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Uspekhi Fizicheskikh Nauk, 2022, Volume 192, Number 7, Pages 790–798
DOI: https://doi.org/10.3367/UFNr.2021.05.039018 (Mi ufn7322) 		 
This article is cited in 5 scientific papers (total in 5 papers)

CONFERENCES AND SYMPOSIA

Novel magnetic stoichiometric superconductor compound EuRbFe$_4$As$_4$

T. K. Kima, K. S. Pervakovb, V. A. Vlasenkob, A. V. Sadakovb, A. S. Usol'tsevb, D. V. Evtushinskyc, S. Junga, G. Poelchende, K. Kummere, D. Roditchevfgh, V. S Stolyarovhij, I. A. Golovchanskiyhji, D. V. Vyalikhkl, V. Borisovm, R. Valentim, A. Ernstno, S. V. Eremeevp, E. V. Chulkovkqr, V. M. Pudalovbs

a Diamond Light Source Ltd, Didcot
b Lebedev Physical Institute of the Russian Academy of Sciences, Moscow
c Laboratory for Quantum Magnetism, Institute of Physics, École Polytechnique Fédérale de Lausanne
d Institut für Festkörperphysik und Materialphysik, Technische Universität Dresden
e European Synchrotron Radiation Facility, Grenoble
f LPEM, ESPCI Paris, PSL Research University, CNRS, 75005 Paris, France
g Sorbonne University, Paris
h Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Moscow Region
i National University of Science and Technology MISIS, Moscow
j Dukhov Research Institute of Automatics, Moscow
k Donostia International Physics Center
l IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
m Institut für Theoretische Physik, Goethe-Universität Frankfurt
n Institut für Theoretische Physik, Johannes Kepler Universität , Linz
o Max-Planck-Institut für Mikrostrukturphysik, Halle
p Institute of Strength Physics and Materials Science, Siberian Branch of the Russian Academy of Sciences
q St. Petersburg State University
r Departamento de Fizica de Materiales UPV/EHU and Centro de Fizica de Materiales (CFM-MPC), Cento Mixto CSIC-UPV/EHU, San Sebastian, Basque Country
s National Research University Higher School of Economics, Moscow
Full-text PDF (893 kB) Citations (5)
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DOI: https://doi.org/10.3367/UFNr.2021.05.039018
Abstract: In the new stoichiometric high-temperature iron-based superconductor EuRbFe$_4$As$_4$, superconductivity coexists with a peculiar long-range magnetic order of the Eu 4f states; their coexistence is an enigma and a challenge for both experiment and theory. Using angle-resolved photoemission spectroscopy (ARPES), resonant photoemission spectroscopy (ResPES), Andreev reflection spectroscopy, scanning tunneling spectroscopy, and DFT band structure calculations, we have made significant progress in solving this puzzle. Our results unambiguously indicate a separation between the electronic states of Fe (superconductivity) and Eu (magnetism) and demonstrate the existence of superconducting and long-range magnetic orders almost independently of each other.
Funding agency Grant number
Russian Science Foundation 21-12-00394
18-72-10118
Ministry of Science and Higher Education of the Russian Federation 0023-2019-0005
FWRW-2019-0032
The authors are grateful for financial support within the framework of the State Assignment (Physics of High-Temperature Superconductors and New Quantum Materials, project no. 0023-2019-0005) and within the framework of the State Assignment of the Institute of Strength Physics and Materials Science of the Siberian Branch of the RAS (project FWRW-2022-0001). The authors are grateful to the Russian Science Foundation (projects no. 21-12-00394, 18-72-10118).
Received: May 12, 2021
Accepted: May 12, 2021
English version:
Physics–Uspekhi, 2022, Volume 65, Issue 7, Pages 740–747
DOI: https://doi.org/10.3367/UFNe.2021.05.039018
Bibliographic databases:
Document Type: Article
PACS: 74.25.-q, 74.25.Ha, 74.70.-b
Language: Russian
Citation: T. K. Kim, K. S. Pervakov, V. A. Vlasenko, A. V. Sadakov, A. S. Usol'tsev, D. V. Evtushinsky, S. Jung, G. Poelchen, K. Kummer, D. Roditchev, V. S Stolyarov, I. A. Golovchanskiy, D. V. Vyalikh, V. Borisov, R. Valenti, A. Ernst, S. V. Eremeev, E. V. Chulkov, V. M. Pudalov, “Novel magnetic stoichiometric superconductor compound EuRbFe$_4$As$_4$”, UFN, 192:7 (2022), 790–798; Phys. Usp., 65:7 (2022), 740–747
Citation in format AMSBIB
\Bibitem{KimPerVla22}
\by T.~K.~Kim, K.~S.~Pervakov, V.~A.~Vlasenko, A.~V.~Sadakov, A.~S.~Usol'tsev, D.~V.~Evtushinsky, S.~Jung, G.~Poelchen, K.~Kummer, D.~Roditchev, V.~S~Stolyarov, I.~A.~Golovchanskiy, D.~V.~Vyalikh, V.~Borisov, R.~Valenti, A.~Ernst, S.~V.~Eremeev, E.~V.~Chulkov, V.~M.~Pudalov
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