Microwave analysis of the interplay between magnetism and superconductivity in EuFe2(As1−xPx)2 single crystals
G. Ghigo, D. Torsello, L. Gozzelino, T. Tamegai, I. S. Veshchunov, S. Pyon, W. Jiao, G.-H. Cao, S. Yu. Grebenchuk, I. A. Golovchanskiy, V. S. Stolyarov, D. Roditchev
DOI 10.1103/PhysRevResearch.1.033110 · Physical Review Research
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 report on the microwave analysis of the interplay between magnetism and superconductivity in single crystals of EuFe2(As1−xPx)2, accomplished by means of a coplanar waveguide resonator technique. The bulk complex magnetic susceptibility χm extracted through a cavity perturbation approach is demonstrated to be highly sensitive to the magnetic structure and dynamics, revealing two distinct magnetic transitions below the superconducting critical temperature. By a comparison with magnetic force microscopy maps, we ascribe the χm′′ peak observed at about 17 K to the transition from the ferromagnetic domain Meissner phase to the domain vortex-antivortex state, with the subsequent evolution of the domain structure at lower temperatures. The second χm′′ peak observed at 11 K reflects a specific high-frequency feature, connected to vortex-antivortex dynamics and eventual spin reorientation transition of the Eu2+ canted ferromagnetic subsystem. The two peaks merge and vanish upon application of an in-plane magnetic field, which is compatible with the presence of a quantum critical point below 1 T.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| EuFe2(As1-xPx)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 24.1 | Pressure not reported | onset |
| EuFe2(As1-xPx)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 22.3 | Pressure not reported | onset |
| BaFe2(As1-xPx)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 29 | Pressure not reported | onset |
Similar papers
Interplay of antiferromagnetism, ferromagnetism, and superconductivity in EuFe2(As1−xPx)2 single crystals
similarity 0.98H. S. Jeevan et al.
Source status unknown — claims are unverified
Effect of proton irradiation on superconductivity in optimally doped BaFe2(As1−xPx)2 single crystals
similarity 0.97M. P. Smylie et al.
Source status unknown — claims are unverified
Crossover from ferromagnetic superconductor to superconducting ferromagnet in P-doped EuFe2(As1−xPx)2
similarity 0.96S. Yu. Grebenchuk et al.
Source status unknown — claims are unverified
Magnetic structure of the Eu2+ moments in superconducting EuFe2(As1−xPx)2 with x=0.19
similarity 0.96S. Nandi et al.
Source status unknown — claims are unverified
Unconventional multiband superconductivity with nodes in single-crystalline SrFe2(As0.65P0.35)2 as seen via 31P NMR and specific heat
similarity 0.96T. Dulguun et al.
Source status unknown — claims are unverified
Role of magnetism in superconductivity of BaFe2As2: Study of 5d Au-doped crystals
similarity 0.95Li Li et al.
Source status unknown — claims are unverified