Abstract
We have fabricated all semiconductor resonant tunneling diodes based on the material system, containing dilute magnetic material in the quantum well, and studied their current-voltage characteristics. When subjected to an external magnetic field the resulting spin splitting of the levels in the quantum well leads to a splitting of the transmission resonance into two separate peaks. This is interpreted as evidence of tunneling transport through spin polarized levels, and could be the first step towards a voltage controlled spin filter.
- Received 7 March 2003
DOI:https://doi.org/10.1103/PhysRevLett.90.246601
©2003 American Physical Society