Spin-dependent resonant tunneling through 6μm diameter double barrier resonant tunneling diode

Resonant tunneling diode pdf

Resonant Tunneling in Double Superlattice Barrier Heterostructures

We have invest igated resonant tunnel ing in double barr ier heterostructures in which the tunnel barr iers have been replaced by short period superlattices, and have shown for the first t ime quantum well confinement in a s ingle quantum well bounded by superlattices. These results also demonstrate the first u t i l iza t ion of shor t period b ina ry super la t t ices as effective t unne l ba...

High magnetic field tunneling transport in a double quantum well-triple barrier resonant tunneling diode

We have measured the magnetotransport of double GaAs quantum well-triple AlAs barrier resonant tunneling heterostructures in pulsed magnetic fields up to 48 T, and temperatures down to 0.3 K. The tunneling structure is designed for a near-simultaneous (triple) resonance, under bias, of the quantum well energy levels and the lowest quasi-2D emitter state. The fan chart of the I(V) resonances is ...

Bidirectional resonant tunneling spin pump

Resonant tunneling-based spin ratchets

We outline a generic ratchet mechanism for creating directed spin-polarized currents in ac-driven double well or double dot structures by employing resonant spin transfer through the system engineered by local external magnetic fields. We show its applicability to semiconductor nanostructures by considering coherent transport through two coupled lateral quantum dots, where the energy levels of ...