Spin-polarized scanning tunneling spectroscopy of dislocation lines in Fe films on W(1 1 0)
| Autor: | K. von Bergmann, O. Pietzsch, André Kubetzka, Matthias Bode, Roland Wiesendanger |
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| Rok vydání: | 2006 |
| Předmět: |
Materials science
Condensed matter physics Scanning tunneling spectroscopy Binding energy Fermi level Spin polarized scanning tunneling microscopy Condensed Matter Physics Spectral line Electronic Optical and Magnetic Materials law.invention Condensed Matter::Materials Science symbols.namesake Ferromagnetism law symbols Scanning tunneling microscope Dislocation |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 304:1-5 |
| ISSN: | 0304-8853 |
| Popis: | We have studied the spin-resolved electronic properties of dislocation lines on the Fe double-layer (DL) on W(1 1 0) by spin-polarized scanning tunneling spectroscopy. The data reveal that the dislocation lines are ferromagnetically ordered with the magnetic contrast exhibiting a pronounced bias-dependence. By comparing tunneling spectra which were measured on the pseudomorphic DL and at different lateral separation from the dislocation line, we find a pronounced shift of a peak which originally appears at positive sample bias towards the Fermi level E F . In contrast, the binding energy of a peak just below E F remains constant but increases in intensity. This causes a pronounced modification of the bias voltage-dependent magnetic asymmetry. |
| Databáze: | OpenAIRE |
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