W Weber et al 1999 New J. Phys. 1 9 doi:10.1088/1367-2630/1/1/309
The electron analogue to the Faraday rotation
W Weber, D Oberli, S Riesen and H C Siegmann
Show affiliationsWe show experimentally that the Faraday rotation which is the rotation of the light polarization during transmission of linearly polarized light through a ferromagnet, has its analogue in experiments with spin-polarized electrons: the spin-polarization vector precesses around the direction of the magnetization. For low-energy electrons the precession angle per unit length is two orders of magnitude larger compared to the one observed with light. It is a direct measure of the elusive exchange energy as it depends on the energy of the electrons. We believe that applying this phenomenon will offer new prospects of studying magnetism.
- PACS
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78.20.Ls Magnetooptical effects
75.60.Ej Magnetization curves, hysteresis, Barkhausen and related effects
- Subjects
- Dates
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Issue 1 (May 1999)
Received 3 March 1999
Published 24 May 1999
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The electron analogue to the Faraday rotation
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