Abstract
We have investigated dynamic behavior of a three-dimensional magnetic domain wall (DW) having a Bloch-point structure in a cylindrical ferromagnetic nanowire via micromagnetic simulations. We have found the existence of an onset depinning behavior of the Bloch-point domain wall (BP-DW) motion under external magnetic fields, which is originated from overcoming an intrinsic pinning barrier generated from spin configuration of the Bloch-point domain wall inner structure. Ultrafast sequential switching of Bloch-point spins is expected to have a single precessional motion with negligible ringing on a few picoseconds time scale, which might be attractive for future spintronic applications.
Original language | English |
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Article number | 112405 |
Journal | Applied Physics Letters |
Volume | 102 |
Issue number | 11 |
DOIs | |
Publication status | Published - 18 Mar 2013 |