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High-pressure studies into the thermal properties of MnSi

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B20 transition metal compound MnSi presents a model system to study weak itinerant ferromagnetism. The competition of various energy scales in such a system leads to the formation of a unique helimagnetic order. MnSi undergoes a transition into helical magnetic state at temperatures below TN = 30K. The application of a magnetic field has already produced some intriguing results in the discovery of novel magnetic dynamical states and magnetic transport phenomena.

In this work we present a high-pressure study of the thermal transport properties on single crystal MnSi. In particular, the results for the thermopower and electrical resistivity are presented over a broad range of pressures up to 100kbar. The findings are discussed and compared to chemical doping studies in FexMn1-xSi within the framework of spin-fluctuations.

This talk is part of the Quantum Matter Seminar series.

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