Mechanical Control of Individual Superconducting Vortices

Anna Kremen, Shai Wissberg, Noam Haham, Eylon Persky, Yiftach Frenkel, Beena Kalisky

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

Manipulating individual vortices in a deterministic way is challenging; ideally, manipulation should be effective, local, and tunable in strength and location. Here, we show that vortices respond to local mechanical stress applied in the vicinity of the vortex. We utilized this interaction to move individual vortices in thin superconducting films via local mechanical contact without magnetic field or current. We used a scanning superconducting quantum interference device to image vortices and to apply local vertical stress with the tip of our sensor. Vortices were attracted to the contact point, relocated, and were stable at their new location. We show that vortices move only after contact and that more effective manipulation is achieved with stronger force and longer contact time. Mechanical manipulation of vortices provides a local view of the interaction between strain and nanomagnetic objects as well as controllable, effective, and reproducible manipulation technique.

Original languageEnglish
Pages (from-to)1626-1630
Number of pages5
JournalNano Letters
Volume16
Issue number3
DOIs
StatePublished - 9 Mar 2016

Bibliographical note

Funding Information:
We thank A. Sharoni from Bar-Ilan University and N. Katz from the Hebrew University for providing the superconducting films and for helpful discussions. We thank Vladimir Kogan, Alex Gurevich, Eli Zeldov, and Charles Reichhardt for helpful discussions. This research was supported by European Research Council Grant ERC-2014-STG- 639792, Marie Curie Career Integration Grant FP7-PEOPLE-2012-CIG-333799, and Israel Science Foundation Grant ISF-1102/13.

Publisher Copyright:
© 2016 American Chemical Society.

Keywords

  • Superconducting vortices
  • scanning SQUID microscopy
  • single vortex manipulation
  • superconductivity

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