Charge and heat transport phenomena in electronic and spin structures in B20-type compounds [electronic resource] / Naoya Kanazawa.
Kanazawa, Naoya, author.
2015
QC173
Available Online

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Title Charge and heat transport phenomena in electronic and spin structures in B20-type compounds [electronic resource] / Naoya Kanazawa.
Author Kanazawa, Naoya, author.
ISBN 9784431556602 electronic book
4431556605 electronic book
9784431556596
DOI https://doi.org/10.1007/978-4-431-55660-2
Published Tokyo : Springer, 2015.
Language English
Description 1 online resource (xii, 89 pages) : illustrations.
Item Number 10.1007/978-4-431-55660-2 doi
Call Number QC173
Dewey Decimal Classification 537/.21
Summary This thesis presents systematic experimental research on chiral-lattice crystals referred to as B20-type germanium compounds, especially focusing on skyrmion spin textures and Dirac electrons. An emergent electromagnetic field observed in MnGe demonstrates a formation of three-dimensional skyrmion crystals. Detection of skyrmions in nanoscale Hall bar devices made of FeGe is realized by measuring the topological Hall effect, a transport property reflecting emergent fields produced by skyrmions. By measuring the electron-filling dependence of thermopower in CoGe, a pronounced thermoelectric property in this compound is revealed to stem from the asymmetric density of states appearing at certain levels of Fermi energy in the Dirac electron state. The three main results named above will contribute to enriching a variety of novel electromagnetic responses of emergent gauge fields in solids, to realizing high-performance skyrmion-based magnetic memory, and to designing high-efficiency thermoelectric materials, respectively.
Note "Doctoral thesis accepted by the University of Tokyo, Tokyo, Japan."
Bibliography, etc. Note Includes bibliographical references.
Access Note Access limited to authorized users.
Source of Description Online resource; title from PDF title page (SpringerLink, viewed August 7, 2015).
Series Springer theses.
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Introduction
Experimental methods
Magnetic and transport properties in B20-type germanides
3D skyrmion-lattice and topological Hall effect in MnGe
Skyrmion formation in epitaxial FeGe thin films
3D Dirac electrons and large thermoelectric properties in CoGe
Conclusion.

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