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Hysteretic magnetoresistance and thermal bistability in a magnetic two-dimensional hole system

Wurstbauer, Ursula ; Sliwa, Cezary ; Weiss, Dieter ; Dietl, Tomasz ; Wegscheider, Werner


Colossal negative magnetoresistance and the associated field-inducedinsulator-to-metal transition—the most characteristic features of magnetic semiconductors—are observed in n-type rare-earth oxides1 and chalcogenides2, p-type manganites3 and n-type4, 5 and p-type diluted magnetic semiconductors4, 6, as well as in quantum wells of n-type diluted magnetic semiconductors7, 8, 9. Here, we report on ...


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