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Lumped circuit model for inductive antenna spin-wave transducers.

Frederic Vanderveken1,2, Vasyl Tyberkevych3, Giacomo Talmelli4,5

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This summary is machine-generated.

We developed a circuit model for inductive antennas that generate spin waves in magnetic materials. This model helps optimize antenna design for magnonic devices and nanoscale applications.

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Area of Science:

  • Physics
  • Electrical Engineering
  • Materials Science

Background:

  • Inductive antennas are crucial for exciting spin waves in ferromagnetic materials for magnonic devices.
  • Understanding the electrical properties of these antenna-transducer systems is essential for device performance.

Purpose of the Study:

  • To derive a lumped circuit model for inductive antenna spin-wave transducers.
  • To analyze the impact of ferromagnetic resonance and spin wave excitation on antenna inductance.
  • To assess scaling properties and energy efficiency for nanoscale applications.

Main Methods:

  • Derivation of a lumped circuit model incorporating Ohmic resistance and inductance.
  • Inclusion of additional inductance from spin wave excitation in a ferromagnetic medium.
  • Analysis of a wire antenna on a ferromagnetic waveguide as a characteristic example.

Main Results:

  • The model accurately captures the behavior of inductive antenna spin-wave transducers.
  • It reveals how spin wave excitation affects the antenna's effective inductance.
  • Scaling properties and energy efficiency of antennas were quantitatively assessed.

Conclusions:

  • The derived circuit model provides a valuable tool for designing and optimizing inductive antenna spin-wave transducers.
  • The model highlights challenges and potential solutions for miniaturizing antenna transducers to the nanoscale.
  • This work contributes to the advancement of magnonic devices and spintronic technologies.