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Title: Guiding thermomagnetic avalanches with soft magnetic stripes

Abstract

Here, we demonstrate the potential for manipulating the ultrafast dynamics of thermomagnetic flux avalanches (TMA) in superconducting films with soft magnetic stripes deposited on the film. By tuning the in-plane magnetization of the stripes, we induce lines of strong magnetic potentials for Abrikosov vortices, resulting in guided slow motion of vortices along the stripe edges and preferential bursts of TMA along the stripes. Furthermore, we show that transversely polarized stripes can reduce the TMA size by diverting magnetic flux away from the major trunk of the TMA into interstripe gaps. Our data indicate that TMAs are launched from locations with enhanced vortex entry barrier, where flux accumulation followed by accelerated vortex discharge significantly reduces the threshold of the applied field ramping speed required for the creation of TMAs. Finally, vortex-antivortex annihilation at the moving front of an expanding TMA can account for the enhanced TMA activity in the receding branches of the sample's magnetization cycle and the preferred propagation of TMAs into maximum trapped flux regions.

Authors:
 [1];  [2];  [3];  [1];  [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. Argonne National Lab. (ANL), Argonne, IL (United States); Queens College, Queens, NY (United States)
Publication Date:
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 & Engineering Division; USDOE
OSTI Identifier:
1417026
Alternate Identifier(s):
OSTI ID: 1414619
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 96; Journal Issue: 21; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Vlasko-Vlasov, V. K., Colauto, F., Benseman, T., Rosenmann, D., and Kwok, W. -K. Guiding thermomagnetic avalanches with soft magnetic stripes. United States: N. p., 2017. Web. doi:10.1103/PhysRevB.96.214510.
Vlasko-Vlasov, V. K., Colauto, F., Benseman, T., Rosenmann, D., & Kwok, W. -K. Guiding thermomagnetic avalanches with soft magnetic stripes. United States. doi:10.1103/PhysRevB.96.214510.
Vlasko-Vlasov, V. K., Colauto, F., Benseman, T., Rosenmann, D., and Kwok, W. -K. Fri . "Guiding thermomagnetic avalanches with soft magnetic stripes". United States. doi:10.1103/PhysRevB.96.214510.
@article{osti_1417026,
title = {Guiding thermomagnetic avalanches with soft magnetic stripes},
author = {Vlasko-Vlasov, V. K. and Colauto, F. and Benseman, T. and Rosenmann, D. and Kwok, W. -K.},
abstractNote = {Here, we demonstrate the potential for manipulating the ultrafast dynamics of thermomagnetic flux avalanches (TMA) in superconducting films with soft magnetic stripes deposited on the film. By tuning the in-plane magnetization of the stripes, we induce lines of strong magnetic potentials for Abrikosov vortices, resulting in guided slow motion of vortices along the stripe edges and preferential bursts of TMA along the stripes. Furthermore, we show that transversely polarized stripes can reduce the TMA size by diverting magnetic flux away from the major trunk of the TMA into interstripe gaps. Our data indicate that TMAs are launched from locations with enhanced vortex entry barrier, where flux accumulation followed by accelerated vortex discharge significantly reduces the threshold of the applied field ramping speed required for the creation of TMAs. Finally, vortex-antivortex annihilation at the moving front of an expanding TMA can account for the enhanced TMA activity in the receding branches of the sample's magnetization cycle and the preferred propagation of TMAs into maximum trapped flux regions.},
doi = {10.1103/PhysRevB.96.214510},
journal = {Physical Review B},
number = 21,
volume = 96,
place = {United States},
year = {Fri Dec 22 00:00:00 EST 2017},
month = {Fri Dec 22 00:00:00 EST 2017}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on December 22, 2018
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