| Autor: |
Kwiatkowski, Grzegorz J., Miranda, Ivan P., Holmqvist, Cecilia M., Canali, Carlo M., Lobanov, Igor S., Uzdin, Valery M., Manolescu, Andrei, Bessarab, Pavel F., Erlingsson, Sigurður I. |
| Rok vydání: |
2024 |
| Předmět: |
|
| Druh dokumentu: |
Working Paper |
| Popis: |
An optimal protocol for the current-induced switching of a perpendicularly magnetized nanoelement placed on the surface of a topological insulator is presented. The time dependence of both in-plane components of the surface current that induces the magnetization reversal via Dirac spin-orbit torque with minimal Joule heating is derived analytically as a function of the required switching time and material properties. It is demonstrated that a particularly energy-efficient switching is realized for vanishing dampinglike torque. The optimal reversal time providing a tradeoff between the switching speed and energy efficiency is derived. The obtained switching protocol is contrasted with the one realized in heavy-metal systems. Topological insulators provide a highly tunable platform for the realization of energy-efficient magnetization switching. |
| Databáze: |
arXiv |
| Externí odkaz: |
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