Resonant tunneling diode with spin polarized injector

Details Resonant tunneling diode with spin polarized injector Resonant tunneling diode with spin polarized injector

2007-03-22

arxiv.org/abs/cond-mat/0703574v1

Appl. Phys. Lett. 90, 122109 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages, 4 figures

Scientific paper

We investigate the current-voltage characteristics of a II-VI semiconductor resonant-tunneling diode coupled to a diluted magnetic semiconductor injector. As a result of an external magnetic field, a giant Zeeman splitting develops in the injector, which modifies the band structure of the device, strongly affecting the transport properties. We find a large increase in peak amplitude accompanied by a shift of the resonance to higher voltages with increasing fields. We discuss a model which shows that the effect arises from a combination of three-dimensional incident distribution, giant Zeeman spin splitting and broad resonance linewidth.

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