Charge and Heat Transport Phenomena in Electronic and Spin by Naoya Kanazawa

By Naoya Kanazawa

This thesis offers systematic experimental learn on chiral-lattice crystals often called B20-type germanium compounds, in particular concentrating on skyrmion spin textures and Dirac electrons. An emergent electromagnetic box saw in MnGe demonstrates a formation of three-d skyrmion crystals. Detection of skyrmions in nanoscale corridor bar units made from FeGe is learned through measuring the topological corridor impact, a shipping estate reflecting emergent fields produced through skyrmions. by means of measuring the electron-filling dependence of thermopower in CoGe, a stated thermoelectric estate during this compound is published to stem from the uneven density of states showing at sure degrees of Fermi strength within the Dirac electron state.

The 3 major effects named above will give a contribution to enriching a number of novel electromagnetic responses of emergent gauge fields in solids, to figuring out high-performance skyrmion-based magnetic reminiscence, and to designing high-efficiency thermoelectric fabrics, respectively.

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