摘要
Magnon density distribution can be affected by the spin-transfer torque in a perpendicular ferromagnetic anisotropy nanowire. We obtain the analytical expression for the critical current condition. For the cases of below and above the critical value, the magnon density distribution admits bright and dark soliton states, respectively. Moreover, we discuss two-soliton collision properties that are modulated by the current. Each magnetic soliton exhibits no changes in both velocity and width before and after the collision.
Magnon density distribution can be affected by the spin-transfer torque in a perpendicular ferromagnetic anisotropy nanowire. We obtain the analytical expression for the critical current condition. For the cases of below and above the critical value, the magnon density distribution admits bright and dark soliton states, respectively. Moreover, we discuss two-soliton collision properties that are modulated by the current. Each magnetic soliton exhibits no changes in both velocity and width before and after the collision.
基金
supported by the Natural Science Foundation of Hebei Province,China(Grant Nos.A2012202022 and A2012202023)
the Aid Program for Young Teacher of Hunan University,China
the Project-sponsored by SRF for ROCS,SEM,China
the Aid Program for Science and Technology Innovative Research Team in Higher Educational Instituions of Hunan Province,China
