Domain-wall motion and interfacial Dzyaloshinskii-Moriya interactions inPt/Co/Ir(tIr)/Tamultilayers

The Dzyaloshinskii-Moriya interaction (DMI) that appears at interfaces between magnetic layers and heavy metals is difficult to measure directly and reliably. Here, an international team of researchers from the UK, France, USA, and Switzerland show that two methods that rely on the effect of the DMI on either the creep velocity of a domain wall or the form of the spin-wave spectrum can be reconciled if the domain wall velocity measurements are treated within a proper scaling theory.