Localized Magnetic Fields in Arbitrary Directions Using Patterned Nanomagnets

被引：20

作者：

McNeil, Robert P. G. ^{[1
]}

Schneble, R. Jeff ^{[1
]}

Kataoka, Masaya ^{[1
]}

Ford, Christopher J. B. ^{[1
]}

Kasama, Takeshi ^{[2
]}

Dunin-Borkowski, Rafal E. ^{[2
,4
]}

Feinberg, Joshua M. ^{[3
,5
]}

Harrison, Richard J. ^{[3
]}

Barnes, Crispin H. W. ^{[1
]}

Tse, Desmond H. Y. ^{[1
]}

Trypiniotis, Theodossis ^{[1
]}

Bland, J. Anthony C. ^{[1
]}

Anderson, David ^{[1
]}

Jones, Geb A. C. ^{[1
]}

Pepper, Michael ^{[1
]}

机构：

[1] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[2] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England

[3] Univ Cambridge, Dept Earth Sci, Cambridge CB2 3EQ, England

[4] Tech Univ Denmark, Ctr Electron Nanoscopy, DK-2800 Kongens Lyngby, Denmark

[5] Univ Minnesota, Dept Geol & Geophys, Minneapolis, MN USA

来源：

NANO LETTERS | 2010年 / 10卷 / 05期

基金：

英国工程与自然科学研究理事会;

关键词：

Magnetic field; nanomagnet; permalloy; electron holography; SINGLE-ELECTRON SPIN; ARRAYS; RINGS;

D O I：

10.1021/nl902949v

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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 held orientation. We present designs of patterned magnetic elements that produce remanent fields of 50 mT (potentially 200 Rif) confined to chosen, submicrometer regions in directions perpendicular to an external initializing field. A wide variety of magnetic-field profiles on nanorneter scales can be produced with the option of applying electric fields, for example, to move a quantum clot 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.

引用

页码：1549 / 1553

页数：5

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