2000 character limit reached
All-magnonic spin-transfer torque and domain wall propagation (1106.4382v2)
Published 22 Jun 2011 in cond-mat.mes-hall and cond-mat.mtrl-sci
Abstract: 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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