Quantum oscillations in flux-grown SmB6 with embedded aluminum

Abstract

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.

References in corpus (24)

• Topological Kondo Insulators
• Surface electronic structure of the topological Kondo insulator candidate correlated electron system SmB6
• Low-temperature surface conduction in the Kondo insulator SmB${}_6$
• Quantum oscillations in Kondo Insulator SmB${}_6$
• Robust Surface Hall Effect and Nonlocal Transport in SmB6: Indication for an Ideal Topological Insulator
• Observation of in-gap surface states in the Kondo insulator SmB6 by photoemission
• Unconventional Fermi surface in an insulating state
• Quantum Oscillation from In-gap States and non-Hermitian Landau Level Problem
• Surface and Bulk Electronic Structure of the Strongly Correlated System SmB${}_6$ and Implications for a Topological Kondo Insulator
• Quantum oscillations without a Fermi surface and the anomalous de Haas-van Alphen effect
• Fermi surface in the absence of a Fermi liquid in the Kondo insulator SmB${}_6$
• Kondo Breakdown in Topological Kondo Insulators
• Quantum oscillation in narrow-gap topological insulators
• Kondo Breakdown and Quantum Oscillations in SmB${}_6$
• Mixed-valence insulators with neutral Fermi surfaces
• Samarium hexaboride: A trivial surface conductor
• Skyrme insulators: insulators at the brink of superconductivity
• Heavy surface state in a possible topological Kondo insulator: Magneto-thermoelectric transport on the (011)-plane of SmB${}_6$
• Hysteretic Magnetotransport in SmB6 at Low Magnetic Fields
• Magnetotransport Measurements of the Surface States of Samarium Hexaboride using Corbino Structures
• Magnetic and defect probes of the SmB${}_6$ surface state
• Breakdown of the Kondo insulating state in SmB6 by introducing Sm vacancies
• A highly asymmetric nodal semimetal in bulk SmB6
• Anomalies in a slightly doped insulator with strong particle-hole asymmetry and narrow gap---the case for SmB${}_6$?

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