Current-driven periodic domain wall creation in ferromagnetic nanowires
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© 2016 American Physical Society. We predict the electrical generation and injection of domain walls into a ferromagnetic nanowire without the need of an assisting magnetic field. Our analytical and numerical results show that above a critical current jc domain walls are injected into the nanowire with a period T∼(j-jc)-1/2. Importantly, domain walls can be produced periodically even in a simple exchange ferromagnet with uniaxial anisotropy, without requiring any standard "twisting" interaction such as 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.
author list (cited authors)
Sitte, M., Everschor-Sitte, K., Valet, T., Rodrigues, D. R., Sinova, J., & Abanov, A. r
complete list of authors
Sitte, Matthias||Everschor-Sitte, Karin||Valet, Thierry||Rodrigues, Davi R||Sinova, Jairo||Abanov, Ar