Optical magnetic circular dichroism in threshold photoemission from a magnetite thin film

6533b7d7fe1ef96bd1269143

RESEARCH PRODUCT

Optical magnetic circular dichroism in threshold photoemission from a magnetite thin film

J. Maul Rafael Ramos K. Hild Sunil K. Arora Tobias Meng M. Kallmayer Igor V. Shvets Hans-joachim Elmers Gerd Schönhense

subject

Magnetic circular dichroism Chemistry Inverse photoemission spectroscopy Analytical chemistry Physics::Optics Angle-resolved photoemission spectroscopy Condensed Matter Physics Molecular physics Magnetic field Condensed Matter::Materials Science Magnetization X-ray magnetic circular dichroism Condensed Matter::Superconductivity Vibrational circular dichroism General Materials Science Circular polarization

description

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(3)O(4)) 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.

year	journal	country	edition	language
2011-06-23	Journal of Physics: Condensed Matter

https://doi.org/10.1088/0953-8984/20/23/235218

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