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  • Nanoscale stoichiometric modifications and surface charge patterning of La[sub]{1.975}Sr[sub]{0.025}CuO[sub]{4+[delta]} crystals with a biased atomic force microscope tip [Elektronski vir]
    Strojnik, Martin ...
    The application of a positive or negative local bias to the surface of La[sub]{1.975}Sr[sub]{0.025}CuO[sub]{4+[delta]} (LSCO) crystal by a conducting atomic force microscope tip results in ... accumulation of a (positive or negative respectively) metastable charge on the surface. The surface charge initially shows diffusive dynamics with a timescale of hours, but thereafter it is shown to be stable for months. The charged regions are found by Auger electron spectroscopy to have a different stoichiometry from the surrounding material. A part from fundamental implications for the heterostructure device construction, such surface charge manipulation could lead to AFM nanopatterning of superconducting nanoscale device and applications memories.
    Source: Journal of physics. D, Applied physics. - ISSN 0022-3727 (Vol. 45, no. 12, 2012, str. 125302-1-125302-5)
    Type of material - e-article
    Publish date - 2012
    Language - english
    COBISS.SI-ID - 899242

    Link(s):

    http://dx.doi.org/10.1088/0022-3727/45/12/125302

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