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Title: Magnetic gates and guides for superconducting vortices

Here, we image the motion of superconducting vortices in niobium film covered with a regular array of thin permalloy stripes. By altering the magnetization orientation in the stripes using a small in-plane magnetic field, we can tune the strength of interactions between vortices and the stripe edges, enabling acceleration or retardation of the superconducting vortices in the sample and consequently introducing strong tunable anisotropy into the vortex dynamics. We discuss our observations in terms of the attraction/repulsion between point magnetic charges carried by vortices and lines of magnetic charges at the stripe edges, and derive analytical formulas for the vortex-magnetic stripes coupling. Our approach demonstrates the analogy between the vortex motion regulated by the magnetic stripe array and electric carrier flow in gated semiconducting devices. Scaling down the geometrical features of the proposed design may enable controlled manipulation of single vortices, paving the way for Abrikosov vortex microcircuits and memories.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [4] ;  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States); Univ. Federal de Sao Carlos, Sao Paulo (Brazil)
  3. Univ. Bordeaux, Talence Cedex (France)
  4. Argonne National Lab. (ANL), Argonne, IL (United States); Queens College, Queens, NY (United States)
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 95; Journal Issue: 14; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Materials Sciences and Engineering Division; Sao Paulo Research Foundation (FAPESP)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1352922
Alternate Identifier(s):
OSTI ID: 1349767

Vlasko-Vlasov, V. K., Colauto, F., Buzdin, A. I., Rosenmann, D., Benseman, T., and Kwok, W. -K.. Magnetic gates and guides for superconducting vortices. United States: N. p., Web. doi:10.1103/PhysRevB.95.144504.
Vlasko-Vlasov, V. K., Colauto, F., Buzdin, A. I., Rosenmann, D., Benseman, T., & Kwok, W. -K.. Magnetic gates and guides for superconducting vortices. United States. doi:10.1103/PhysRevB.95.144504.
Vlasko-Vlasov, V. K., Colauto, F., Buzdin, A. I., Rosenmann, D., Benseman, T., and Kwok, W. -K.. 2017. "Magnetic gates and guides for superconducting vortices". United States. doi:10.1103/PhysRevB.95.144504. https://www.osti.gov/servlets/purl/1352922.
@article{osti_1352922,
title = {Magnetic gates and guides for superconducting vortices},
author = {Vlasko-Vlasov, V. K. and Colauto, F. and Buzdin, A. I. and Rosenmann, D. and Benseman, T. and Kwok, W. -K.},
abstractNote = {Here, we image the motion of superconducting vortices in niobium film covered with a regular array of thin permalloy stripes. By altering the magnetization orientation in the stripes using a small in-plane magnetic field, we can tune the strength of interactions between vortices and the stripe edges, enabling acceleration or retardation of the superconducting vortices in the sample and consequently introducing strong tunable anisotropy into the vortex dynamics. We discuss our observations in terms of the attraction/repulsion between point magnetic charges carried by vortices and lines of magnetic charges at the stripe edges, and derive analytical formulas for the vortex-magnetic stripes coupling. Our approach demonstrates the analogy between the vortex motion regulated by the magnetic stripe array and electric carrier flow in gated semiconducting devices. Scaling down the geometrical features of the proposed design may enable controlled manipulation of single vortices, paving the way for Abrikosov vortex microcircuits and memories.},
doi = {10.1103/PhysRevB.95.144504},
journal = {Physical Review B},
number = 14,
volume = 95,
place = {United States},
year = {2017},
month = {4}
}