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arXiv · 0709.3847

External Control of a Metal-Insulator Transition in GaMnAs Wires

Anh Kiet Nguyen·Arne Brataas
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Abstract

Quantum transport in disordered ferromagnetic (III,Mn)V semiconductors is studied theoretically. Mesoscopic wires exhibit an Anderson disorder-induced metal-insulator transition that can be controlled by a weak external magnetic field. This metal-insulator transition should also occur in other materials with large anisotropic magneto resistance effects. The transition can be useful for studies of zero-temperature quantum critical phase transitions and fundamental material properties.

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Anh Kiet Nguyen, Arne Brataas. 2008-08-06. External Control of a Metal-Insulator Transition in GaMnAs Wires. https://doi.org/10.1103/physrevlett.101.016801

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