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arXiv · 2111.03758

Observation of Quantum Oscillations in The Low Temperature Specific Heat of SmB$_6$

P. G. LaBarre·A. Rydh·J. Palmer-Fortune·J. A. Frothingham·S. T. Hannahs·A. P. Ramirez·N. Fortune
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Abstract

We report measurements of the low-temperature specific heat of Al-flux-grown samples of SmB$_6$ in magnetic fields up to 32 T. Quantum oscillations periodic in $1/H$ are observed between 8 and 32 T at selected angles between [001] and [111]. The observed frequencies and their angular dependence are consistent with previous magnetic torque measurements of SmB$_6$ but the effective masses inferred from Lifshitz-Kosevich theory are significantly larger and closer to those inferred from zero-field specific heat. Our results are thus consistent with a bulk density of states origin for the oscillations.

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P. G. LaBarre, A. Rydh, J. Palmer-Fortune, J. A. Frothingham, S. T. Hannahs, A. P. Ramirez, N. Fortune. 2021-11-05. Observation of Quantum Oscillations in The Low Temperature Specific Heat of SmB$_6$. https://arxiv.org/abs/2111.03758

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