On the realization of artificial XY spin chains

Jozsa, C. (author): Center for NanoMaterials and COBRA Research Institute, Eindhoven University of Technology, The Netherlands

Koopmans, B. (author): Center for NanoMaterials and COBRA Research Institute, Eindhoven University of Technology, The Netherlands

(creator_code:org_t)

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Abstract Subject headings

Spin chains are the most elementary entities in the study of magnetic ordering behavior. The authors describe a route toward the realization of artificial XY spin chains. Using thin-film deposition and e-beam lithog., 300 and 550 nm diam. pillars consisting of alternating disks of permalloy and Al2O3 were made. Shape anisotropy forces the magnetization in plane, creating a chain of two-dimensional magnetic moments â†’i. The disks couple to each other by their dipolar stray fields, resulting in an interaction Jijâ†’iÂ·â†’j, with Jij the coupling between disks i and j. This form closely resembles a chain of xy spins, coupled by effective interactions Jij. The authors present a magnetic characterization of the pillars, and compare the results with model calcns. Also, spin dynamics and ordering phenomena are addressed.

By the author/editor: Van Kampen, M.; Soroka, Inna L.; Brucas, Rimantas; Hjörvarsson, Bjö ...; Wieser, R.; Usadel, K. D.; show more...; Hanson, M.; Kazakova, O.; Grabis, J.; Zabel, H.; Jozsa, C.; Koopmans, B.; show less...

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