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arXiv · 1105.5928

Nernst response of the Landau tubes in graphite across the quantum limit

Benoit Fauqué·Zengwei Zhu·Tim Murphy·Kamran Behnia
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Abstract

We report on a study of the Nernst effect in graphite extended up to 45 T. The Nernst response sharply peaks each time a Landau tube is squeezed inside the thermally fuzzy Fermi surface and presents a temperature-independent fixed point whenever the tube flattens to a single ring. Beyond the quantum limit, the onset of the field-induced phase transition leads to a drastic drop in the Nernst response signaling the sudden vanishing of Landau tubes. The magnitude of this drop suggests the destruction of multiple Landau tubes possibly as a result of simultaneous nesting of the electron and hole pockets.

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Benoit Fauqué, Zengwei Zhu, Tim Murphy, Kamran Behnia. 2011-06-17. Nernst response of the Landau tubes in graphite across the quantum limit. https://doi.org/10.1103/physrevlett.106.246405

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