Magnetic proximity effect in Nb/Gd superlattices seen by neutron reflectometry

Yu N. Khaydukov, E. A. Kravtsov, V. D. Zhaketov, V. V. Progliado, G. Kim, Yu V. Nikitenko, T. Keller, V. V. Ustinov, V. Aksenov, B. Keimer

Research output: Contribution to journalArticle

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Abstract

We have used spin-polarized neutron reflectometry to investigate the magnetization profile of superlattices composed of ferromagnetic Gd and superconducting Nb layers. We have observed a partial suppression of ferromagnetic (F) order of Gd layers in [Gd(dF)/Nb(25 nm)]12 superlattices below the superconducting (S) transition of the Nb layers. The amplitude of the suppression decreases with increasing dF. By analyzing the neutron spin asymmetry we conclude that the observed effect has an electromagnetic origin - the proximity-coupled S layers screen out the external magnetic field and thus suppress the F response of the Gd layers inside the structure. Our investigation demonstrates the considerable influence of electromagnetic effects on the magnetic properties of S/F systems.

Original languageEnglish
Article number140503
JournalPhysical Review B
Volume99
Issue number14
DOIs
Publication statusPublished - Apr 12 2019

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Superlattices
superlattices
Neutrons
Magnetoelectric effects
neutrons
Magnetization
Magnetic properties
Magnetic fields
retarding
electromagnetism
proximity
asymmetry
magnetic properties
magnetization
profiles
magnetic fields

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Khaydukov, Y. N., Kravtsov, E. A., Zhaketov, V. D., Progliado, V. V., Kim, G., Nikitenko, Y. V., ... Keimer, B. (2019). Magnetic proximity effect in Nb/Gd superlattices seen by neutron reflectometry. Physical Review B, 99(14), [140503]. https://doi.org/10.1103/PhysRevB.99.140503

Magnetic proximity effect in Nb/Gd superlattices seen by neutron reflectometry. / Khaydukov, Yu N.; Kravtsov, E. A.; Zhaketov, V. D.; Progliado, V. V.; Kim, G.; Nikitenko, Yu V.; Keller, T.; Ustinov, V. V.; Aksenov, V.; Keimer, B.

In: Physical Review B, Vol. 99, No. 14, 140503, 12.04.2019.

Research output: Contribution to journalArticle

Khaydukov, YN, Kravtsov, EA, Zhaketov, VD, Progliado, VV, Kim, G, Nikitenko, YV, Keller, T, Ustinov, VV, Aksenov, V & Keimer, B 2019, 'Magnetic proximity effect in Nb/Gd superlattices seen by neutron reflectometry', Physical Review B, vol. 99, no. 14, 140503. https://doi.org/10.1103/PhysRevB.99.140503
Khaydukov YN, Kravtsov EA, Zhaketov VD, Progliado VV, Kim G, Nikitenko YV et al. Magnetic proximity effect in Nb/Gd superlattices seen by neutron reflectometry. Physical Review B. 2019 Apr 12;99(14). 140503. https://doi.org/10.1103/PhysRevB.99.140503
Khaydukov, Yu N. ; Kravtsov, E. A. ; Zhaketov, V. D. ; Progliado, V. V. ; Kim, G. ; Nikitenko, Yu V. ; Keller, T. ; Ustinov, V. V. ; Aksenov, V. ; Keimer, B. / Magnetic proximity effect in Nb/Gd superlattices seen by neutron reflectometry. In: Physical Review B. 2019 ; Vol. 99, No. 14.
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