Artificial helical nanomagnets - Condensed Matter > Strongly Correlated ElectronsReportar como inadecuado

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Abstract: We demonstrate the existence of a helical state in patterned multilayernanomagnets. The artificial helimagnets consist of a stack of single domainferromagnetic disks separated by insulating nonmagnetic spacers. The spiralstate is shown to originate from the magnetostatic interaction between nearestand next nearest neighbouring single-domain disks in the stack. Since themagnetostatic interaction for such disks is rather strong, the helical stateshould be stable at room temperature. The helimagnets were fabricated from aCo-Si*3 multilayer using electron beam lithography. The helical state wasconfirmed by a magnetic stray field analysis using magnetic force microscopy.

Autor: A.A.Fraerman, B.A.Gribkov, S.A.Gusev, B. Hjorvarsson, A.Yu.Klimov, V.L.Mironov, D.S.Nikitushkin, V.V.Rogov, S.N.Vdovichev, H.Zabel


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