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Applied Physics Letters
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Magnetic field-induced semimetal-to-semiconductor transition in InAs-GaSb superlattices

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Abstract

With the application of a magnetic field, we have observed a semimetal-to-semiconductor transition in InAs-GaSb superlattices with closely overlapped subbands of electrons and holes. The transition is manifested in a sharp increase in the magnetoresistance in the quantum limit, where the ground Landau levels associated with the subbands are crossed at the Fermi level, resulting in carrier depletion.

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Applied Physics Letters

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