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O: Fachverband Oberflächenphysik

O 60: Mini-Symposium: Dzyaloshinskii-Moriya Interaction (DMI) in magnetic layered systems I

O 60.2: Invited Talk

Wednesday, March 3, 2021, 11:00–11:30, R3

Synthetic chiral magnets and domain wall logic circuits — •Pietro Gambardella — Department of Materials, ETH Zurich

The ability to engineer the interactions in assemblies of nanoscale magnets is central to the development of artificial spin systems and spintronic technologies. Following the emergence of the Dzyaloshinskii-Moriya interaction (DMI) in thin film magnetism, new routes have been opened to couple nanomagnets via strong chiral interactions, which is complementary to the established dipolar and exchange coupling mechanisms. In this talk, we show how two-dimensional synthetic antiferromagnets, skyrmions, and artificial spin systems can be realized by simultaneous control of the DMI and magnetic anisotropy in ultrathin magnetic films. In addition, we show that the combination of DMI and current-induced spin-orbit torques can be exploited to achieve field-free switching of synthetic magnetic elements as well as all-electric operation of domain wall logic circuits.