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

K. Hild; J. Maul; T. Meng; M. Kallmayer; G. Schönhense; H. J. Elmers; Rafael Enrique Ramos Amigo; S. K. Arora; I. V. Shvets

doi:10.1088/0953-8984/20/23/235218

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

K. Hild, J. Maul, T. Meng, M. Kallmayer, G. Schönhense, H. J. Elmers, Rafael Enrique Ramos Amigo, S. K. Arora, I. V. Shvets

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

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
Article number	235218
Journal	Journal of Physics Condensed Matter
Volume	20
Issue number	23
DOIs	https://doi.org/10.1088/0953-8984/20/23/235218
Publication status	Published - 2008 Jun 11
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

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Optical magnetic circular dichroism in threshold photoemission from a magnetite thin film. / Hild, K.; Maul, J.; Meng, T.; Kallmayer, M.; Schönhense, G.; Elmers, H. J.; Ramos Amigo, Rafael Enrique; Arora, S. K.; Shvets, I. V.

In: Journal of Physics Condensed Matter, Vol. 20, No. 23, 235218, 11.06.2008.

Research output: Contribution to journal › Article › peer-review

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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.",

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AU - Hild, K.

AU - Maul, J.

AU - Meng, T.

AU - Kallmayer, M.

AU - Schönhense, G.

AU - Elmers, H. J.

AU - Ramos Amigo, Rafael Enrique

AU - Arora, S. K.

AU - Shvets, I. V.

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AB - 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.

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