Thermoelectrical response in magnetic topological materials

Resolving the structure of energy bands in transport experiments is a major challenge in condensed matter physics and material science. Due to the large interest in topological effects these days, it is important to identify the concept for detecting the Berry curvature in a band structure. Nowadays, the common way to access the Berry curvature directly via measurements is the anomalous Hall effect, but the corresponding signal can be too small to be detected when the topological features of the band structure lie too far off the Fermi level. To solve this problem, we have investigated a method to probe the topological features of band structures utilizing anomalous thermoelectric transport. This method is especially interesting because it can detect features that are too far away from the Fermi level to influence the electrical transport effect.

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