New paper in Phys. Rev. Lett.

Our paper Probing coherences and itinerant magnetism has just been published in Physical Review Letters. You can find it at this link or on arXiv.

We use dynamical decoupling to preserve spin coherence against magnetic fluctuations, which allows us to study itinerant magnetism of lattice-trapped magnetic atoms, driven by magnetic dipole-dipole interactions, in the low-entropy and close-to-unit filling regime.

Our experiment reveals a dynamical instability in the SF regime, due to the dipolar coupling between magnons, and a new effect associated with DDIs in the strongly correlated itinerant regime. This experiment is made possible by a dynamic decoupling technique (DD), where π pulses are repeatedly applied to the sample. DD considerably increases the coherence lifetime.