Probing dipole coupled nanomagnets using magnetoresistance read

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

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20 Scopus citations

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 languageEnglish (US)
Article number092502
JournalApplied Physics Letters
Volume98
Issue number9
DOIs
StatePublished - Feb 28 2011

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