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Alberto M Ruiz1, Gonzalo Rivero-Carracedo1, Andrey Rybakov1

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This study introduces a novel chemical method for magnonics, using hybrid molecular/2D heterostructures to enhance spin wave properties. This approach allows for tailored design of advanced magnonic materials.

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Area of Science:

  • Condensed matter physics
  • Materials science
  • Quantum information science

Background:

  • Magnonics, utilizing spin waves for information technologies, faces limitations in system flexibility and variety.
  • Developing new magnonic materials is crucial for advancing information processing.

Purpose of the Study:

  • To propose and analyze a novel chemical approach to magnonics using hybrid molecular/2D heterostructures.
  • To investigate the modulation of magnetic properties and spin dynamics in CrSBr via organic molecule deposition.

Main Methods:

  • First-principles calculations were employed to analyze the effects of organic molecule deposition on CrSBr.
  • The study focused on changes in magnetic exchange, magnon dispersion, and spin dynamics.

Main Results:

  • Predicted modulation of magnetic exchange interactions.
  • Observed shifts in magnon frequencies and enhanced group velocities (up to ~7%).
  • A linear correlation was found between modulation effects and the donor character of molecules.

Conclusions:

  • The proposed chemical approach offers unprecedented flexibility in designing magnonic materials.
  • Tailoring magnetic and spin properties through molecular functionalization opens new avenues for magnonic devices.