The unusual synergy between magnetism and semiconductivity in the ferromagnetic semiconductor GaMnAs makes it an attractive material for 'spintronics'. Reports of a new giant switching effect lend it an even greater allure.
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Das Sarma, S. A giant appears in spintronics. Nature Mater 2, 292–294 (2003). https://doi.org/10.1038/nmat883
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DOI: https://doi.org/10.1038/nmat883
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