Photoluminescence measurements of InP quantum dots in pulsed magnetic fields
| Autor: | Victor Moshchalkov, M. K. Zundel, Karl Eberl, Manus Hayne, R Provoost |
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| Rok vydání: | 1998 |
| Předmět: |
Physics
Photoluminescence Condensed matter physics Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Line width Electronic Optical and Magnetic Materials Magnetic field Quantum dot laser Quantum dot Homogeneity (physics) Perpendicular Diamagnetism Electrical and Electronic Engineering |
| Zdroj: | Physica B: Condensed Matter. :203-206 |
| ISSN: | 0921-4526 |
| DOI: | 10.1016/s0921-4526(98)00516-x |
| Popis: | We report the first photoluminescence (PL) measurements on stacked layers of self-assembled InP quantum dots in pulsed magnetic fields up to 50 T at 4.2 K. A strong increase of the diamagnetic shift with magnetic field parallel and perpendicular to the growth direction is observed by decreasing the stacked layer separation from 8 to 4 nm, indicating that in latter case the quantum dot layers are strongly coupled. This is confirmed by the decrease in PL line width, which is determined by the height homogeneity of a single dot or by the fluctuation of the total height of the coupled layers. |
| Databáze: | OpenAIRE |
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