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1.
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New Optical Route to Magnetic State Control

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Noriaki Kida, Physics 5, 41 (2012) – Published April 9, 2012
Optically switched magnetic domains are easier to control if the light source is circularly polarized.
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Spin-Sensitive Optics

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Jean-Yves Bigot, Physics 5, 11 (2012) – Published January 23, 2012
Advances in a magneto-optical technique will allow researchers to better understand how to control spins in a metal with short optical pulses.
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For faster magnetic switching—destroy and rebuild

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Riccardo Hertel, Physics 2, 73 (2009) – Published September 8, 2009
Magnetic switching is typically a continuous process, where a field pulse rotates a magnet from up to down, but it is now possible to do this faster — and with all-optical methods — by first quenching the magnetization to zero and then repolarizing it in the opposite direction.