2019/11/11 by S. Holenstein, B. Fischer, Holenstein, S. +34 · 1 citation
Materials Science · Physics and Astronomy · #Ambient pressure #Condensed matter physics #FOS: Physical sciences #Hydrostatic pressure #Iron-based superconductors research #Magnetic field #Magnetic moment #Magnetization #Muon #Muon spin spectroscopy #Nuclear physics #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Rare-earth and actinide compounds #Rotation (mathematics) #Spin (aerodynamics) #Superconductivity #Superconductivity (cond-mat.supr-con) #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.1911.04325
arxiv created 2019/11/11 · openalex publication_date 2019/11/11 · arxiv updated 2019/11/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report muon spin rotation and magnetization measurements on the magnetic superconductor RbEuFe4As4 under hydrostatic pressures up to 3.8 GPa. At ambient pressure, RbEuFe4As4 exhibits a superconducting transition at Tc ≈ 36.5 K and a magnetic transition at Tm ≈ 15 K below which the magnetic and the superconducting order coexist. With increasing pressure, Tc decreases while Tm and the ordered Eu magnetic moment increase. In contrast to iron-based superconductors with ordering Fe moments, the size of the ordered Eu moment is not proportional to Tm. The muon spin rotation signal is dominated by the magnetic response impeding the determination of the superconducting properties.