0−π Transitions in a Superconductor/Chiral Ferromagnet/Superconductor Junction Induced by a Homogeneous Cycloidal Spiral

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2008
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Champel, Thierry
Löfwander, Tomas
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Physical Review Letters. American Physical Society (APS). 2008, 100(7), 077003. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.100.077003
Zusammenfassung

We study the π phase in a superconductor-ferromagnet-superconductor Josephson junction, with a ferromagnet showing a cycloidal spiral spin modulation with in-plane propagation vector. Our results reveal a high sensitivity of the junction to the spiral order and indicate the presence of 0−π quantum phase transitions as function of the spiral wave vector. We find that the chiral magnetic order introduces chiral superconducting triplet pairs that strongly influence the physics in such Josephson junctions, with potential applications in nanoelectronics and spintronics.

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ISO 690CHAMPEL, Thierry, Tomas LÖFWANDER, Matthias ESCHRIG, 2008. 0−π Transitions in a Superconductor/Chiral Ferromagnet/Superconductor Junction Induced by a Homogeneous Cycloidal Spiral. In: Physical Review Letters. American Physical Society (APS). 2008, 100(7), 077003. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.100.077003
BibTex
@article{Champel2008-02-22Trans-58796,
  year={2008},
  doi={10.1103/PhysRevLett.100.077003},
  title={0−π Transitions in a Superconductor/Chiral Ferromagnet/Superconductor Junction Induced by a Homogeneous Cycloidal Spiral},
  number={7},
  volume={100},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={Champel, Thierry and Löfwander, Tomas and Eschrig, Matthias},
  note={Article Number: 077003}
}
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