1. Novel magnetic stoichiometric superconductor compound EuRbFe4As4
- Author
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Arthur Ernst, V. A. Vlasenko, A. V. Sadakov, K. S. Pervakov, Igor A. Golovchanskiy, Daniil Evtushinsky, Eugene V. Chulkov, Sergey V. Eremeev, A. S. Usoltsev, Vasily S. Stolyarov, G. Poelchen, Kurt Kummer, Sungwon Jung, D.V. Vyalikh, Dimitri Roditchev, Vladislav Borisov, Timur K. Kim, Roser Valentí, and V. M. Pudalov
- Subjects
Superconductivity ,Range (particle radiation) ,Materials science ,Condensed matter physics ,Magnetic order ,Photoemission spectroscopy ,Condensed Matter::Superconductivity ,Scanning tunneling spectroscopy ,General Physics and Astronomy ,Spectroscopy ,Stoichiometry ,Andreev reflection - Abstract
In the novel stoichiometric iron-based material RbEuFe4As4 superconductivity coexists with a peculiar long-range magnetic order of Eu 4f states; their coexistance is puzzling and represents a challenge for both experiment and theory. Using angle-resolved photoemission spectroscopy, resonant photoemission spectroscopy, Andreev reflection spectroscopy and scanning tunneling spectroscopy we have addressed this puzzle and unambigously shown that Fe- and Eu-derived states are largely decoupled and that superconducting and a long range magnetic orders exist almost independently from each other.
- Published
- 2021
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