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Ferromagnetic Josephson junction with precessing magnetization.

Manuel Houzet1

  • 1Commissariat à l'Energie Atomique, INAC, SPSMS, Grenoble, France.

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|September 4, 2008
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Summary
This summary is machine-generated.

We calculated Josephson currents in superconductor-ferromagnet-superconductor junctions. A large critical current is predicted due to a dynamically induced long-range triplet proximity effect, observable in hybrid devices near ferromagnetic resonance.

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Area of Science:

  • Condensed matter physics
  • Superconductivity
  • Magnetism

Background:

  • Superconductor-ferromagnet-superconductor (SFS) junctions are crucial for understanding proximity effects.
  • Precessing magnetization in ferromagnets introduces complex dynamics in hybrid structures.

Purpose of the Study:

  • To calculate the Josephson current in a diffusive SFS junction with precessing magnetization.
  • To investigate the possibility of a stationary supercurrent under non-equilibrium conditions.

Main Methods:

  • Utilized the quasiclassical theory of superconductivity.
  • Analyzed the behavior of Josephson currents in phase-biased SFS junctions.

Main Results:

  • Predicted a stationary supercurrent flow despite non-equilibrium conditions.
  • Identified a large critical current arising from a dynamically induced long-range triplet proximity effect.

Conclusions:

  • The study predicts a significant critical current in diffusive SFS junctions with precessing magnetization.
  • The dynamically induced long-range triplet proximity effect offers a pathway for experimental observation in hybrid devices near ferromagnetic resonance.