Novel magnetic stoichiometric superconductor compound EuRbFe4As4

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Kim T., Pervakov K., Vlasenko V., Sadakov A., Usol'Tsev A., Evtushinsky D., ...daha çox

Physics-Uspekhi, vol.65, no.7, pp.740-747, 2022 (SCI-Expanded, Scopus) identifier

  • Nəşrin Növü: Article / Article
  • Cild: 65 Say: 7
  • Nəşr tarixi: 2022
  • Doi nömrəsi: 10.3367/ufne.2021.05.039018
  • jurnalın adı: Physics-Uspekhi
  • Jurnalın baxıldığı indekslər: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, zbMATH, Civil Engineering Abstracts
  • Səhifə sayı: pp.740-747
  • Açar sözlər: coexistence of supercon-ductivity and magnetism, iron-based superconductors
  • Açıq Arxiv Kolleksiyası: Məqalə
  • Adres: Bəli

Qısa məlumat

In the new stoichiometric high-temperature iron-based superconductor RbEuFe4As4, superconductivity coexists with a peculiar long-range magnetic order of the Eu 4f states; their coexistence is an enigma and a challenge for both experi-ment and theory. Using angle-resolved photoemission spectro-scopy (ARPES), resonant photoemission spectroscopy (ResPES), Andreev reflection spectroscopy, scanning tunnel-ing 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 de-monstrate the existence of superconducting and long-range magnetic orders almost independently of each other.