Kavli Affiliate: Grace Xing
| First 5 Authors: Jimy Encomendero, Vladimir Protasenko, Debdeep Jena, Huili Grace Xing,
| Summary:
Resonant tunneling transport in polar heterostructures is intimately
connected to the polarization fields emerging from the geometric Berry-phase.
In these structures, quantum confinement results not only in a discrete
electronic spectrum, but also in built-in polarization charges exhibiting a
broken inversion symmetry along the transport direction. Thus, electrons
undergo highly asymmetric quantum interference effects with respect to the
direction of current flow. By employing doping to counter the broken symmetry,
we deterministically control the resonant transmission through GaN/AlN resonant
tunneling diodes and experimentally demonstrate the recovery of symmetric
resonant tunneling injection across the noncentrosymmetric double-barrier
potential.
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