Observing the Suppression of Superconductivity in RbEuFe4As4 by Correlated Magnetic Fluctuations

D. Collomb; S. J. Bending; A. E. Koshelev; M. P. Smylie; L. Farrar; J.-K. Bao; D. Y. Chung; M. G. Kanatzidis; W.-K. Kwok; U. Welp

doi:10.1103/PhysRevLett.126.157001

Observing the Suppression of Superconductivity in RbEuFe4As4 by Correlated Magnetic Fluctuations

D. Collomb, S. J. Bending, A. E. Koshelev, M. P. Smylie, L. Farrar, J.-K. Bao, D. Y. Chung, M. G. Kanatzidis, W.-K. Kwok, U. Welp

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Abstract

In this Letter, we describe quantitative magnetic imaging of superconducting vortices in RbEuFe4As4 in order to investigate the unique interplay between the magnetic and superconducting sublattices. Our scanning Hall microscopy data reveal a pronounced suppression of the superfluid density near the magnetic ordering temperature in good qualitative agreement with a recently developed model describing the suppression of superconductivity by correlated magnetic fluctuations. These results indicate a pronounced exchange interaction between the superconducting and magnetic subsystems in RbEuFe4As4, with important implications for future investigations of physical phenomena arising from the interplay between them.

Original language	English
Article number	157001
Number of pages	7
Journal	Physical Review Letters
Volume	126
Issue number	15
Early online date	14 Apr 2021
DOIs	https://doi.org/10.1103/PhysRevLett.126.157001
Publication status	Published - 14 Apr 2021

Bibliographical note

Funding Information:
We acknowledge support from the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division for the crystal growth, theoretical modeling, and magnetotransport measurements. Financial support was also provided by the Engineering and Physical Sciences Research Council (EPSRC) in the UK under Grant No. EP/R007160/1 and the Nanocohybri COST Action CA-16218. D. C. acknowledges financial support from the Lloyds Register Foundation ICON (Grant No. G0086) and L. F. from the EPSRC Centre for Doctoral Training in Condensed Matter Physics, Grant No. EP/L015544/1. J.-K. Bao acknowledges the Alexander von Humboldt Foundation for financial support in Germany.

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.126.157001

RbEuFeAs_Vortex_matter_study_FinalAccepted author manuscript, 914 KBLicence: CC BY

Cite this

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title = "Observing the Suppression of Superconductivity in RbEuFe4As4 by Correlated Magnetic Fluctuations",

abstract = "In this Letter, we describe quantitative magnetic imaging of superconducting vortices in RbEuFe4As4 in order to investigate the unique interplay between the magnetic and superconducting sublattices. Our scanning Hall microscopy data reveal a pronounced suppression of the superfluid density near the magnetic ordering temperature in good qualitative agreement with a recently developed model describing the suppression of superconductivity by correlated magnetic fluctuations. These results indicate a pronounced exchange interaction between the superconducting and magnetic subsystems in RbEuFe4As4, with important implications for future investigations of physical phenomena arising from the interplay between them.",

author = "D. Collomb and S. J. Bending and A. E. Koshelev and M. P. Smylie and L. Farrar and J.-K. Bao and D. Y. Chung and M. G. Kanatzidis and W.-K. Kwok and U. Welp",

note = "Funding Information: We acknowledge support from the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division for the crystal growth, theoretical modeling, and magnetotransport measurements. Financial support was also provided by the Engineering and Physical Sciences Research Council (EPSRC) in the UK under Grant No. EP/R007160/1 and the Nanocohybri COST Action CA-16218. D. C. acknowledges financial support from the Lloyds Register Foundation ICON (Grant No. G0086) and L. F. from the EPSRC Centre for Doctoral Training in Condensed Matter Physics, Grant No. EP/L015544/1. J.-K. Bao acknowledges the Alexander von Humboldt Foundation for financial support in Germany. ",

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AU - Collomb, D.

AU - Bending, S. J.

AU - Koshelev, A. E.

AU - Smylie, M. P.

AU - Farrar, L.

AU - Bao, J.-K.

AU - Chung, D. Y.

AU - Kanatzidis, M. G.

AU - Kwok, W.-K.

AU - Welp, U.

N1 - Funding Information: We acknowledge support from the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division for the crystal growth, theoretical modeling, and magnetotransport measurements. Financial support was also provided by the Engineering and Physical Sciences Research Council (EPSRC) in the UK under Grant No. EP/R007160/1 and the Nanocohybri COST Action CA-16218. D. C. acknowledges financial support from the Lloyds Register Foundation ICON (Grant No. G0086) and L. F. from the EPSRC Centre for Doctoral Training in Condensed Matter Physics, Grant No. EP/L015544/1. J.-K. Bao acknowledges the Alexander von Humboldt Foundation for financial support in Germany.

PY - 2021/4/14

Y1 - 2021/4/14

N2 - In this Letter, we describe quantitative magnetic imaging of superconducting vortices in RbEuFe4As4 in order to investigate the unique interplay between the magnetic and superconducting sublattices. Our scanning Hall microscopy data reveal a pronounced suppression of the superfluid density near the magnetic ordering temperature in good qualitative agreement with a recently developed model describing the suppression of superconductivity by correlated magnetic fluctuations. These results indicate a pronounced exchange interaction between the superconducting and magnetic subsystems in RbEuFe4As4, with important implications for future investigations of physical phenomena arising from the interplay between them.

AB - In this Letter, we describe quantitative magnetic imaging of superconducting vortices in RbEuFe4As4 in order to investigate the unique interplay between the magnetic and superconducting sublattices. Our scanning Hall microscopy data reveal a pronounced suppression of the superfluid density near the magnetic ordering temperature in good qualitative agreement with a recently developed model describing the suppression of superconductivity by correlated magnetic fluctuations. These results indicate a pronounced exchange interaction between the superconducting and magnetic subsystems in RbEuFe4As4, with important implications for future investigations of physical phenomena arising from the interplay between them.

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Observing the Suppression of Superconductivity in RbEuFe4As4 by Correlated Magnetic Fluctuations

Abstract

Bibliographical note

ASJC Scopus subject areas

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Graphene Nanosensors for Scanning Hall Microscopy and Susceptometry

EPSRC Centre for Doctoral Training in Condensed Matter Physics

SFM Consortium: Generation, Imaging and Control of Novel Coherent Electronic States

Dataset for "Observing the suppression of superconductivity in RbEuFe4As4 by correlated magnetic fluctuations"

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Observing the Suppression of Superconductivity in RbEuFe4As4 by Correlated Magnetic Fluctuations

Abstract

Bibliographical note

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Projects

Graphene Nanosensors for Scanning Hall Microscopy and Susceptometry

EPSRC Centre for Doctoral Training in Condensed Matter Physics

SFM Consortium: Generation, Imaging and Control of Novel Coherent Electronic States

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