Mechanical nanomanipulation of single strain-induced semiconductor quantum dots

C. Obermuller, A. Deisenrieder, G. Abstreiter, K. Karrai, S. Grosse, S. Manus, J. Feldman, Harri Lipsanen, Markku Sopanen, Jouni Ahopelto

    Research output: Contribution to journalArticleScientificpeer-review

    16 Citations (Scopus)


    We report on low temperatures (4 K) in situ nanomanipulation of the confining potential of single strain-induced Ga0.9In0.1As quantum dots. This was achieved by scanning a metal coated tapered optical fiber tip over the self organized InP stressor islands that are responsible for the localized strain field in the GaInAs/GaAs quantum well. By scanning the tip with a shear force contact of the order of 1 nN, we thinned down the InP stressor islands in an unexpectedly reproducible and controlled way. The modification of the confining potential was directly monitored by measuring in situ the photoluminescence of each manipulated dot using a near-field scanning optical microscope.
    Original languageEnglish
    Pages (from-to)358-360
    Number of pages3
    JournalApplied Physics Letters
    Issue number3
    Publication statusPublished - 1999
    MoE publication typeA1 Journal article-refereed


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