| In the now classic Tomonaga-Luttinger model the presence of the electron-electron interaction in one dimension is shown to profoundly change the properties of a system. The separation of charge and spin degrees of freedom is just one example. Though such an effect does not survive in the ferromagnetic case, a diagonal basis can still be found for the appropriate bosonic quasi-particles. This will have consequences for the spin-transfer-torque effects which lead to, for example, domain wall motion. To this end we consider what happens when a ferromagnetic Luttinger liquid has a region of non-collinearity present, i.e. a domain wall. The presence of the domain wall introduces a spin dependent scatterer into the problem, which will alter both transport and the static electronic properties of the system. Furthermore we show how the magnetization dynamics of the domain wall are modified for a Luttinger liquid. |
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