Current-driven periodic domain wall creation in ferromagnetic nanowires Academic Article uri icon

abstract

  • We predict the electrical generation and injection of domain walls into a ferromagnetic nano-wire without the need of an assisting magnetic field. Our analytical and numerical results show that above a critical current $j_{c}$ domain walls are injected into the nano-wire with a period $T sim (j-j_{c})^{-1/2}$. Importantly, domain walls can be produced periodically even in a simple exchange ferromagnet with uniaxial anisotropy, without requiring any standard "twisting" interaction like Dzyaloshinskii-Moriya or dipole-dipole interactions. We show analytically that this process and the period exponents are universal and do not depend on the peculiarities of the microscopic Hamiltonian. Finally we give a specific proposal for an experimental realization.

published proceedings

  • Physical Review B

altmetric score

  • 0.25

author list (cited authors)

  • Sitte, M., Everschor-Sitte, K., Valet, T., Rodrigues, D. R., Sinova, J., & Abanov, A. r.

citation count

  • 15

publication date

  • July 2016