Localized Magnetic Fields in Arbitrary Directions Using Patterned Nanomagnets

McNeil, Robert P. G. and Schneble, R. Jeff and Kataoka, Masaya and Ford, Christopher J. B. and Kasama, Takeshi and Dunin-Borkowski, Rafal E. and Feinberg, Joshua M. and Harrison, Richard J. and Barnes, Crispin H. W. and Tse, Desmond H. Y. and Trypiniotis, Theodossis and Bland, J. Anthony C. and Anderson, David and Jones, Geb A. C. and Pepper, Michael (2010) Localized Magnetic Fields in Arbitrary Directions Using Patterned Nanomagnets. Nano Letters, 10 (5). pp. 1549-1553. DOI 10.1021/nl902949v

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Abstract

Control of the local magnetic fields desirable for spintronics and quantum information technology is not well developed. Existing methods produce either moderately small local fields or one field orientation. We present designs of patterned magnetic elements that produce remanent fields of 50 mT (potentially 200 mT) confined to chosen, submicrometer regions in directions perpendicular to an external initializing field. A wide variety of magnetic-field profiles on nanometer scales can be produced with the option of applying electric fields, for example, to move a quantum dot between regions where the magnetic-field direction or strength is different. We have confirmed our modeling by measuring the fields in one design using electron holography.

Item Type: Article
Uncontrolled Keywords: 2010AREP; IA60;
Subjects: 03 - Mineral Sciences
Divisions: 03 - Mineral Sciences
Journal or Publication Title: Nano Letters
Volume: 10
Page Range: pp. 1549-1553
Identification Number: 10.1021/nl902949v
Depositing User: Sarah Humbert
Date Deposited: 01 Sep 2011 07:24
Last Modified: 23 Jul 2013 10:02
URI: http://eprints.esc.cam.ac.uk/id/eprint/2178

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