Download PDF by Yuki Shiomi: Anomalous and Topological Hall Effects in Itinerant Magnets

By Yuki Shiomi

This booklet provides an research of the anomalous and topological corridor results in a few itinerant ferromagnets and helimagnets by way of measurements of corridor results pushed by means of electric or warmth present. New clarifications are supplied for spin-dependent corridor results triggered 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 research of electric and thermal corridor results. The impurity-element dependence of the anomalous corridor impression because of skew scattering is systematically investigated within the low-resistivity quarter for Fe. new examples exhibiting a topological corridor influence are present in helimagnets, during which nonzero scalar spin chirality arises from the modulation of spin constitution via Dzyaloshinsky–Moriya (DM) interplay. the sort of DM-interaction-mediated topological corridor influence is a brand new form of topological corridor impression. additionally the temperature dependence of topological corridor phrases within the thermal corridor impact and Nernst–Ettingshausen impression is located to be completely different from that during corridor effect.

These effects may be beneficial 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

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