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  Topological magnetic order and superconductivity in EuRbFe4As4

Hemmida, M., Winterhalter-Stocker, N., Ehlers, D., Von Nidda, H.-A., Yao, M., Bannies, J., et al. (2021). Topological magnetic order and superconductivity in EuRbFe4As4. Physical Review B, 103(19): 195112, pp. 1-13. doi:10.1103/PhysRevB.103.195112.

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Hemmida, M.1, Author
Winterhalter-Stocker, N.1, Author
Ehlers, D.1, Author
Von Nidda, H.-A.K.1, Author
Yao, M.1, Author
Bannies, J.2, Author              
Rienks, E.D.L.1, Author
Kurleto, R.1, Author
Felser, C.3, Author              
Büchner, B.1, Author
Fink, J.2, Author              
Gorol, S.1, Author
Förster, T.1, Author
Arsenijevic, S.1, Author
Fritsch, V.1, Author
Gegenwart, P.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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Free keywords: Europium compounds, Iron compounds, Iron-based Superconductors, Magnetic fields, Magnetic moments, Photoelectron spectroscopy, Rubidium compounds, Superconducting magnets, Temperature distribution, Topology, Angle resolved photoemission spectroscopy, Electrical resistances, External magnetic field, Magnetic superconductors, Pulsed magnetic fields, Superconducting state, Temperature dependence, Topological transitions, Electron spin resonance spectroscopy
 Abstract: We study single crystals of the magnetic superconductor EuRbFe4As4 by magnetization, electron spin resonance (ESR), angle-resolved photoemission spectroscopy, and electrical resistance in pulsed magnetic fields up to 63 T. The superconducting state below 36.5 K is almost isotropic and is only weakly affected by the development of Eu2+ magnetic order at 15 K. On the other hand, for the external magnetic field applied along the c axis the temperature dependence of the ESR linewidth reveals a Berezinskii-Kosterlitz-Thouless topological transition below 15 K. This indicates that Eu2+ planes are a good realization of a two-dimensional XY magnet, which reflects the decoupling of the Eu2+ magnetic moments from superconducting FeAs layers. © 2021 American Physical Society.

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Language(s): eng - English
 Dates: 2021-05-062021-05-06
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1103/PhysRevB.103.195112
 Degree: -

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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 103 (19) Sequence Number: 195112 Start / End Page: 1 - 13 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008