Field Dependence of Spin-Transfer Torque Switching Current in Perpendicular Magnetic Tunnel Junctions
| Autor: | Ricardo Sousa, Bernard Rodmacq, Bernard Dieny, Léa Cuchet, Laurent Vila, Stéphane Auffret |
|---|---|
| Přispěvatelé: | SPINtronique et TEchnologie des Composants (SPINTEC), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Materials science
Condensed matter physics Spin-transfer torque Field dependence 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Electronic Optical and Magnetic Materials Condensed Matter::Materials Science 0103 physical sciences Perpendicular [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] Torque Critical current Electrical and Electronic Engineering Current (fluid) 010306 general physics 0210 nano-technology ComputingMilieux_MISCELLANEOUS Nanopillar |
| Zdroj: | IEEE Transactions on Magnetics IEEE Transactions on Magnetics, Institute of Electrical and Electronics Engineers, 2014, 50 (11), pp.1-4. ⟨10.1109/TMAG.2014.2322390⟩ IEEE Transactions on Magnetics, 2014, 50 (11), pp.1-4. ⟨10.1109/TMAG.2014.2322390⟩ |
| ISSN: | 0018-9464 |
| DOI: | 10.1109/TMAG.2014.2322390⟩ |
| Popis: | Spin-transfer torque switching has been studied on (Co/Pt)/Ta/CoFeB/MgO/FeCoB/Ta patterned perpendicular magnetic tunnel junctions with nanopillar diameters ranging between 100 and 300 nm. Plotting current-field state diagrams, the critical current density for writing was found to be around 3 MA· cm -2 . The field-current dependence of the state transition boundary is linear, with the slope depending on material parameters. Using different thicknesses of top FeCoB free layers, we were able to estimate the Gilbert damping parameter α . |
| Databáze: | OpenAIRE |
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