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Intrinsic bulk quantum oscillations in a bulk unconventional insulator SmB6
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Hartstein, Máté, Liu, Hsu, Hsu, Yu-Te, Tan, Beng S., Ciomaga Hatnean, Monica, Balakrishnan, Geetha and Sebastian, Suchitra E. (2020) Intrinsic bulk quantum oscillations in a bulk unconventional insulator SmB6. iScience, 23 (11). 101632. doi:10.1016/j.isci.2020.101632
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WRAP-intrinsic-bulk-quantum-oscillations-bulk-unconventional-insulator-SmB6-Balakrishnan-2020.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (2485Kb) | Preview |
Official URL: http://dx.doi.org/10.1016/j.isci.2020.101632
Abstract
The finding of bulk quantum oscillations in the Kondo insulator SmB6 proved a considerable surprise. Subsequent measurements of bulk quantum oscillations in other correlated insulators including YbB12 lent support to our discovery of a class of bulk unconventional insulators that host bulk quantum oscillations. Here we perform a series of experiments to examine evidence for the intrinsic character of bulk quantum oscillations in floating zone-grown single crystals of SmB6 that have been the subject of our quantum oscillation studies. We present results of thermodynamic, transport, and composition analysis experiments on pristine floating zone-grown single crystals of SmB6 and compare quantum oscillations with metallic LaB6 and elemental aluminum. These results establish the intrinsic origin of quantum oscillations from the insulating bulk of floating zone-grown SmB6. The similarity of the Fermi surface in insulating SmB6 with the conduction-electron Fermi surface in metallic hexaborides is at the heart of a theoretical mystery.
| Item Type: | Journal Article | |||||||||||||||||||||||||||||||||
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| Subjects: | Q Science > QC Physics Q Science > QD Chemistry |
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| Divisions: | Faculty of Science > Physics | |||||||||||||||||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Quantum theory , Oscillations, Fermi surfaces , Samarium | |||||||||||||||||||||||||||||||||
| Journal or Publication Title: | iScience | |||||||||||||||||||||||||||||||||
| Publisher: | Cell Press | |||||||||||||||||||||||||||||||||
| ISSN: | 2589-0042 | |||||||||||||||||||||||||||||||||
| Official Date: | 20 November 2020 | |||||||||||||||||||||||||||||||||
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| Volume: | 23 | |||||||||||||||||||||||||||||||||
| Number: | 11 | |||||||||||||||||||||||||||||||||
| Article Number: | 101632 | |||||||||||||||||||||||||||||||||
| DOI: | 10.1016/j.isci.2020.101632 | |||||||||||||||||||||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||||||||||||||||||||
| Publication Status: | Published | |||||||||||||||||||||||||||||||||
| Access rights to Published version: | Open Access | |||||||||||||||||||||||||||||||||
| Funder: | EPSRC | |||||||||||||||||||||||||||||||||
| Grant number: | EP/T005963/1 | |||||||||||||||||||||||||||||||||
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