Muon spin rotation measurements on RbEuFe${}_4$As${}_4$ under pressure

Abstract

We report muon spin rotation and magnetization measurements on the magnetic superconductor RbEuFe${}_4$As${}_4$ under hydrostatic pressures up to 3.8 GPa. At ambient pressure, RbEuFe${}_4$As${}_4$ exhibits a superconducting transition at $T_c\approx$ 36.5 K and a magnetic transition at $T_m\approx$ 15 K below which the magnetic and the superconducting order coexist. With increasing pressure, $T_c$ decreases while $T_m$ 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 $T_m$. The muon spin rotation signal is dominated by the magnetic response impeding the determination of the superconducting properties.

References in corpus (5)

• Superconductivity induced by phosphorus doping and its coexistence with ferromagnetism in EuFe${}_2$(As${}_{0.7}$P${}_{0.3}$)${}_2$
• Antiferromagnetic transition in EuFe${}_2$As${}_2$: A possible parent compound for superconductors
• RbEu(Fe${}_{1-x}$Ni${}_x$)${}_4$As${}_4$: From a ferromagnetic superconductor to a superconducting ferromagnet
• Charge and nematic orders in AFe${}_2$As${}_2$ (A= Rb,Cs) superconductors
• Self-induced Magnetic Flux Structure in the Magnetic Superconductor RbEuFe${}_4$As${}_4$

Cited by in corpus (1)

• In-situ local imaging of ferromagnetism and superconductivity in RbEuFe${}_4$As${}_4$