Informace o publikaci
Nearly perfect 3D ordering in IV-VI quantum dot superlattices with ABCABC... vertical stacking sequence
| Název česky | Téměř dokonalé 3D uspořádání v IV-VI supermřížkách s kvantovými tečkami s vertikálním uspořádáním ABCABC |
|---|---|
| Autoři | |
| Rok publikování | 2000 |
| Druh | Článek v odborném periodiku |
| Časopis / Zdroj | Physica E |
| Fakulta / Pracoviště MU | |
| Citace | |
| www | http://www.sci.muni.cz/~mikulik/Publications.html#SpringStanglPHMMWBSKS_PhE_2000 |
| Obor | Fyzika pevných látek a magnetismus |
| Klíčová slova | quantum dots; molecular beam epitaxy; superlattices; self organization; PbSe; X-ray diffraction |
| Popis | Self-organization of PbSe islands in epitaxial PbSe/Pb1-xEuxTe superlattices is shown to result in a spontaneous three-dimensional ordering of the PbSe dots in a trigonal lattice with a fee-like ABCABC vertical stacking sequence. From X-ray diffraction reciprocal space maps, the interlayer correlation direction of the PbSe dots is found to be inclined by 40 degrees with respect to the [111] surface normal. Peak profile measurements in the reciprocal space maps yield a coherence length of the ordered regions of 300 +/- 100 nm in the lateral, and of 530 +/- 50 nm in the vertical direction. This corresponds to ordered regions that contain as many as 250 PbSe dots. |
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