Critical switching current density induced by spin Hall effect in magnetic structures with first- and second-order perpendicular magnetic anisotropy
Abstract In this study, we derive analytical expressions for the critical switching current density induced by spin Hall effect in magnetic structures with the first- and second-order perpendicular magnetic anisotropy. We confirm the validity of the expressions by comparing the analytical results wi...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2017-11-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-017-15681-2 |
| _version_ | 1818428205588021248 |
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| author | Seok Jin Yun Kyung-Jin Lee Sang Ho Lim |
| author_facet | Seok Jin Yun Kyung-Jin Lee Sang Ho Lim |
| author_sort | Seok Jin Yun |
| collection | DOAJ |
| description | Abstract In this study, we derive analytical expressions for the critical switching current density induced by spin Hall effect in magnetic structures with the first- and second-order perpendicular magnetic anisotropy. We confirm the validity of the expressions by comparing the analytical results with those obtained from a macrospin simulation. Moreover, we find that for a particular thermal stability parameter, the switching current density can be minimized for a slightly positive second-order perpendicular magnetic anisotropy and the minimum switching current density can further be tuned using an external magnetic field. The analytical expressions are of considerable value in designing high-density magnetic random access memory and cryogenic memory. |
| first_indexed | 2024-12-14T14:57:55Z |
| format | Article |
| id | doaj.art-9fa5e3af53bb48ceaf211445c1500c09 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-14T14:57:55Z |
| publishDate | 2017-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-9fa5e3af53bb48ceaf211445c1500c092022-12-21T22:56:57ZengNature PortfolioScientific Reports2045-23222017-11-01711710.1038/s41598-017-15681-2Critical switching current density induced by spin Hall effect in magnetic structures with first- and second-order perpendicular magnetic anisotropySeok Jin Yun0Kyung-Jin Lee1Sang Ho Lim2Department of Materials Science and Engineering, Korea UniversityDepartment of Materials Science and Engineering, Korea UniversityDepartment of Materials Science and Engineering, Korea UniversityAbstract In this study, we derive analytical expressions for the critical switching current density induced by spin Hall effect in magnetic structures with the first- and second-order perpendicular magnetic anisotropy. We confirm the validity of the expressions by comparing the analytical results with those obtained from a macrospin simulation. Moreover, we find that for a particular thermal stability parameter, the switching current density can be minimized for a slightly positive second-order perpendicular magnetic anisotropy and the minimum switching current density can further be tuned using an external magnetic field. The analytical expressions are of considerable value in designing high-density magnetic random access memory and cryogenic memory.https://doi.org/10.1038/s41598-017-15681-2 |
| spellingShingle | Seok Jin Yun Kyung-Jin Lee Sang Ho Lim Critical switching current density induced by spin Hall effect in magnetic structures with first- and second-order perpendicular magnetic anisotropy Scientific Reports |
| title | Critical switching current density induced by spin Hall effect in magnetic structures with first- and second-order perpendicular magnetic anisotropy |
| title_full | Critical switching current density induced by spin Hall effect in magnetic structures with first- and second-order perpendicular magnetic anisotropy |
| title_fullStr | Critical switching current density induced by spin Hall effect in magnetic structures with first- and second-order perpendicular magnetic anisotropy |
| title_full_unstemmed | Critical switching current density induced by spin Hall effect in magnetic structures with first- and second-order perpendicular magnetic anisotropy |
| title_short | Critical switching current density induced by spin Hall effect in magnetic structures with first- and second-order perpendicular magnetic anisotropy |
| title_sort | critical switching current density induced by spin hall effect in magnetic structures with first and second order perpendicular magnetic anisotropy |
| url | https://doi.org/10.1038/s41598-017-15681-2 |
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