Magnetotransport and trapping of magnetic domain walls in spin valves with nanoconstrictions

S. J. Noh; B. S. Chun; H. C. Wu; I. V. Shvets; I. C. Chu; M. Abid; S. Serrano-Guisan; Y. K. Kim

doi:10.1109/TMAG.2011.2158400

Magnetotransport and trapping of magnetic domain walls in spin valves with nanoconstrictions

S. J. Noh, B. S. Chun, H. C. Wu, I. V. Shvets, I. C. Chu, M. Abid, S. Serrano-Guisan, Y. K. Kim

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

In a magnetic nanowire, a magnetic domain wall (DW) can move along the wire when an applied magnetic field or a spin-polarized current is applied. A magnetic spin-valve device composed of two nanowires connected by a nanosized constriction was prepared, on which the presence of a pinned DW by nanoconstriction was detected by giant magnetoresistance effect. When the magnetic wire has a nanoconstriction, the DW configuration and width were largely affected by the shape of nanoconstriction. An asymmetric magnetotransport behavior observed in the experiments was interpreted by a micromagnetic modeling study.

Original language	English
Article number	6027720
Pages (from-to)	2436-2439
Number of pages	4
Journal	IEEE Transactions on Magnetics
Volume	47
Issue number	10
DOIs	https://doi.org/10.1109/TMAG.2011.2158400
Publication status	Published - 2011 Oct

Bibliographical note

Funding Information:
This work was supported in part by the National Research Foundation of Korea funded by the Ministry of Education, Science, and Technology (2011-0016497), the IT R&D Program of Ministry of Knowledge Economy (2009-F-004-01), and the KRCF-DRC Program. The work of B. S. Chun was supported by the National Research Foundation of Korea (NRF-2010-359-D00033).

Keywords

Nanoconstriction
magnetic domain wall (DW)
magnetoresistance
nanowire

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2011.2158400

Cite this

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title = "Magnetotransport and trapping of magnetic domain walls in spin valves with nanoconstrictions",

abstract = "In a magnetic nanowire, a magnetic domain wall (DW) can move along the wire when an applied magnetic field or a spin-polarized current is applied. A magnetic spin-valve device composed of two nanowires connected by a nanosized constriction was prepared, on which the presence of a pinned DW by nanoconstriction was detected by giant magnetoresistance effect. When the magnetic wire has a nanoconstriction, the DW configuration and width were largely affected by the shape of nanoconstriction. An asymmetric magnetotransport behavior observed in the experiments was interpreted by a micromagnetic modeling study.",

keywords = "Nanoconstriction, magnetic domain wall (DW), magnetoresistance, nanowire",

author = "Noh, {S. J.} and Chun, {B. S.} and Wu, {H. C.} and Shvets, {I. V.} and Chu, {I. C.} and M. Abid and S. Serrano-Guisan and Kim, {Y. K.}",

note = "Funding Information: This work was supported in part by the National Research Foundation of Korea funded by the Ministry of Education, Science, and Technology (2011-0016497), the IT R&D Program of Ministry of Knowledge Economy (2009-F-004-01), and the KRCF-DRC Program. The work of B. S. Chun was supported by the National Research Foundation of Korea (NRF-2010-359-D00033).",

year = "2011",

month = oct,

doi = "10.1109/TMAG.2011.2158400",

language = "English",

volume = "47",

pages = "2436--2439",

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AU - Noh, S. J.

AU - Chun, B. S.

AU - Wu, H. C.

AU - Shvets, I. V.

AU - Chu, I. C.

AU - Abid, M.

AU - Serrano-Guisan, S.

AU - Kim, Y. K.

N1 - Funding Information: This work was supported in part by the National Research Foundation of Korea funded by the Ministry of Education, Science, and Technology (2011-0016497), the IT R&D Program of Ministry of Knowledge Economy (2009-F-004-01), and the KRCF-DRC Program. The work of B. S. Chun was supported by the National Research Foundation of Korea (NRF-2010-359-D00033).

PY - 2011/10

Y1 - 2011/10

N2 - In a magnetic nanowire, a magnetic domain wall (DW) can move along the wire when an applied magnetic field or a spin-polarized current is applied. A magnetic spin-valve device composed of two nanowires connected by a nanosized constriction was prepared, on which the presence of a pinned DW by nanoconstriction was detected by giant magnetoresistance effect. When the magnetic wire has a nanoconstriction, the DW configuration and width were largely affected by the shape of nanoconstriction. An asymmetric magnetotransport behavior observed in the experiments was interpreted by a micromagnetic modeling study.

AB - In a magnetic nanowire, a magnetic domain wall (DW) can move along the wire when an applied magnetic field or a spin-polarized current is applied. A magnetic spin-valve device composed of two nanowires connected by a nanosized constriction was prepared, on which the presence of a pinned DW by nanoconstriction was detected by giant magnetoresistance effect. When the magnetic wire has a nanoconstriction, the DW configuration and width were largely affected by the shape of nanoconstriction. An asymmetric magnetotransport behavior observed in the experiments was interpreted by a micromagnetic modeling study.

KW - Nanoconstriction

KW - magnetic domain wall (DW)

KW - magnetoresistance

KW - nanowire

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DO - 10.1109/TMAG.2011.2158400

M3 - Article

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SN - 0018-9464

VL - 47

SP - 2436

EP - 2439

JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 10

M1 - 6027720

ER -

Magnetotransport and trapping of magnetic domain walls in spin valves with nanoconstrictions

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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