Abstract:
:Vortices play a crucial role in determining the properties of superconductors as well as their applications. Therefore, characterization and manipulation of vortices, especially at the single-vortex level, is of great importance. Among many techniques to study single vortices, scanning tunnelling microscopy (STM) stands out as a powerful tool, due to its ability to detect the local electronic states and high spatial resolution. However, local control of superconductivity as well as the manipulation of individual vortices with the STM tip is still lacking. Here we report a new function of the STM, namely to control the local pinning in a superconductor through the heating effect. Such effect allows us to quench the superconducting state at nanoscale, and leads to the growth of vortex clusters whose size can be controlled by the bias voltage. We also demonstrate the use of an STM tip to assemble single-quantum vortices into desired nanoscale configurations.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Ge JY,Gladilin VN,Tempere J,Xue C,Devreese JT,Van de Vondel J,Zhou Y,Moshchalkov VVdoi
10.1038/ncomms13880subject
Has Abstractpub_date
2016-12-09 00:00:00pages
13880issn
2041-1723pii
ncomms13880journal_volume
7pub_type
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