On the realization of artificial XY spin chains

M. Kampen, van, I.L. Soroka, R. Brucas, B. Hjoervarsson, R. Wieser, K.D. Usadel, M. Hanson, O. Kazakova, J. Grabis, H. Zabel, C. Jozsa, B. Koopmans

Research output: Contribution to journalArticleAcademicpeer-review

15 Citations (Scopus)

Abstract

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 ->i. The disks couple to each other by their dipolar stray fields, resulting in an interaction Jij->i.->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. [on SciFinder (R)]
Original languageEnglish
Pages (from-to)L27-L33
JournalJournal of Physics : Condensed Matter
Volume17
Issue number2
DOIs
Publication statusPublished - 2005

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