Effect of Temperature on Magnetic Solitons Induced by Spin-Transfer Torque
Sergi Lendínez, Jinting Hang, Saül Vélez, Joan Manel Hernández, Dirk Backes, Andrew D. Kent, and Ferran Macià. Phys. Rev. Applied 7, 054027. DOI:https://doi.org/10.1103/PhysRevApplied.7.054027
The quest to harness dynamic collective excitations, such as spin waves or dissipative solitons, as a basis for spintronics continues. This study shows that thermal fluctuations have a significant effect on the dynamics of magnetic excitations induced by spin-transfer torque (STT), and provide a pathway to controlling spin-wave condensation, propagation, stochasticity, and stability. As it turns out, droplet solitons nucleate for lower current densities at lower temperatures, in contrast to typical STT-induced switching between static magnetic states.