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    National Tsing Hua University Institutional Repository > 工學院  > 材料科學工程學系 > 期刊論文 >  Growth and magnetic properties of self-assembled (In, Mn)As quantum dots

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/62285

    Title: Growth and magnetic properties of self-assembled (In, Mn)As quantum dots
    Authors: Y. F. Chen;W. N. Lee;J. H. Huang;T. S. Chin;R. T. Huang;F. R. Chen;J. J. Kai;K. Aravind;I. N. Lin,;H. C. Ku
    教師: 黃金花
    Date: 2005
    Publisher: American Vacuum Society
    Relation: Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures,Issue Date: Jul 2005,Volume: 23 Issue: 4,On page(s): 1376 - 1378
    Keywords: magnetic properties
    Abstract: Self-assembled In0.79Mn0.21As quantum dots were successfully grown on GaAs (001) substrates by low-temperature molecular beam epitaxy. Atomic force microscopy and high-resolution transmission electron microscopy confirm the formation of quantum dots. High-resolution lattice image suggests that In0.79Mn0.21As dots are single phase with zinc-blend structure. The dots exhibit typical ferromagnetic state at 5 K and demonstrate a Curie temperature of ∼290 K which is much higher than those of (In, Mn)As diluted magnetic semiconductor alloys ever reported. The significant increase in Curie temperature can be attributed to the much higher Mn content in the dots, and the possible enhancement of the hybridization strength between the quantum-confined holes in the dots and the itinerant holes in the semiconductor valence band.
    URI: http://www.avs.org/
    Appears in Collections:[材料科學工程學系] 期刊論文

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