Oscillating Nernst-Ettingshausen effect in Bismuth across the quantum limit

Abstract

In elemental Bismuth, 10${}^5$ atoms share a single itinerant electron. Therefore, a moderate magnetic field can confine electrons to the lowest Landau level. We report on the first study of metallic thermoelectricity in this regime. The main thermoelectric response is off-diagonal with an oscillating component several times larger than the non-oscillating background. When the first Landau level attains the Fermi Energy, both the Nernst and the Ettingshausen coefficients sharply peak, and the latter attains a temperature-independent maximum. A qualitative agreement with a theory invoking current-carrying edge excitations is observed.

Final published version

References in corpus (6)

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• First direct observation of Dirac fermions in graphite
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Cited by in corpus (7)

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• Signatures of Electron Fractionalization in Ultraquantum Bismuth
• Collective cyclotron motion of the relativistic plasma in graphene
• Spin Nernst effect and Nernst effect in two-dimensional electron systems
• Transport anomalies across the quantum limit in semimetallic Bi${}_{0.96}$Sb${}_{0.04}$
• Origin of the peaks in the Nernst coefficient of bismuth in strong magnetic fields
• Quantum Nernst Effect in a Bismuth Single Crystal