By Yuki Shiomi
This booklet offers an research of the anomalous and topological corridor results in a few itinerant ferromagnets and helimagnets by way of measurements of corridor results pushed via electric or warmth present. New clarifications are supplied for spin-dependent corridor results caused by way of the Berry part, skew scattering, and scalar spin chirality.
The writer finds the scattering-free nature of the Berry-phase-induced anomalous corridor present by way of undertaking the 1st comparative learn of electric and thermal corridor results. The impurity-element dependence of the anomalous corridor impact attributable to skew scattering is systematically investigated within the low-resistivity sector for Fe. new examples exhibiting a topological corridor influence are present in helimagnets, within which nonzero scalar spin chirality arises from the modulation of spin constitution via Dzyaloshinsky–Moriya (DM) interplay. this kind of DM-interaction-mediated topological corridor impact is a brand new form of topological corridor impact. additionally the temperature dependence of topological corridor phrases within the thermal corridor impact and Nernst–Ettingshausen impression is located to be different from that during corridor effect.
These effects could be necessary for functions of spin present to units with low strength consumption.
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Anomalous and Topological Hall Effects in Itinerant Magnets (Springer Theses) by Yuki Shiomi