Abstract
With a widely available magnetic field of 10 T, one can attain the quantum limit in bismuthand graphite. At zero magnetic field, these two elemental semi-metals host a dilute liquid ofcarriers of both signs. All quasi-particles are confined to a few Landau tubes,when the quantum limit is attained. Each time a Landau tube is squeezed beforedefinitely leaving the Fermi surface, the Nernst response sharply peaks. For bismuth,additional Nernst peaks, unexpected in the non-interacting picture, are resolvedbeyond the quantum limit. The amplitudes of these unexpected Nernst peaksbecome more pronounced for the samples with the longest electron mean free path.
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