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.
Original language | English |
---|---|
Article number | 15314 |
Journal | Scientific reports |
Volume | 7 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2017 Dec 1 |
Bibliographical note
Funding Information:This research was supported by the Creative Materials Discovery Program through the National Research Foundation of Korea (No. 2015M3D1A1070465).
Publisher Copyright:
© 2017 The Author(s).
ASJC Scopus subject areas
- General