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Charge and Heat Transport Phenomena in Electronic and Spin Structures in B20-type Compounds

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 c...

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Detalles Bibliográficos
Clasificación:Libro Electrónico
Autor principal: Kanazawa, Naoya (Autor)
Autor Corporativo: SpringerLink (Online service)
Formato: Electrónico eBook
Idioma:Inglés
Publicado: Tokyo : Springer Japan : Imprint: Springer, 2015.
Edición:1st ed. 2015.
Colección:Springer Theses, Recognizing Outstanding Ph.D. Research,
Temas:
Acceso en línea:Texto Completo

MARC

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100 1 |a Kanazawa, Naoya.  |e author.  |4 aut  |4 http://id.loc.gov/vocabulary/relators/aut 
245 1 0 |a Charge and Heat Transport Phenomena in Electronic and Spin Structures in B20-type Compounds  |h [electronic resource] /  |c by Naoya Kanazawa. 
250 |a 1st ed. 2015. 
264 1 |a Tokyo :  |b Springer Japan :  |b Imprint: Springer,  |c 2015. 
300 |a XII, 89 p. 60 illus., 52 illus. in color.  |b online resource. 
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490 1 |a Springer Theses, Recognizing Outstanding Ph.D. Research,  |x 2190-5061 
505 0 |a 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. 
520 |a 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. 
650 0 |a Superconductivity. 
650 0 |a Superconductors. 
650 0 |a Surfaces (Physics). 
650 0 |a Quantum statistics. 
650 0 |a Surfaces (Technology). 
650 0 |a Thin films. 
650 1 4 |a Superconductivity. 
650 2 4 |a Surface and Interface and Thin Film. 
650 2 4 |a Quantum Gases and Condensates. 
650 2 4 |a Surfaces, Interfaces and Thin Film. 
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