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Updated: Jun 5, 2026

Magnetic Tweezers for the Measurement of Twist and Torque
Published on: May 19, 2014
Width dependence of the nonadiabatic spin-transfer torque in narrow domain walls
Stellan Bohlens1, Daniela Pfannkuche
1Institut für Theoretische Physik, Universität Hamburg, Germany.
Abstract:
We analytically determine the spatially varying spin-transfer torque within a domain wall. In the case of ballistic spin and diffusive charge transport, the spin-transfer torque as well as the local degree of nonadiabaticity oscillate within a domain wall. In narrow domain walls, the degree of nonadiabaticity ceases to be a constant material parameter but depends on the domain-wall width including a possible sign change, which is crucial for experiments and the technological utilization in spin-transfer-torque-based storage devices.
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