All-magnonic spin-transfer torque and domain wall propagation

Details All-magnonic spin-transfer torque and domain wall propagation All-magnonic spin-transfer torque and domain wall propagation

2011-06-22

arxiv.org/abs/1106.4382v2

Phys. Rev. Lett. 107, 177207 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4.3 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.107.177207

The spin wave transportation through a transverse magnetic domain wall (DW) in a magnetic nanowire is studied. It is found that spin wave passes through a DW without reflection. A magnon, the quantum of the spin wave, carries opposite spins on the two sides of the DW. As a result, there is a spin angular momentum transfer from the propagating magnons to the DW. This magnonic spin-transfer torque can efficiently drive a DW to propagate in the opposite direction to that of the spin wave.

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