On the realization of artificial XY spin chains
2005 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 17, no 2, L27-L33 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2005. Vol. 17, no 2, L27-L33 p.
XY spin chain magnetization magnetic ordering anisotropy
IdentifiersURN: urn:nbn:se:kth:diva-78470DOI: 10.1088/0953-8984/17/2/L04ISI: 000226968700004OAI: oai:DiVA.org:kth-78470DiVA: diva2:492619
CAPLUS AN 2005:144918(Journal). QC 201203012012-02-082012-02-082012-03-01Bibliographically approved