Sommaire:

Spin waves are the elementary excitations of magnetic materials and may play a key role in future information processing. They can be probed via the magnetic fields they generate, but this requires a technique with high sensitivity and nanometer sensor-sample distances. I will describe how the excellent magnetic-field sensitivity of nitrogen-vacancy spins in diamond can be used to explore spin-wave physics in ferromagnets. We have developed techniques to detect localized spin-wave resonances and thermally excited spin waves, and recently achieved a breakthrough by detecting a spin-wave chemical potential. These results open up exciting possibilities for nanoscale imaging and control of spin transport in mesoscopic spin systems.

Pour plus d'informations, merci de contacter Jacques V.