On the realization of artificial XY spin chains

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

Source: Journal of Physics: Condensed Matter, Volume 17, Number 2, 19 January 2005 , pp. L27-L33(1)

Publisher: Institute of Physics Publishing

Key:
Free Content - Free Content
New Content - New Content
Subscribed Content - Subscribed Content
Free Trial Content - Free Trial Content

Abstract:

Spin chains are the most elementary entities in the study of magnetic ordering behaviour. In this letter, we describe a route toward the realization of artificial XY spin chains. Using thin-film deposition and e-beam lithography, 300 and 550 nm diameter pillars consisting of alternating discs of permalloy and Al2O3 have been made. Shape anisotropy forces the magnetization in plane, creating a chain of two-dimensional magnetic moments &vec {S_i} ;. The discs couple to each other by their dipolar stray fields, resulting in an interaction of the form &J_{ij} vec {S}_i cdot vec {S}_j ;, with Jij the coupling between discs i and j. This form closely resembles a chain of xy spins, coupled by effective interactions Jij. We present a magnetic characterization of the pillars, and compare the results with model calculations. Also, spin dynamics and ordering phenomena are addressed.

Document Type: Research article

DOI: 10.1088/0953-8984/17/2/L04

The full text electronic article is available for purchase. You will be able to download the full text electronic article after payment.

$42.00 plus tax      Refund Policy

 

OR

Back to top

Key:
Free Content - Free Content
New Content - New Content
Subscribed Content - Subscribed Content
Free Trial Content - Free Trial Content
Share this item with others: These icons link to social bookmarking sites where readers can share and discover new web pages.
Page Help Click here for Page Help
Shopping cart
Tools
Sign in






Need to register?
Sign up here
Text size: A | A | A | A