Suppression of electronic correlations by chemical pressure from FeSe to FeS (ARPES_FeSeS 2017)

Name: Suppression of electronic correlations by chemical pressure from FeSe to FeS (ARPES_FeSeS 2017)
Published: 2017-01-01T00:00:00Z
License: https://ora.ox.ac.uk/terms_of_use

Coldea, A; Reiss, P

Documentation:: ARPES data were created at the Diamod Light Source and transport data were collected in Oxford. These data are part of the publication with the same title to appear in Phys Rev B, Rapid Communication 2017.

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APA Style

Coldea, A., & Reiss, P. (2017). Suppression of electronic correlations by chemical pressure from FeSe to FeS (ARPES_FeSeS 2017). University of Oxford.

MLA Style

Coldea, A., and P. Reiss. Suppression of Electronic Correlations by Chemical Pressure from FeSe to FeS (ARPES_FeSeS 2017). University of Oxford, 2017.

Chicago Style

Coldea, A, and P Reiss. 2017. “Suppression of Electronic Correlations by Chemical Pressure from FeSe to FeS (ARPES_FeSeS 2017).” University of Oxford.
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Files:: FeSeS_ARPES_2017_open_access.zip

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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, Contributor, Creator
ORCID:: 0000-0002-6732-5964

+ Reiss, P More by this author/creator

Institution:: University of Oxford
Division:: MPLS
Department:: Physics
Sub department:: Condensed Matter Physics
Role:: Contributor, Creator, Data collector, Researcher

+ Engineering and Physical Sciences Research Council More from this funder

Funder identifier:: https://ror.org/0439y7842
Funding agency for:: Coldea, A; Reiss, P
Grant:: EP/I004475/1; EP/I004475/1; EP/I004475/1; EP/I017836/1

Publisher:: University of Oxford
Publication date:: 2017
DOI:: 10.5287/bodleian:9oJ1gG54B

Language:: English
Pubs id:: 1480865
UUID:: uuid:6423d3c7-d4a4-443f-9fbc-b2ff254863bc
Local pid:: pubs:1480865
Deposit date:: 2017-08-25

Related item:: Suppression of electronic correlations by chemical pressure from FeSe to FeS
Description:: Iron-based chalcogenides are complex superconducting systems in which orbitally dependent electronic correlations play an important role. Here, using high-resolution angle-resolved photoemission spectroscopy, we investigate the effect of these electronic correlations outside the nematic phase in the tetragonal phase of superconducting FeSe1−xSx (x = 0,0.18,1). With increasing sulfur substitution, the Fermi velocities increase significantly and the band renormalizations are suppressed towards a factor of 1.5–2 for FeS. Furthermore, the chemical pressure leads to an increase in the size of the quasi-two-dimensional Fermi surface, compared with that of FeSe, however, it remains smaller than the predicted one from first-principles calculations for FeS. Our results show that the isoelectronic substitution is an effective way to tune electronic correlations in FeSe1−xSx, being weakened for FeS with a lower superconducting transition temperature. This suggests indirectly that electronic correlations could help to promote higher-Tc superconductivity in FeSe.
Related item:: Suppression of electronic correlations by chemical pressure from FeSe to FeS
Description:: Iron-based chalcogenides are complex superconducting systems in which orbitally-dependent electronic correlations play an important role. Here, using high-resolution angle-resolved photoemission spectroscopy, we investigate the effect of these electronic correlations outside the nematic phase in the tetragonal phase of superconducting FeSe1-xSx (x = 0; 0:18; 1). With increasing sulfur substitution, the Fermi velocities increase significantly and the band renormalizations are suppressed towards a factor of 1.5-2 for FeS. Furthermore, the chemical pressure leads to an increase in the size of the quasi-two dimensional Fermi surface, compared with that of FeSe, however, it remains smaller than the predicted one from first principle calculations for FeS. Our results show that the isoelectronic substitution is an effective way to tune electronic correlations in FeSe1-xSx, being weakened for FeS with a lower superconducting transition temperature. This suggests indirectly that electronic correlations could help to promote higher-Tc superconductivity in FeSe.

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