Perpendicular and parallel magnetic field transport measurements in gated InAs/GaSb DHETs

We have performed a magnetotransport study in both perpendicular and parallel magnetic fields for gated InAs/GaSb double heterostructures. These measurements provide a further proof for the existence of a minigap at the anti-crossing point between the electron and hole dispersion relations in this s...

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Bibliographic Details
Main Authors: Lakrimi, M, Rehman, J, Symons, D, Nicholas, R, Mason, N, Walker, P
Format: Conference item
Published: 1998
Description
Summary:We have performed a magnetotransport study in both perpendicular and parallel magnetic fields for gated InAs/GaSb double heterostructures. These measurements provide a further proof for the existence of a minigap at the anti-crossing point between the electron and hole dispersion relations in this system. When a parallel magnetic field is increased from 0 to 12 T, the resistivity drops by 60% when the Fermi energy is in the middle of the minigap, but by less ;than 3% when the Fermi energy is positioned outside the minigap. (C) 1998 Elsevier Science B.V. All rights reserved.