04438nam 22008055 450 991030040130332120200701105010.04-431-55660-510.1007/978-4-431-55660-2(CKB)3710000000454301(EBL)3567998(SSID)ssj0001534625(PQKBManifestationID)11995401(PQKBTitleCode)TC0001534625(PQKBWorkID)11494696(PQKB)10840885(DE-He213)978-4-431-55660-2(MiAaPQ)EBC3567998(PPN)187690642(EXLCZ)99371000000045430120150731d2015 u| 0engur|n|---|||||txtccrCharge and Heat Transport Phenomena in Electronic and Spin Structures in B20-type Compounds /by Naoya Kanazawa1st ed. 2015.Tokyo :Springer Japan :Imprint: Springer,2015.1 online resource (96 p.)Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053Description based upon print version of record.4-431-55659-1 Includes bibliographical references at the end of each chapters.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.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.Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053SuperconductivitySuperconductorsSurfaces (Physics)Interfaces (Physical sciences)Thin filmsPhase transformations (Statistical physics)Condensed materialsMaterials—SurfacesStrongly Correlated Systems, Superconductivityhttps://scigraph.springernature.com/ontologies/product-market-codes/P25064Surface and Interface Science, Thin Filmshttps://scigraph.springernature.com/ontologies/product-market-codes/P25160Quantum Gases and Condensateshttps://scigraph.springernature.com/ontologies/product-market-codes/P24033Surfaces and Interfaces, Thin Filmshttps://scigraph.springernature.com/ontologies/product-market-codes/Z19000Superconductivity.Superconductors.Surfaces (Physics).Interfaces (Physical sciences).Thin films.Phase transformations (Statistical physics).Condensed materials.Materials—Surfaces.Strongly Correlated Systems, Superconductivity.Surface and Interface Science, Thin Films.Quantum Gases and Condensates.Surfaces and Interfaces, Thin Films.621.4022Kanazawa Naoyaauthttp://id.loc.gov/vocabulary/relators/aut792811MiAaPQMiAaPQMiAaPQBOOK9910300401303321Charge and Heat Transport Phenomena in Electronic and Spin Structures in B20-type Compounds1773046UNINA