Size-dependent exciton g factor in self-assembled InAs/InP quantum dots

N. A. J. M. Kleemans; J. van Bree; M. Bozkurt; P. J. van Veldhoven; P. A. Nouwens; R. Notzel; A. Yu Silov; P. M. Koenraad; M. E. Flatte

doi:10.1103/PhysRevB.79.045311

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Size-dependent exciton g factor in self-assembled InAs/InP quantum dots

Journal article

Peer reviewed

Size-dependent exciton g factor in self-assembled InAs/InP quantum dots

N. A. J. M. Kleemans, J. van Bree, M. Bozkurt, P. J. van Veldhoven, P. A. Nouwens, R. Notzel, A. Yu Silov, P. M. Koenraad and M. E. Flatte

Physical review. B, Condensed matter and materials physics, Vol.79(4), 045311

01/01/2009

DOI: 10.1103/PhysRevB.79.045311

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Abstract

We have studied the size dependence of the exciton g factor in self-assembled InAs/InP quantum dots. Photoluminescence measurements on a large ensemble of these dots indicate a multimodal height distribution. Cross-sectional scanning tunneling microscopy measurements have been performed and support the interpretation of the macrophotoluminescence spectra. More than 160 individual quantum dots have systematically been investigated by analyzing single dot magnetoluminescence between 1200 and 1600 nm. We demonstrate a strong dependence of the exciton g factor on the height and diameter of the quantum dots, which eventually gives rise to a sign change of the g factor. The observed correlation between exciton g factor and the size of the dots is in good agreement with calculations. Moreover, we find a size-dependent anisotropy splitting of the exciton emission in zero magnetic field.

Materials Science

Physical Sciences

Physics

Technology

Materials Science, Multidisciplinary

Physics, Applied

Physics, Condensed Matter

Science & Technology

Details

Title: Subtitle: Size-dependent exciton g factor in self-assembled InAs/InP quantum dots
Creators: N. A. J. M. Kleemans - Eindhoven University of Technology
J. van Bree - Eindhoven University of Technology
M. Bozkurt - Eindhoven University of Technology
P. J. van Veldhoven - Eindhoven University of Technology
P. A. Nouwens - Eindhoven University of Technology
R. Notzel - Eindhoven University of Technology
A. Yu Silov - Eindhoven University of Technology
P. M. Koenraad - Eindhoven University of Technology
M. E. Flatte - University of Iowa
Resource Type: Journal article
Publication Details: Physical review. B, Condensed matter and materials physics, Vol.79(4), 045311
DOI: 10.1103/PhysRevB.79.045311
NLM abbreviation: Phys Rev B Condens Matter Mater Phys
ISSN: 1098-0121
eISSN: 1550-235X
Publisher: American Physical Society
Number of pages: 7
Grant note: NWO (The Netherlands); Netherlands Organization for Scientific Research (NWO); Netherlands Government ONR MURI; MURI; Office of Naval Research
Language: English
Date published: 01/01/2009
Academic Unit: Electrical and Computer Engineering; Physics and Astronomy
Record Identifier: 9984429025802771

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