Double proximity effect in hybrid planar superconductor-normal metal/ferromagnet-superconductor structures

T.E. Golikova; F. Huebler; D. Beckmann; I.E. Batov; T. Karminskaya; T. Karminskaya; M..Y. Kupriyanov; Alexandre Avraamovitch Golubov; V.V. Ryazanov

doi:10.1103/PhysRevB.86.064416

Double proximity effect in hybrid planar superconductor-normal metal/ferromagnet-superconductor structures

T.E. Golikova, F. Huebler, D. Beckmann, I.E. Batov, T. Karminskaya, T. Karminskaya, M..Y. Kupriyanov, Alexandre Avraamovitch Golubov, V.V. Ryazanov

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Abstract

We have investigated the differential resistance of hybrid planar Al-(Cu/Fe)-Al submicron bridges at low temperatures and in weak magnetic fields. The structure consists of a Cu/Fe bilayer forming a bridge between two superconducting Al electrodes. In the superconducting state of Al electrodes, we have observed a double-peak peculiarity in differential resistance of the S-(N/F)-S structures at a bias voltage corresponding to the minigap. We claim that this effect (the splitting of the minigap) is due to an electron spin polarization in the normal metal which is induced by the ferromagnet. We have demonstrated that the double-peak peculiarity is converted to a single peak at a coercive applied field corresponding to zero magnetization of the Fe layer

Original language	Undefined
Article number	064416
Pages (from-to)	064416-1-064416-5
Number of pages	5
Journal	Physical Review B (Condensed Matter and Materials Physics)
Volume	86
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.86.064416
Publication status	Published - 2012

Keywords

METIS-289333
IR-82263

Access to Document

10.1103/PhysRevB.86.064416

Cite this

Golikova, T. E., Huebler, F., Beckmann, D., Batov, I. E., Karminskaya, T., Karminskaya, T., Kupriyanov, M. Y., Golubov, A. A., & Ryazanov, V. V. (2012). Double proximity effect in hybrid planar superconductor-normal metal/ferromagnet-superconductor structures. Physical Review B (Condensed Matter and Materials Physics), 86(6), 064416-1-064416-5. Article 064416. https://doi.org/10.1103/PhysRevB.86.064416

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title = "Double proximity effect in hybrid planar superconductor-normal metal/ferromagnet-superconductor structures",

abstract = "We have investigated the differential resistance of hybrid planar Al-(Cu/Fe)-Al submicron bridges at low temperatures and in weak magnetic fields. The structure consists of a Cu/Fe bilayer forming a bridge between two superconducting Al electrodes. In the superconducting state of Al electrodes, we have observed a double-peak peculiarity in differential resistance of the S-(N/F)-S structures at a bias voltage corresponding to the minigap. We claim that this effect (the splitting of the minigap) is due to an electron spin polarization in the normal metal which is induced by the ferromagnet. We have demonstrated that the double-peak peculiarity is converted to a single peak at a coercive applied field corresponding to zero magnetization of the Fe layer",

keywords = "METIS-289333, IR-82263",

author = "T.E. Golikova and F. Huebler and D. Beckmann and I.E. Batov and T. Karminskaya and T. Karminskaya and M..Y. Kupriyanov and Golubov, {Alexandre Avraamovitch} and V.V. Ryazanov",

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doi = "10.1103/PhysRevB.86.064416",

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Golikova, TE, Huebler, F, Beckmann, D, Batov, IE, Karminskaya, T, Karminskaya, T, Kupriyanov, MY, Golubov, AA & Ryazanov, VV 2012, 'Double proximity effect in hybrid planar superconductor-normal metal/ferromagnet-superconductor structures', Physical Review B (Condensed Matter and Materials Physics), vol. 86, no. 6, 064416, pp. 064416-1-064416-5. https://doi.org/10.1103/PhysRevB.86.064416

TY - JOUR

T1 - Double proximity effect in hybrid planar superconductor-normal metal/ferromagnet-superconductor structures

AU - Golikova, T.E.

AU - Huebler, F.

AU - Beckmann, D.

AU - Batov, I.E.

AU - Karminskaya, T.

AU - Kupriyanov, M..Y.

AU - Golubov, Alexandre Avraamovitch

AU - Ryazanov, V.V.

PY - 2012

Y1 - 2012

N2 - We have investigated the differential resistance of hybrid planar Al-(Cu/Fe)-Al submicron bridges at low temperatures and in weak magnetic fields. The structure consists of a Cu/Fe bilayer forming a bridge between two superconducting Al electrodes. In the superconducting state of Al electrodes, we have observed a double-peak peculiarity in differential resistance of the S-(N/F)-S structures at a bias voltage corresponding to the minigap. We claim that this effect (the splitting of the minigap) is due to an electron spin polarization in the normal metal which is induced by the ferromagnet. We have demonstrated that the double-peak peculiarity is converted to a single peak at a coercive applied field corresponding to zero magnetization of the Fe layer

AB - We have investigated the differential resistance of hybrid planar Al-(Cu/Fe)-Al submicron bridges at low temperatures and in weak magnetic fields. The structure consists of a Cu/Fe bilayer forming a bridge between two superconducting Al electrodes. In the superconducting state of Al electrodes, we have observed a double-peak peculiarity in differential resistance of the S-(N/F)-S structures at a bias voltage corresponding to the minigap. We claim that this effect (the splitting of the minigap) is due to an electron spin polarization in the normal metal which is induced by the ferromagnet. We have demonstrated that the double-peak peculiarity is converted to a single peak at a coercive applied field corresponding to zero magnetization of the Fe layer

KW - METIS-289333

KW - IR-82263

U2 - 10.1103/PhysRevB.86.064416

DO - 10.1103/PhysRevB.86.064416

M3 - Article

SN - 0163-1829

VL - 86

SP - 064416-1-064416-5

JO - Physical Review B (Condensed Matter and Materials Physics)

JF - Physical Review B (Condensed Matter and Materials Physics)

IS - 6

M1 - 064416

ER -