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Ferromagnetic Semiconductors
In article number 2301347, Le Duc Anh, Iwao Matsuda, Masaaki Tanaka, and co‐workers demonstrate the first sub‐picosecond (≈600 fs) magnetization process in a ferromagnetic quantum well, which utilizes the high carrier coherency and a rapid photo‐Demba field effect, using pump‐and‐probe measurements with an X‐ray free‐electron laser. This could open a new way to ultrafast...
Strong spin‐charge interactions in several ferromagnets are expected to lead to subpicosecond (sub‐ps) magnetization of the magnetic materials through control of the carrier characteristics via electrical means, which is essential for ultrafast spin‐based electronic devices. Thus far, ultrafast control of magnetization has been realized by optically pumping a large number of carriers into the d or...
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