Nematic Correlation Length in Iron-Based Superconductors Probed by Inelastic X-Ray Scattering

A. M. Merritt; F. Weber; J. P. Castellan; Th Wolf; D. Ishikawa; A. H. Said; A. Alatas; R. M. Fernandes; A. Q.R. Baron; D. Reznik

doi:10.1103/PhysRevLett.124.157001

Nematic Correlation Length in Iron-Based Superconductors Probed by Inelastic X-Ray Scattering

A. M. Merritt, F. Weber, J. P. Castellan, Th Wolf, D. Ishikawa, A. H. Said, A. Alatas, R. M. Fernandes, A. Q.R. Baron, D. Reznik

Physics and Astronomy (Twin Cities)

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Nematicity is ubiquitous in electronic phases of high-Tc superconductors, particularly in the Fe-based systems. We used inelastic x-ray scattering to extract the temperature-dependent nematic correlation length ζ from the anomalous softening of acoustic phonon modes in FeSe, underdoped Ba(Fe0.97Co0.03)2As2, and optimally doped Ba(Fe0.94Co0.06)2As2. In all cases, we find that ζ is well described by a power law (T-T0)-1/2 extending over a wide temperature range. Combined with the previously reported Curie-Weiss behavior of the nematic susceptibility, these results point to the mean-field character of the nematic transition, which we attribute to a sizable nematoelastic coupling that is likely detrimental to superconductivity.

Original language	English (US)
Article number	157001
Journal	Physical review letters
Volume	124
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.124.157001
State	Published - Apr 17 2020

Bibliographical note

Funding Information:
D. R. would like to thank I. I. Mazin for helpful discussions. A. M. M. and D. R. were supported by the U.S. Department of Energy (DOE), Office of Basic Energy Sciences, Office of Science, under Contract No. DE-SC0006939. Theory work (RMF) was supported by the DOE Office of Science, Basic Energy Sciences, under Award No. DE-SC0020045. This research used resources of the Advanced Photon Source (APS), a DOE Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. Experimental work was carried out at BL43LXU of the RIKEN SPring-8 Center and at Sector 30 (HERIX) of the APS.

Funding Information:
D.R. would like to thank I.I. Mazin for helpful discussions. A.M.M. and D.R. were supported by the U.S. Department of Energy (DOE), Office of Basic Energy Sciences, Office of Science, under Contract No. DE-SC0006939. Theory work (RMF) was supported by the DOE Office of Science, Basic Energy Sciences, under Award No. DE-SC0020045. This research used resources of the Advanced Photon Source (APS), a DOE Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. Experimental work was carried out at BL43LXU of the RIKEN SPring-8 Center and at Sector 30 (HERIX) of the APS.

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© 2020 American Physical Society. © 2020 American Physical Society.

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@article{50dec268eec64ab59608b211677623ff,

title = "Nematic Correlation Length in Iron-Based Superconductors Probed by Inelastic X-Ray Scattering",

abstract = "Nematicity is ubiquitous in electronic phases of high-Tc superconductors, particularly in the Fe-based systems. We used inelastic x-ray scattering to extract the temperature-dependent nematic correlation length ζ from the anomalous softening of acoustic phonon modes in FeSe, underdoped Ba(Fe0.97Co0.03)2As2, and optimally doped Ba(Fe0.94Co0.06)2As2. In all cases, we find that ζ is well described by a power law (T-T0)-1/2 extending over a wide temperature range. Combined with the previously reported Curie-Weiss behavior of the nematic susceptibility, these results point to the mean-field character of the nematic transition, which we attribute to a sizable nematoelastic coupling that is likely detrimental to superconductivity.",

author = "Merritt, {A. M.} and F. Weber and Castellan, {J. P.} and Th Wolf and D. Ishikawa and Said, {A. H.} and A. Alatas and Fernandes, {R. M.} and Baron, {A. Q.R.} and D. Reznik",

note = "Funding Information: D. R. would like to thank I. I. Mazin for helpful discussions. A. M. M. and D. R. were supported by the U.S. Department of Energy (DOE), Office of Basic Energy Sciences, Office of Science, under Contract No. DE-SC0006939. Theory work (RMF) was supported by the DOE Office of Science, Basic Energy Sciences, under Award No. DE-SC0020045. This research used resources of the Advanced Photon Source (APS), a DOE Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. Experimental work was carried out at BL43LXU of the RIKEN SPring-8 Center and at Sector 30 (HERIX) of the APS. Funding Information: D.R. would like to thank I.I. Mazin for helpful discussions. A.M.M. and D.R. were supported by the U.S. Department of Energy (DOE), Office of Basic Energy Sciences, Office of Science, under Contract No. DE-SC0006939. Theory work (RMF) was supported by the DOE Office of Science, Basic Energy Sciences, under Award No. DE-SC0020045. This research used resources of the Advanced Photon Source (APS), a DOE Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. Experimental work was carried out at BL43LXU of the RIKEN SPring-8 Center and at Sector 30 (HERIX) of the APS. Publisher Copyright: {\textcopyright} 2020 American Physical Society. {\textcopyright} 2020 American Physical Society.",

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AU - Castellan, J. P.

AU - Wolf, Th

AU - Ishikawa, D.

AU - Said, A. H.

AU - Alatas, A.

AU - Fernandes, R. M.

AU - Baron, A. Q.R.

AU - Reznik, D.

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PY - 2020/4/17

Y1 - 2020/4/17

N2 - Nematicity is ubiquitous in electronic phases of high-Tc superconductors, particularly in the Fe-based systems. We used inelastic x-ray scattering to extract the temperature-dependent nematic correlation length ζ from the anomalous softening of acoustic phonon modes in FeSe, underdoped Ba(Fe0.97Co0.03)2As2, and optimally doped Ba(Fe0.94Co0.06)2As2. In all cases, we find that ζ is well described by a power law (T-T0)-1/2 extending over a wide temperature range. Combined with the previously reported Curie-Weiss behavior of the nematic susceptibility, these results point to the mean-field character of the nematic transition, which we attribute to a sizable nematoelastic coupling that is likely detrimental to superconductivity.

AB - Nematicity is ubiquitous in electronic phases of high-Tc superconductors, particularly in the Fe-based systems. We used inelastic x-ray scattering to extract the temperature-dependent nematic correlation length ζ from the anomalous softening of acoustic phonon modes in FeSe, underdoped Ba(Fe0.97Co0.03)2As2, and optimally doped Ba(Fe0.94Co0.06)2As2. In all cases, we find that ζ is well described by a power law (T-T0)-1/2 extending over a wide temperature range. Combined with the previously reported Curie-Weiss behavior of the nematic susceptibility, these results point to the mean-field character of the nematic transition, which we attribute to a sizable nematoelastic coupling that is likely detrimental to superconductivity.

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ER -

Nematic Correlation Length in Iron-Based Superconductors Probed by Inelastic X-Ray Scattering

Abstract

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