Abstract
We compute the power spectrum of the noise in the current due to spin motive forces by a fluctuating
domain wall. We find that the power spectrum of the noise in the current is colored and depends on
the Gilbert damping, the spin transfer torque parameter beta, and the domain-wall pinning potential and
magnetic anisotropy. We also determine the average current induced by the thermally assisted motion of
a domain wall that is driven by an external magnetic field. Our results suggest that measuring the power
spectrum of the noise in the current in the presence of a domain wall may provide a new method for
characterizing the current-to-domain-wall coupling in the system.
Original language | English |
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Pages (from-to) | 538-542 |
Number of pages | 5 |
Journal | Solid State Communications |
Volume | 150 |
Issue number | 11-12 |
Publication status | Published - 2009 |