Spin-dependent electron transport through a magnetic resonant tunneling diode

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 ...

Spin-polarized transport in II–VI magnetic resonant tunneling devices

We investigate electronic transport through II–VI semiconductor resonant tunneling structures containing diluted magnetic impurities. Due to the exchange interaction between the conduction electrons and the impurities, there arises a giant Zeeman splitting in the presence of a moderately low magnetic field. As a consequence, when the quantum well is magnetically doped the current–voltage charac...

Electron transport through cubic InGaN/AlGaN resonant tunneling diodes

We theoretically study the electron transport through a resonant tunneling diode (RTD) based on strained AlxGa1−xN/In0.1Ga0.9N/AlxGa1−xN quantumwells embedded in relaxed n-Al0.15Ga0.85N/strained In0.1Ga0.9N emitter and collector. The aluminum composition in both injector and collector contacts is taken relatively weak; this does not preclude achieving a wide band offset at the border of the pre...

Resonant tunneling diode pdf

Spin-dependent resonant tunneling through quantum-well states in magnetic metallic thin films.

Quantum-well (QW) states in nonmagnetic metal films between magnetic layers are known to be important in spin-dependent transport, but QW states in magnetic films remains elusive. Here we identify the conditions for resonant tunneling through QW states in magnetic films and report first principles calculations of Fe/MgO/FeO/Fe/Cr and Co/MgO/Fe/Cr. We show that, at resonance, the current increas...