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Tailoring superconducting states in superconductor-ferromagnet hybrids

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2020

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Stellhorn, Annika
Sarkar, Anirban
Kentzinger, Emmanuel
Barthel, Juri
Nandi, Shibabrata
Zakalek, Paul
Schubert, Jürgen
Brückel, Thomas

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New Journal of Physics. Institute of Physics Publishing (IOP). 2020, 22(9), 093001. eISSN 1367-2630. Available under: doi: 10.1088/1367-2630/abaa02

Zusammenfassung

We present results of a comprehensive investigation of two phenomena arising in superconductor(S)/ferromagnet(F) heterostructures of Nb on FePd with a lateral magnetic domain pattern: domain-superconductivity and spin-triplet Cooper pair generation. Resistivity measurements in a magnetic field applied out-of-plane to a Nb/FePd (S/F) sample with high magnetocrystalline anisotropy give evidence of stray field generated domain-wall- and reverse-domain-superconductivity. A corresponding bilayer comprising low magnetocrystalline anisotropy exhibits spin-triplet Cooper pair generation and a notable high variation of the S critical temperature due to spin-triplet generation (ΔTc) of 100 mK in an in-plane applied field. Using reference samples we can clearly distinguish stray field from proximity effects. The relevance of the characteristic S and F length scales related to the observed proximity effects is discussed.

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ISO 690STELLHORN, Annika, Anirban SARKAR, Emmanuel KENTZINGER, Juri BARTHEL, Angelo DI BERNARDO, Shibabrata NANDI, Paul ZAKALEK, Jürgen SCHUBERT, Thomas BRÜCKEL, 2020. Tailoring superconducting states in superconductor-ferromagnet hybrids. In: New Journal of Physics. Institute of Physics Publishing (IOP). 2020, 22(9), 093001. eISSN 1367-2630. Available under: doi: 10.1088/1367-2630/abaa02
BibTex
@article{Stellhorn2020-09-02Tailo-51058,
  year={2020},
  doi={10.1088/1367-2630/abaa02},
  title={Tailoring superconducting states in superconductor-ferromagnet hybrids},
  number={9},
  volume={22},
  journal={New Journal of Physics},
  author={Stellhorn, Annika and Sarkar, Anirban and Kentzinger, Emmanuel and Barthel, Juri and Di Bernardo, Angelo and Nandi, Shibabrata and Zakalek, Paul and Schubert, Jürgen and Brückel, Thomas},
  note={Article Number: 093001}
}
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