Cooperative response of magnetism and superconductivity in the magnetic superconductor RbEuFe4As4
V. K. Vlasko-Vlasov, U. Welp, A. E. Koshelev, M. Smylie, J.-K. Bao, D. Y. Chung, M. G. Kanatzidis, W.-K. Kwok
DOI 10.1103/PhysRevB.101.104504 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We present a study of the magnetic-flux evolution in the magnetic superconductor RbEuFe4As4 performed using magneto-optical imaging and magnetization measurements during field cooling and warming and magnetic field cycling at temperatures above and below the magnetic transition point, Tm. The vortex patterns emerging at T≲Tm reveal that the Eu-spin subsystem serves as an internal pump of the magnetic flux while the superconducting critical current controls the delivery of magnetic-flux quanta into the bulk. The interplay of magnetic susceptibility amplifying the magnetic induction and vortex pinning attenuating the magnetic-flux entry results in a field- and temperature-dependent critical state that emulates a paramagnetic Meissner effect. The observed vortex dynamics corresponds to a nontrivial spatial current distribution and yields a self-consistent inhomogeneous enhancement of the sample magnetization.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| RbEuFe4As4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 37 | Pressure not reported | onset |
| RbEuFe4As4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 37 | Pressure not reported | onset |
| RbEuFe4As4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 37 | Pressure not reported | onset |
Similar papers
Anisotropic superconductivity and magnetism in single-crystal RbEuFe4As4
similarity 0.96M. P. Smylie et al.
Source status unknown — claims are unverified
Self-induced magnetic flux structure in the magnetic superconductor RbEuFe4As4
similarity 0.96V. K. Vlasko-Vlasov et al.
Source status unknown — claims are unverified
Self-induced Magnetic Flux Structure in the Magnetic Superconductor RbEuFeAs
similarity 0.96V. K. Vlasko-Vlasov et al. · 2019 · arXiv:1902.08125
Source status unknown — claims are unverified
Anisotropic upper critical field of pristine and proton-irradiated single crystals of the magnetically ordered superconductor RbEuFe4As4
similarity 0.96M. P. Smylie et al.
Source status unknown — claims are unverified
Unique interplay between superconducting and ferromagnetic orders in EuRbFe4As4
similarity 0.95V. S. Stolyarov et al.
Source status unknown — claims are unverified
Magnetic and superconducting anisotropy in Ni-doped RbEuFe4As4 single crystals
similarity 0.95K. Willa et al.
Source status unknown — claims are unverified