Details

Autor(en) / Beteiligte

• Luo, Zhaochu
• Dao, Trong Phuong
• Hrabec, Aleš
• Vijayakumar, Jaianth
• Kleibert, Armin
• Baumgartner, Manuel
• Kirk, Eugenie
• Cui, Jizhai
• Savchenko, Tatiana
• Krishnaswamy, Gunasheel
• Heyderman, Laura J
• Gambardella, Pietro

Titel

Chirally coupled nanomagnets

Ist Teil von

• Science (American Association for the Advancement of Science), 2019-03, Vol.363 (6434), p.1435-1439

Ort / Verlag

United States: The American Association for the Advancement of Science

Erscheinungsjahr

2019

Quelle

Science Online科学在线

Beschreibungen/Notizen

• Magnetically coupled nanomagnets have multiple applications in nonvolatile memories, logic gates, and sensors. The most effective couplings have been found to occur between the magnetic layers in a vertical stack. We achieved strong coupling of laterally adjacent nanomagnets using the interfacial Dzyaloshinskii-Moriya interaction. This coupling is mediated by chiral domain walls between out-of-plane and in-plane magnetic regions and dominates the behavior of nanomagnets below a critical size. We used this concept to realize lateral exchange bias, field-free current-induced switching between multistate magnetic configurations as well as synthetic antiferromagnets, skyrmions, and artificial spin ices covering a broad range of length scales and topologies. Our work provides a platform to design arrays of correlated nanomagnets and to achieve all-electric control of planar logic gates and memory devices.