Tunnelling of spin-polarized holes in asymmetric double quantum well structures
Abstract
We report on time-resolved photoluminescence studies of tunnelling in a system of asymmetric double quantum wells (QWs). We employ a structure with a semimagnetic QW to align carrier spins and with excess concentration of electrons to provide a sensitive tool for studying the heavy hole dynamics. We prove the existence of hole tunnelling and demonstrate an efficient spin transfer in the process. A semi-empirical model describes qualitatively the experimental findings.
- Publication:
-
Semiconductor Science Technology
- Pub Date:
- April 2004
- DOI:
- 10.1088/0268-1242/19/4/125
- Bibcode:
- 2004SeScT..19S.380K