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Title: Visualizing domain wall and reverse domain superconductivity

Abstract

In magnetically coupled, planar ferromagnet-superconductor (F/ S) hybrid structures, magnetic domain walls can be used to spatially confine the superconductivity. In contrast to a superconductor in a uniform applied magnetic field, the nucleation of the superconducting order parameter in F/ S structures is governed by the inhomogeneous magnetic field distribution. The interplay between the superconductivity localized at the domain walls and far from the walls leads to effects such as re-entrant superconductivity and reverse domain superconductivity with the critical temperature depending upon the location. Here we use scanning tunneling spectroscopy to directly image the nucleation of superconductivity at the domain wall in F/ S structures realized with Co-Pd multilayers and Pb thin films. Our results demonstrate that such F/ S structures are attractive model systems that offer the possibility to control the strength and the location of the superconducting nucleus by applying an external magnetic field, potentially useful to guide vortices for computing application.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science - Office of Basic Energy Sciences - Materials Sciences and Engineering Division
OSTI Identifier:
1356626
DOE Contract Number:
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nature Communications; Journal Volume: 5
Country of Publication:
United States
Language:
English

Citation Formats

Iavarone, M., Moore, S. A., Fedor, J., Ciocys, S. T., Karapetrov, G., Pearson, J., Novosad, V., and Bader, S. D.. Visualizing domain wall and reverse domain superconductivity. United States: N. p., 2014. Web. doi:10.1038/ncomms5766.
Iavarone, M., Moore, S. A., Fedor, J., Ciocys, S. T., Karapetrov, G., Pearson, J., Novosad, V., & Bader, S. D.. Visualizing domain wall and reverse domain superconductivity. United States. doi:10.1038/ncomms5766.
Iavarone, M., Moore, S. A., Fedor, J., Ciocys, S. T., Karapetrov, G., Pearson, J., Novosad, V., and Bader, S. D.. Thu . "Visualizing domain wall and reverse domain superconductivity". United States. doi:10.1038/ncomms5766.
@article{osti_1356626,
title = {Visualizing domain wall and reverse domain superconductivity},
author = {Iavarone, M. and Moore, S. A. and Fedor, J. and Ciocys, S. T. and Karapetrov, G. and Pearson, J. and Novosad, V. and Bader, S. D.},
abstractNote = {In magnetically coupled, planar ferromagnet-superconductor (F/ S) hybrid structures, magnetic domain walls can be used to spatially confine the superconductivity. In contrast to a superconductor in a uniform applied magnetic field, the nucleation of the superconducting order parameter in F/ S structures is governed by the inhomogeneous magnetic field distribution. The interplay between the superconductivity localized at the domain walls and far from the walls leads to effects such as re-entrant superconductivity and reverse domain superconductivity with the critical temperature depending upon the location. Here we use scanning tunneling spectroscopy to directly image the nucleation of superconductivity at the domain wall in F/ S structures realized with Co-Pd multilayers and Pb thin films. Our results demonstrate that such F/ S structures are attractive model systems that offer the possibility to control the strength and the location of the superconducting nucleus by applying an external magnetic field, potentially useful to guide vortices for computing application.},
doi = {10.1038/ncomms5766},
journal = {Nature Communications},
number = ,
volume = 5,
place = {United States},
year = {Thu Aug 28 00:00:00 EDT 2014},
month = {Thu Aug 28 00:00:00 EDT 2014}
}