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6CCVD Research

Long-range spin wave imaging with nitrogen vacancy centers and time resolved magneto-optical measurements

At a Glance

Section titled “At a Glance”
MetadataDetails
Publication Date2025-03-01
JournalReview of Scientific Instruments
AuthorsCarolina LĂŒthi, Lukas Colombo, Franz Vilsmeier, C. H. Back
InstitutionsMunich Center for Quantum Science and Technology, Technical University of Munich

Abstract

Section titled “Abstract”

Spin waves, the fundamental excitations in magnetic materials, are promising candidates for realizing low-dissipation information processing in spintronics. The ability to visualize and manipulate coherent spin-wave transport is crucial for the development of spin wave-based devices. We use a recently discovered method utilizing nitrogen vacancy (NV) centers, point defects in the diamond lattice, to measure spin waves in thin film magnetic insulators by detecting their magnetic stray field. We experimentally demonstrate enhanced contrast in the detected wavefront amplitudes by imaging spin waves underneath a reference stripline and phenomenologically model the results. By extracting the spin wave dispersion and comparing NV center based spin wave measurements to spin wave imaging conducted through the well-established time-resolved magneto-optical Kerr effect, we discuss the advantages and limitations of employing NV centers as spin wave sensors.

Tech Support

Section titled “Tech Support”

Original Source

Section titled “Original Source”

References

Section titled “References”
  1. 1930 - Zur Theorie des Ferromagnetismus [Crossref]
  2. 1996 - Magnetization Oscillations and Waves
  3. 2008 - Spin Waves: Theory and Applications
  4. 2023 - Long-distance coherent propagation of high-velocity antiferromagnetic spin waves [Crossref]
  5. 2010 - Magnonics [Crossref]
  6. 2021 - Coherent spin-wave transport in an antiferromagnet [Crossref]
  7. 2010 - Yig magnonics [Crossref]
  8. 2014 - Magnon transistor for all-magnon data processing [Crossref]
  9. 1993 - The saga of YIG: Spectra, thermodynamics, interaction and relaxation of magnons in a complex magnet [Crossref]
  10. 2014 - Magnon dispersion in thin magnetic films [Crossref]

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