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Quantum oscillations in flux-grown SmB6 with embedded aluminum

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arxiv 1806.00117 v1 pith:L22WRAN4 submitted 2018-05-31 cond-mat.str-el

S. M. Thomas , Xiaxin Ding , F. Ronning , V. Zapf , J. D. Thompson , Z. Fisk , J. Xia , P. F. S. Rosa This is my paper · ORCID
classification cond-mat.str-el
keywords aluminumsmb6measurementsoscillationscrystalsdhvaembeddedflux
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SmB6 is a candidate topological Kondo insulator that displays surface conduction at low temperatures. Here, we perform torque magnetization measurements as a means to detect de Haas-van Alphen (dHvA) oscillations in SmB6 crystals grown by aluminum flux. We find that dHvA oscillations occur in single crystals containing embedded aluminum, originating from the flux used to synthesize SmB6. Measurements on a sample with multiple, unconnected aluminum inclusions show that aluminum crystallizes in a preferred orientation within the SmB6 cubic lattice. The presence of aluminum is confirmed through bulk susceptibility measurements, but does not show a signature in transport measurements.

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