Authors:
- Provides experimental results on the thermal Hall effect and Nernst–Ettingshausen effect
- Systematically explains impurity dependence of the anomalous Hall effect caused by skew scattering in Fe
- Investigates a new topological Hall effect caused by the scalar spin chirality arising from the modulation of spin structure
- Nominated as an outstanding contribution by the University of Tokyo’s Applied Physics Department as their best thesis in 2012
Part of the book series: Springer Theses (Springer Theses)
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Table of contents (6 chapters)
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Front Matter
About this book
This book presents an investigation of the anomalous and topological Hall effects in some itinerant ferromagnets and helimagnets by measurements of Hall effects driven by electrical or heat current. New clarifications are provided for spin-dependent Hall effects induced by the Berry phase, skew scattering, and scalar spin chirality.
The author reveals the scattering-free nature of the Berry-phase-induced anomalous Hall current by conducting the first comparative study of electrical and thermal Hall effects. The impurity-element dependence of the anomalous Hall effect caused by skew scattering is systematically investigated in the low-resistivity region for Fe. Two new examples showing a topological Hall effect are found in helimagnets, in which nonzero scalar spin chirality arises from the modulation of spin structure through Dzyaloshinsky–Moriya (DM) interaction. Such a DM-interaction-mediated topological Hall effect is a new type of topological Hall effect. Also the temperature dependence of topological Hall terms in the thermal Hall effect and Nernst–Ettingshausen effect is found to be totally different from that in the electrical Hall effect.
Theseresults will be useful for applications of spin current to devices with low power consumption.
Authors and Affiliations
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, Department of Applied Physics, the University of Tokyo, Tokyo, Japan
Yuki Shiomi
About the author
Dr. Yuki Shiomi
Department of Applied Physics,
the University of Tokyo
Japan
Bibliographic Information
Book Title: Anomalous and Topological Hall Effects in Itinerant Magnets
Authors: Yuki Shiomi
Series Title: Springer Theses
DOI: https://doi.org/10.1007/978-4-431-54361-9
Publisher: Springer Tokyo
eBook Packages: Physics and Astronomy, Physics and Astronomy (R0)
Copyright Information: Springer Japan 2013
Hardcover ISBN: 978-4-431-54360-2Published: 12 April 2013
Softcover ISBN: 978-4-431-54708-2Published: 22 May 2015
eBook ISBN: 978-4-431-54361-9Published: 02 April 2013
Series ISSN: 2190-5053
Series E-ISSN: 2190-5061
Edition Number: 1
Number of Pages: XII, 89
Number of Illustrations: 25 b/w illustrations, 25 illustrations in colour
Topics: Strongly Correlated Systems, Superconductivity, Magnetism, Magnetic Materials, Electronic Circuits and Devices