structure of ultrathin Cu films deposited on top of an FCC-Co(1 0 0) film has been studied by angle- and spin-resolved photoemission. Deposition at liquid-nitrogen temperature allows the formation of sharp interfaces that produces well-defined quantum-well states in the Cu valence band. Furthermore, short-wavelength quantum-well states originating from the neck of the Cu Fermi surface are only visible after low-temperature deposition. Spin-resolved spectra show that these states, which are predicted to dominate oscillatory magnetic coupling in multilayers, exhibit minority spin character.
ISSN:0304-8853
DOI:10.1016/S0304-8853(99)00210-3