Magnetic CdSe-based quantum dots grown on Mn-passivated ZnSe

L. V. Titova; J. K. Furdyna; M. Dobrowolska; S. Lee; T. Topuria; P. Moeck; N. D. Browning

doi:10.1063/1.1450254

Magnetic CdSe-based quantum dots grown on Mn-passivated ZnSe

L. V. Titova, J. K. Furdyna, M. Dobrowolska, S. Lee, T. Topuria, P. Moeck, N. D. Browning

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

In this letter we describe the properties of self-assembled CdSe quantum dots (QDs) grown on Mn-passivated ZnSe buffers. We show that the Mn deposited on the ZnSe surface during the passivation process acts as a nucleating seed for self-assembled QD formation. For moderate amounts of Mn deposition, the dots grown in this way show a significant improvement in size uniformity compared to CdSe dots grown on ZnSe without Mn passivation. Using photoluminescence, we also show that the dots exhibit large Zeeman splitting, indicating that this growth method is suitable for fabricating magnetic QDs that exhibit strong spin polarization effects.

Original language	English
Pages (from-to)	1237-1239
Number of pages	3
Journal	Applied Physics Letters
Volume	80
Issue number	7
DOIs	https://doi.org/10.1063/1.1450254
Publication status	Published - 2002 Feb 18

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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abstract = "In this letter we describe the properties of self-assembled CdSe quantum dots (QDs) grown on Mn-passivated ZnSe buffers. We show that the Mn deposited on the ZnSe surface during the passivation process acts as a nucleating seed for self-assembled QD formation. For moderate amounts of Mn deposition, the dots grown in this way show a significant improvement in size uniformity compared to CdSe dots grown on ZnSe without Mn passivation. Using photoluminescence, we also show that the dots exhibit large Zeeman splitting, indicating that this growth method is suitable for fabricating magnetic QDs that exhibit strong spin polarization effects.",

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AU - Titova, L. V.

AU - Furdyna, J. K.

AU - Dobrowolska, M.

AU - Lee, S.

AU - Topuria, T.

AU - Moeck, P.

AU - Browning, N. D.

PY - 2002/2/18

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N2 - In this letter we describe the properties of self-assembled CdSe quantum dots (QDs) grown on Mn-passivated ZnSe buffers. We show that the Mn deposited on the ZnSe surface during the passivation process acts as a nucleating seed for self-assembled QD formation. For moderate amounts of Mn deposition, the dots grown in this way show a significant improvement in size uniformity compared to CdSe dots grown on ZnSe without Mn passivation. Using photoluminescence, we also show that the dots exhibit large Zeeman splitting, indicating that this growth method is suitable for fabricating magnetic QDs that exhibit strong spin polarization effects.

AB - In this letter we describe the properties of self-assembled CdSe quantum dots (QDs) grown on Mn-passivated ZnSe buffers. We show that the Mn deposited on the ZnSe surface during the passivation process acts as a nucleating seed for self-assembled QD formation. For moderate amounts of Mn deposition, the dots grown in this way show a significant improvement in size uniformity compared to CdSe dots grown on ZnSe without Mn passivation. Using photoluminescence, we also show that the dots exhibit large Zeeman splitting, indicating that this growth method is suitable for fabricating magnetic QDs that exhibit strong spin polarization effects.

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Magnetic CdSe-based quantum dots grown on Mn-passivated ZnSe

Abstract

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