Manipulation of Ferromagnets via the Spin-Selective Optical Stark Effect

Abstract

We investigate the non-resonant all-optical switching of magnetization. We treat the inverse Faraday effect (IFE) theoretically in terms of the spin-selective optical Stark effect for linearly or circularly polarized light. In the dilute magnetic semiconductors (Ga,Mn)As, strong laser pulses below the band gap induce effective magnetic fields of several teslas in a direction which depends on the magnetization and light wave vectors. Our theory demonstrates that the polarized light catalyzes the angular momentum transfer between lattice and the magnetization.

5 pages, 2 figures

References in corpus (8)

• Theory of ferromagnetic (III,Mn)V semiconductors
• Light-induced magnetization reversal of high-anisotropy TbCo alloy films
• Photo-induced precession of magnetization in ferromagnetic (Ga,Mn)As
• Optical Properties of III-Mn-V Ferromagnetic Semiconductors
• Femtosecond Coherent Control of Spin with Light in (Ga,Mn)As ferromagnets
• Direct measurement of the three dimensional magnetization vector trajectory in GaMnAs by a magneto-optical pump-and-probe method
• Biased quasi ballistic spin torque magnetization reversal
• Ultrafast optical control of magnetization in EuO thin films

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• Rectification of Spin Current in Inversion-Asymmetric Magnets with Linearly-Polarized Electromagnetic Waves
• Ultrafast Control of Spin Interactions in Honeycomb Antiferromagnetic Insulators
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• Nonequilibrium magnons from hot electrons in antiferromagnetic systems
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• Ultrafast magnetization enhancement and spin current injection in magnetic multilayers by exciting the nonmagnetic metal
• Recent Progress in Ultrafast Dynamics of Transition-Metal Compounds Studied by Time-Resolved X-ray Techniques