Probing dipole coupled nanomagnets using magnetoresistance read

Andrew Lyle; Angeline Klemm; Jonathan Harms; Yisong Zhang; Hui Zhao; Jian Ping Wang

doi:10.1063/1.3558915

Probing dipole coupled nanomagnets using magnetoresistance read

Andrew Lyle, Angeline Klemm, Jonathan Harms, Yisong Zhang, Hui Zhao, Jian Ping Wang

Electrical and Computer Engineering

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

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Abstract

We experimentally demonstrated magnetoresistance (MR) read of dipole coupled nanomagnets using magnetic tunnel junctions. The MR allowed the magnetic state of individual nanomagnets to be electrically measured. The sensitivity of the read scheme enabled a systematic study regarding the nanomagnet spacing and revealed a transition in behavior. Below a spacing of 15 nm the dipole field overcomes the individual shape anisotropy and redefines the individual element easy axis along the direction transmission line. The demonstration of MR electrical read marks a significant step forward for applications such as magnetic quantum cellular automata logic devices.

Original language	English (US)
Article number	092502
Journal	Applied Physics Letters
Volume	98
Issue number	9
DOIs	https://doi.org/10.1063/1.3558915
State	Published - Feb 28 2011

Bibliographical note

Funding Information:
This work was supported partially by the MRSEC Program of the National Science Foundation under Award No. DMR-0212302 and DMR-0819885 and NSF ECCS (Grant No. 0702264).

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abstract = "We experimentally demonstrated magnetoresistance (MR) read of dipole coupled nanomagnets using magnetic tunnel junctions. The MR allowed the magnetic state of individual nanomagnets to be electrically measured. The sensitivity of the read scheme enabled a systematic study regarding the nanomagnet spacing and revealed a transition in behavior. Below a spacing of 15 nm the dipole field overcomes the individual shape anisotropy and redefines the individual element easy axis along the direction transmission line. The demonstration of MR electrical read marks a significant step forward for applications such as magnetic quantum cellular automata logic devices.",

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AU - Klemm, Angeline

AU - Harms, Jonathan

AU - Zhang, Yisong

AU - Zhao, Hui

AU - Wang, Jian Ping

N1 - Funding Information: This work was supported partially by the MRSEC Program of the National Science Foundation under Award No. DMR-0212302 and DMR-0819885 and NSF ECCS (Grant No. 0702264).

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Y1 - 2011/2/28

N2 - We experimentally demonstrated magnetoresistance (MR) read of dipole coupled nanomagnets using magnetic tunnel junctions. The MR allowed the magnetic state of individual nanomagnets to be electrically measured. The sensitivity of the read scheme enabled a systematic study regarding the nanomagnet spacing and revealed a transition in behavior. Below a spacing of 15 nm the dipole field overcomes the individual shape anisotropy and redefines the individual element easy axis along the direction transmission line. The demonstration of MR electrical read marks a significant step forward for applications such as magnetic quantum cellular automata logic devices.

AB - We experimentally demonstrated magnetoresistance (MR) read of dipole coupled nanomagnets using magnetic tunnel junctions. The MR allowed the magnetic state of individual nanomagnets to be electrically measured. The sensitivity of the read scheme enabled a systematic study regarding the nanomagnet spacing and revealed a transition in behavior. Below a spacing of 15 nm the dipole field overcomes the individual shape anisotropy and redefines the individual element easy axis along the direction transmission line. The demonstration of MR electrical read marks a significant step forward for applications such as magnetic quantum cellular automata logic devices.

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Probing dipole coupled nanomagnets using magnetoresistance read

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