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Fermi surfaces in Kondo insulators
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Liu, Hsu, Hartstein, Máté, Wallace, Gregory J, Davies, Alexander J, Ciomaga Hatnean, Monica, Johannes, Michelle D, Shitsevalova, Natalya, Balakrishnan, Geetha and Sebastian, Suchitra E (2018) Fermi surfaces in Kondo insulators. Journal of Physics: Condensed Matter, 30 (16). 16LT01. doi:10.1088/1361-648X/aaa522
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WRAP-Femi-surfaces-in-Kondo-insulators-Balakrishnan-2018.pdf - Accepted Version - Requires a PDF viewer. Download (2302Kb) | Preview |
Official URL: http://dx.doi.org/10.1088/1361-648X/aaa522
Abstract
We report magnetic quantum oscillations measured using torque magnetisation in the Kondo insulator YbB12 and discuss the potential origin of the underlying Fermi surface. Observed quantum oscillations as well as complementary quantities such as a finite linear specific heat capacity in YbB12 exhibit similarities with the Kondo insulator SmB6, yet also crucial differences. Small heavy Fermi sections are observed in YbB12 with similarities to the neighbouring heavy fermion semimetallic Fermi surface, in contrast to large light Fermi surface sections in SmB6 which are more similar to the conduction electron Fermi surface. A rich spectrum of theoretical models is suggested to explain the origin across different Kondo insulating families of a bulk Fermi surface potentially from novel itinerant quasiparticles that couple to magnetic fields, yet do not couple to weak DC electric fields.
| Item Type: | Journal Article | |||||||||||||||||||||||||||
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| Subjects: | Q Science > QC Physics | |||||||||||||||||||||||||||
| Divisions: | Faculty of Science > Physics | |||||||||||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Fermi surfaces, Kondo effect, Ytterbium, Electric insulators and insulation, Metals -- Magnetic properties | |||||||||||||||||||||||||||
| Journal or Publication Title: | Journal of Physics: Condensed Matter | |||||||||||||||||||||||||||
| Publisher: | Institute of Physics Publishing | |||||||||||||||||||||||||||
| ISSN: | 0953-8984 | |||||||||||||||||||||||||||
| Official Date: | 25 April 2018 | |||||||||||||||||||||||||||
| Dates: |
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| Date of first compliant deposit: | 1 May 2018 | |||||||||||||||||||||||||||
| Volume: | 30 | |||||||||||||||||||||||||||
| Number: | 16 | |||||||||||||||||||||||||||
| Article Number: | 16LT01 | |||||||||||||||||||||||||||
| DOI: | 10.1088/1361-648X/aaa522 | |||||||||||||||||||||||||||
| Status: | Peer Reviewed | |||||||||||||||||||||||||||
| Publication Status: | Published | |||||||||||||||||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||||||||||||||||||||
| Copyright Holders: | Institute of Physics Publishing | |||||||||||||||||||||||||||
| RIOXX Funder/Project Grant: |
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