Flux Penetration in a Ferromagnetic/Superconducting Bilayer

• Authors: Z. Adamus , M. Cieplak , A. Abal'oshev , M. Kończykowski , X. Cheng , L. Zhu , C. Chien
• Languages of publication: EN

Abstracts

EN

An array of miniature Hall sensors is used to study the magnetic flux penetration in a ferromagnetic/superconducting bilayer consisting of Nb as a superconducting layer and Co/Pt multilayer with perpendicular magnetic anisotropy as a ferromagnetic layer, separated by an amorphous Si layer to avoid the proximity effect. It is found that the magnetic domains in the ferromagnetic layer create a large edge barrier in the superconducting layer which delays flux penetration. The smooth flux profiles observed in the absence of magnetic pinning change into terraced profiles in the presence of domains.

Keywords

EN

74.25.Ha; 74.25.Qt; 74.78.Db; 74.78.Fk

Discipline

• 74.25.Ha: Magnetic properties including vortex structures and related phenomena(for vortices, magnetic bubbles, and magnetic domain structure, see 75.70.Kw)
• 74.78.Fk: Multilayers, superlattices, heterostructures

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2007
• Volume: 111
• Issue: 1
• Pages: 95-98

Dates

published

2007-01

received

2006-09-04

Contributors

author

Z. Adamus

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

M. Cieplak

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

A. Abal'oshev

• Institute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

author

M. Kończykowski

• Laboratoire des Solides Irradies, CEA/DSM/DRECAM and CNRS-UMR 7642, École Polytechnique, 91128 Palaiseau Cedex, France

author

X. Cheng

• Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Md 21218, USA

author

L. Zhu

• Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Md 21218, USA

author

C. Chien

• Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Md 21218, USA

References

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• 2. C. Reichhardt, J. Groth, C.J. Olson, S.B. Field, F. Nori, Phys. Rev. B, 54, 16108, 1997
• 3. U. Welp, Z.L. Xiao, V. Novosad, V.K. Vlasko-Vlasov, Phys. Rev. B, 71, 014505, 2005
• 4. M.Z. Cieplak, Z. Adamus, A. Abal'oshev, I. Abal'osheva, M. Berkowski, X.M. Cheng, H. Sang, C.L. Chien, Phys. Status Solidi C, 2, 1650, 2005
• 5. Z. Adamus, M. Z. Cieplak, A. Abal'oshev, M. Berkowski, M. Kończykowski, X.M. Cheng, L.Y. Zhu, C.L. Chien, Acta Phys. Pol. A, 109, 451, 2006

Identifiers

DOI

10.12693/APhysPolA.111.95