Optimal time-dependent polarized current pattern for fast domain wall propagation in nanowires: Exact solutions for biaxial and uniaxial anisotropies - Condensed Matter > Mesoscale and Nanoscale PhysicsReport as inadecuate




Optimal time-dependent polarized current pattern for fast domain wall propagation in nanowires: Exact solutions for biaxial and uniaxial anisotropies - Condensed Matter > Mesoscale and Nanoscale Physics - Download this document for free, or read online. Document in PDF available to download.

Abstract: One of the important issues in nanomagnetism is to lower the current neededfor a technologically useful domain wall DW propagation speed. Based on themodified Landau-Lifshitz-Gilbert LLG equation with both Slonczewskispin-transfer torque and the field-like torque, we derive the optimal spincurrent pattern for fast DW propagation along nanowires. Under such conditions,the DW velocity in biaxial wires can be enhanced as much as ten times comparedto the velocities achieved in experiments so far. Moreover, the fast variationof spin polarization can help DW depinning. Possible experimental realizationsare discussed.



Author: P. Yan, Z. Z. Sun, J. Schliemann, X. R. Wang

Source: https://arxiv.org/







Related documents