Low-field current-hysteretic oscillations in spin-transfer nanocontacts

Physical Review B - Condensed Matter and Materials Physics

Volumn 75, Issue 14, 2007, Pages

  Pufall, M R ^a   Rippard, W H ^a   Schneider, M L ^a   Russek, S E ^a  

^a NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 34247328195     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.75.140404     Document Type: Article

References (30)

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30. Currents of opposite sign, i.e., negative currents, sometimes-but infrequently-drive small-angle dynamics for low fields. These are never observed for high fields, and should occur only if (1) Mfree and Mfixed are not parallel, and (2) the parallel configuration is somehow destabilized. This would occur if one, but not both, of the layers were in a vortexlike state.