Quantum oscillations in the nematic superconductors FeSe1-xSx

Name: Quantum oscillations in the nematic superconductors FeSe1-xSx
Published: 2018-01-01T00:00:00Z
License: https://ora.ox.ac.uk/terms_of_use

Coldea, A

Documentation:: These are the Raw data used to generate the figures related to the publication: "Evolution of the Fermi surface of the nematic superconductors FeSe1-xSx" by A. I. Coldea et al.

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APA Style

Coldea, A. (2018). Quantum oscillations in the nematic superconductors FeSe1-xSx. University of Oxford.

MLA Style

Coldea, A. Quantum Oscillations in the Nematic Superconductors FeSe1-XSx. University of Oxford, 2018.

Chicago Style

Coldea, A. 2018. Quantum Oscillations in the Nematic Superconductors FeSe1-XSx. University of Oxford.
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Files:: FeSeS_open_access.zip

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FigureSM6.pdf

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Authors/Creators

+ Coldea, A More by this author/creator

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Condensed Matter Physics
Role:: Principal Investigator (PI), Data collector, Data manager, Researcher, Creator
ORCID:: 0000-0002-6732-5964

+ Engineering and Physical Sciences Research Council More from this funder

Funding agency for:: Coldea, A
Grant:: EP/I004475/1; EP/I004475/1; EP/L001772/1; EP/I017836/1

Publisher:: University of Oxford
Publication date:: 2018
DOI:: 10.5287/bodleian:wxAGnOgv6

Pubs id:: 1481077
UUID:: uuid:dad66609-f461-4f7d-9373-190e309a2ed9
Local pid:: pubs:1481077
Deposit date:: 2018-11-23
ARK identifier:: ark:/29072/ora_dad66609f4614f7d9373190e309a2ed9

Related item:: Evolution of the low-temperature Fermi surface of superconducting FeSe1−xSx across a nematic phase transition
Description:: The existence of a nematic phase transition in iron-chalcogenide superconductors poses an intriguing question about its impact on superconductivity. To understand the nature of this unique quantum phase transition, it is essential to study how the electronic structure changes across this transition at low temperatures. Here, we investigate the evolution of the Fermi surfaces and electronic interactions across the nematic phase transition of FeSe1−xSx using Shubnikov-de Haas oscillations in high magnetic fields up to 45 T in the low temperature regime down to 0.4 K. Most of the Fermi surfaces of FeSe1−xSx monotonically increase in size except for a prominent low frequency oscillation associated with a small, but highly mobile band, which disappears at the nematic phase boundary near x ~ 0.17, indicative of a topological Lifshitz transition. The quasiparticle masses are larger inside the nematic phase, indicative of a strongly correlated state, but they become suppressed outside it. The experimentally observed changes in the Fermi surface topology, together with the varying degree of electronic correlations, will change the balance of electronic interactions in the multi-band system FeSe1−xSx and promote different kz-dependent superconducting pairing channels inside and outside the nematic phase.

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Quantum oscillations in the nematic superconductors FeSe1-xSx

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