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Reducing the critical current for short-pulse spin-transfer switching of nanomagnets
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10.1063/1.2045552
/content/aip/journal/apl/87/11/10.1063/1.2045552
http://aip.metastore.ingenta.com/content/aip/journal/apl/87/11/10.1063/1.2045552
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Figures

Image of FIG. 1.
FIG. 1.

(a) SEM image of a nanopillar. Patterning with electron-beam lithography produces reproducible approximate ellipses with dimensions. (b) Cross-sectional schematic for nanopillar structure with convention for current direction. (c) Minor loop of free layer and (d) spin transfer curve at , with convention for current shown in (b) for a typical device.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Average switching current vs natural log of current ramp rate for a Py free layer in the P–AP (★) and AP–P (∎) switching directions. Error bars represent dispersion in switching current for 20 current sweeps at a given ramp rate. Lines shown are fits to data with a Kurkijarvi-type model. Switching probabilities vs pulse amplitude and single-domain simulation fits for (b) AP–P and (c) P–AP transitions of a Py free layer. Pulse widths for each curve from left to right are (◆), (▴), (●), and (★). Lines drawn are curves through points generated by LLG simulation. (d) Switching probabilities vs pulse amplitude and simulations (solid lines) for AP–P switching of a PyCu free layer. All measurements were taken at .

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/content/aip/journal/apl/87/11/10.1063/1.2045552
2005-09-09
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Reducing the critical current for short-pulse spin-transfer switching of nanomagnets
http://aip.metastore.ingenta.com/content/aip/journal/apl/87/11/10.1063/1.2045552
10.1063/1.2045552
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