http://repository.iitr.ac.in/handle/123456789/25985| Title: | Micromagnetic study of spin-transfer-torque switching of a ferromagnetic cross towards multi-state spin-transfer-torque based random access memory |
| Authors: | Roy U. Pramanik, Tanmoy Tsoi M. Register L.F. Banerjee S.K. |
| Published in: | Journal of Applied Physics |
| Abstract: | We study spin-transfer-torque (STT) switching of a cross-shaped ferromagnet with unequal branches as the free layer in a magnetic tunnel junction using micromagnetic simulations. The free layer in the magnetic tunnel junction is thus designed to have four stable energy states using shape anisotropy. Switching shows distinct regions with increasing current density. Stability of the states against thermal fluctuations is considered, and the validity of the results for different dimensions and material parameters of the free layer ferromagnet is investigated. The results could be useful for a multi-bit STT-based memory. © 2013 AIP Publishing LLC. |
| Citation: | Journal of Applied Physics, 113(22) |
| URI: | https://doi.org/10.1063/1.4811230 http://repository.iitr.ac.in/handle/123456789/25985 |
| Issue Date: | 2013 |
| Keywords: | Ferromagnets Magnetic tunnel junction Material parameter Micromagnetic simulations Micromagnetic study Random access memory Shape anisotropy Thermal fluctuations Ferromagnetic materials Magnets Superconducting materials Ferromagnetism |
| ISSN: | 218979 |
| Author Scopus IDs: | 55236897200 55938287000 7004077534 35598581900 55566203800 |
| Author Affiliations: | Roy, U., Microelectronics Research Center, University of Texas at Austin, Austin, TX 78758, United States Pramanik, T., Microelectronics Research Center, University of Texas at Austin, Austin, TX 78758, United States Tsoi, M., Department of Physics, University of Texas at Austin, Austin, TX 78712, United States Register, L.F., Microelectronics Research Center, University of Texas at Austin, Austin, TX 78758, United States Banerjee, S.K., Microelectronics Research Center, University of Texas at Austin, Austin, TX 78758, United States |
| Funding Details: | This work was supported in part by the NSF NNIN and NSF NASCENT ERC center. We thank Michael Donahue for help on OOMMF. M.T. is supported in part by NSF Grant DMR 1207577. National Science Foundation, NSF: DMR 1207577; Directorate for Mathematical and Physical Sciences, MPS: 1207577 |
| Corresponding Author: | Microelectronics Research Center, , Austin, TX 78758, United States |
| Appears in Collections: | Journal Publications [ECE] |
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