Abstract
A femtosecond-resolved low-temperature near-field scanning optical microscope is used to monitor the spatio-temporal evolution of excitonic spins in magnetic semiconductor quantum structures that are laterally patterned with a focused beam of Ga+ ions. Polarization-resolved photoluminescence (PL) images reveal a spin-dependent energy landscape in which the Zeeman splitting is diminished in implanted regions, and carrier and spin behavior is directly distinguished by sharp differences in intensity and polarization profits. Time-resolved measurements suggest that exciton diffusion acquires a spin-dependent component in the presence of a magnetic field. The data demonstrate fundamental limitations on the measurement of polarized PL from semiconductors in the near-field regime.
| Original language | English (US) |
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| Pages | 25-26 |
| Number of pages | 2 |
| State | Published - Jan 1 1996 |
| Event | Proceedings of the 1996 6th Quantum Electronics and Laser Science Conference, QELS - Anaheim, CA, USA Duration: Jun 2 1996 → Jun 7 1996 |
Other
| Other | Proceedings of the 1996 6th Quantum Electronics and Laser Science Conference, QELS |
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| City | Anaheim, CA, USA |
| Period | 6/2/96 → 6/7/96 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy