This is how the experiment worked: The researchers used a microwave resonator (brown) that generated fields with frequencies in the microwave range, which excited the magnons in an yttrium iron garnet film (red) and formed a Bose-Einstein condensate. An inhomogeneous static magnetic field created forces acting on the condensate. Using probing laser light (green) focused on the surface of the sample, the researchers recorded the local density of the magnons and were able to observe their interaction in the condensate (Brillouin light scattering spectroscopy).
This is how the experiment worked: The researchers used a microwave resonator ( brown ) that generated fields with frequencies in the microwave range, which excited the magnons in an yttrium iron garnet film ( red ) and formed a Bose-Einstein condensate. An inhomogeneous static magnetic field created forces acting on the condensate. Using probing laser light ( green ) focused on the surface of the sample, the researchers recorded the local density of the magnons and were able to observe their interaction in the condensate (Brillouin light scattering spectroscopy). I. V. Borisenko et al. Nature Communications Data transmission that works by means of magnetic waves instead of electric currents - for many scientists, this is the basis of future technologies that will make transmission faster and individual components smaller and more energy-efficient. Magnons, the particles of magnetism, serve as moving information carriers.
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