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arXiv · 2501.17609

Effect of bismuth crystal orientations in Nernst thermomagnetic devices

Alessandro Sola·Elena Sonia Olivetti·Adriano Di Pietro·Luca Martino·Vittorio Basso
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Abstract

In this work we report Nernst effect measurements in single crystal bismuth samples, with special emphasis on the characterization of the Nernst coefficient when the magnetic field, heat current and generated voltage are aligned along specific directions relative to the crystal axes. We found significant differences between the different orientations, reflecting the highly anisotropic electronic structure of bismuth and compatible with the Nernst characteristics obtained from polycrystalline samples. These results not only complement the experimental works published in the past but also underline the role of crystalline orientation in the context of transverse thermoelectric effects, towards an efficient design of thermomagnetic devices like the ordinary-Nernst-effect-based energy harvesters.

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Alessandro Sola, Elena Sonia Olivetti, Adriano Di Pietro, Luca Martino, Vittorio Basso. 2025-01-29. Effect of bismuth crystal orientations in Nernst thermomagnetic devices. https://arxiv.org/abs/2501.17609

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