Abstract
Threshold photoemission excited by polarization-modulated ultraviolet femtosecond laser light is exploited for phase-sensitive detection of magnetic circular dichroism (MCD) for a magnetite thin film. Magnetite (Fe 3O4) shows a magnetic circular dichroism of ∼(4.5 0.3) × 10-3 for perpendicularly incident circularly polarized light and a magnetization vector switched parallel and antiparallel to the helicity vector by an external magnetic field. The asymmetry in threshold photoemission is discussed in comparison to the magneto-optical Kerr effect. The optical MCD contrast in threshold photoemission will provide a basis for future laboratory photoemission studies on magnetic surfaces.
Original language | English |
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Article number | 235218 |
Journal | Journal of Physics Condensed Matter |
Volume | 20 |
Issue number | 23 |
DOIs | |
Publication status | Published - 2008 Jun 11 |
Externally published | Yes |
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics