Quantum Oscillations in Flux-Grown SmB6 with Embedded Aluminum

Thomas, Sean Michael; Ding, Xiaxin; Ronning, Filip; Zapf, Vivien; Thompson, Joe David; Fisk, Zachary; Xia, Jing; Ferrari Silveira Rosa, Priscila

doi:10.1103/PhysRevLett.122.166401

Title: Quantum Oscillations in Flux-Grown ${SmB}_{6}$ with Embedded Aluminum

Journal Article · Tue Apr 23 00:00:00 EDT 2019 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.122.166401· OSTI ID:1511604

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Univ. of California, Irvine, CA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
National High Magnetic Field Laboratory, Los Alamos, NM (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Univ. of California, Irvine, CA (United States)

SmB₆ is a candidate topological Kondo insulator that displays surface conduction at low temperatures. In this study, 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. Lastly, we discuss the ramifications of our results.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: 89233218CNA000001

OSTI ID:: 1511604

Alternate ID(s):: OSTI ID: 1508441

Report Number(s):: LA-UR-18-24663; PRLTAO

Journal Information:: Physical Review Letters, Vol. 122, Issue 16; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 31 works

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Magnetic field-tuned Fermi liquid in a Kondo insulator Kushwaha, Satya K.; Chan, Mun K.; Park, Joonbum Nature Communications, Vol. 10, Issue 1 https://doi.org/10.1038/s41467-019-13421-w	journal	December 2019
Resonant inelastic x-ray scattering investigation of the crystal-field splitting of ${Sm}^{3 +}$ in ${SmB}_{6}$ Amorese, Andrea; Stockert, Oliver; Kummer, Kurt Physical Review B, Vol. 100, Issue 24 https://doi.org/10.1103/physrevb.100.241107	journal	December 2019

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