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
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 - 15 Apr 2021

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10.1103/PhysRevLett.126.157001

PhysRevLett.126.157001
© 2021 American Physical Society 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, and U. Welp Phys. Rev. Lett. 126, 157001 – Published 14 April 2021 https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.126.157001
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https://link.aps.org/doi/10.1103/PhysRevLett.126.157001

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EPSRC Centre for Doctoral Training in Condensed Matter Physics
Bending, S.
1/04/14 → 31/10/22
Project: Research council
Graphene Nanosensors for Scanning Hall Microscopy and Susceptometry
Bending, S., Wolverson, D., Yuan, W. & Li, P.
Engineering and Physical Sciences Research Council
1/01/18 → 30/06/21
Project: Research council

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Observing the Suppression of Superconductivity in RbEuFe4As4 by Correlated Magnetic Fluctuations. / Collomb, D.; Bending, S. J.; Koshelev, A. E.; Smylie, M. P.; Farrar, L.; Bao, J.-K.; Chung, D. Y.; Kanatzidis, M. G.; Kwok, W.-K.; Welp, U.

In: Physical Review Letters, Vol. 126, No. 15, 157001, 15.04.2021.

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

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Observing the Suppression of Superconductivity in RbEuFe4As4 by Correlated Magnetic Fluctuations

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EPSRC Centre for Doctoral Training in Condensed Matter Physics

Graphene Nanosensors for Scanning Hall Microscopy and Susceptometry

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