Journal Article

PreJuSER-58221

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Interpreting magnetization from Faraday rotation in birefringent, magnetic media

Woodford, S. R.FZJ* ; Bringer, A.FZJ* ; Blügel, S.FZJ*

2007
American Institute of Physics Melville, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/2888  doi:10.1063/1.2437586

Abstract: The Faraday effect is an extremely useful probe of magnetization dynamics on an ultrafast scale. However, the measured Faraday rotation is difficult to interpret in birefringent media. We investigate the link between magnetization and Faraday rotation by solving Maxwell's equations in a magnetically ordered, birefringent material. We find that the Faraday rotation can depend nonlinearly on the magnetization, meaning that symmetric magnetic oscillations may lead to asymmetric Faraday measurements. Furthermore, sample alignment becomes important-if the incident light is not polarized along a birefringence axis of the sample, the Faraday rotation may be strongly enhanced or weakened, and the interpretation of the magnetization amplitude may be wrong by an order of magnitude. (c) 2007 American Institute of Physics.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IFF-1)
2. Center of Nanoelectronic Systems for Information Technology (CNI)
3. Jülich-Aachen Research Alliance - Fundamentals of Future Information Technology (JARA-FIT)
4. Jülich-Aachen Research Alliance - Simulation Sciences (JARA-SIM)

Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2007
Notes: Copyright AIP. This version is available at http://jap.aip.org/

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