Sun, Zhou-Zhou and Yang, Yu and Schliemann, J. (2018) Current-induced synchronized magnetization reversal of two-body Stoner particles with dipolar interaction. CHINESE PHYSICS B, 27 (6): 067501. ISSN 1674-1056, 1741-4199
Full text not available from this repository. (Request a copy)Abstract
We investigate magnetization reversal of two-body uniaxial Stoner particles, by injecting spin-polarized current through a spin-valve structure. The two-body Stoner particles perform synchronized dynamics and can act as an information bit in computer technology. In the presence of magnetic dipole-dipole interaction (DDI) between the two particles, the critical switching current I-c for reversing the two dipoles is analytically obtained and numerically verified in two typical geometric configurations. The I-c bifurcates at a critical DDI strength, where I-c can decrease to about 70% of the usual value without DDI. Moreover, we also numerically investigate the magnetic hysteresis loop, magnetization self-precession, reversal time and synchronization stability phase diagram for the two-body system in the synchronized dynamics regime.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ARBITRARY BOND-ANGLE; PAIR; NANOPARTICLES; EXCITATION; DYNAMICS; FIELD; magnetization reversal; spin-polarized current; Stoner particle |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group John Schliemann |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 17 Feb 2020 12:58 |
| Last Modified: | 17 Feb 2020 12:58 |
| URI: | https://pred.uni-regensburg.de/id/eprint/14479 |
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