Suppression of the antiferromagnetic order when approaching the superconducting state in a phase-separated crystal of KxFe2−ySe2
Shichao Li, Yuan Gan, Jinghui Wang, Ruidan Zhong, J. A. Schneeloch, Zhijun Xu, Wei Tian, M. B. Stone, Songxue Chi, M. Matsuda, Y. Sidis, Ph. Bourges, Qiang Li, Genda Gu, J. M. Tranquada, Guangyong Xu, R. J. Birgeneau, Jinsheng Wen
DOI 10.1103/PhysRevB.96.094503 · 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 have combined elastic and inelastic neutron scattering techniques, magnetic susceptibility, and resistivity measurements to study single-crystal samples of KxFe2−ySe2, which contain the superconducting phase that has a transition temperature of ∼31 K. In the inelastic neutron scattering measurements, we observe both the spin-wave excitations resulting from the block antiferromagnetic ordered phase and the resonance that is associated with the superconductivity in the superconducting phase, demonstrating the coexistence of these two orders. From the temperature dependence of the intensity of the magnetic Bragg peaks, we find that well before entering the superconducting state, the development of the magnetic order is interrupted, at ∼42 K. We consider this result to be evidence for the physical separation of the antiferromagnetic and superconducting phases; the suppression is possibly due to the proximity effect of the superconducting fluctuations on the antiferromagnetic order.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| KxFe2-ySe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 31 | Pressure not reported | onset |
| KxFe2-ySe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 32 | Pressure not reported | zero_resistance |
| KxFe2-ySe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 31 | Pressure not reported | onset |
Similar papers
Direct observation of nanoscale interface phase in the superconducting chalcogenide KxFe2−ySe2 with intrinsic phase separation
similarity 0.97A. Ricci et al.
Source status unknown — claims are unverified
Electronic Identification of the Parental Phases and Mesoscopic Phase Separation of KxFe2−ySe2 Superconductors
similarity 0.97F. Chen et al.
Source status unknown — claims are unverified
Intermittent dynamics of antiferromagnetic phase in inhomogeneous iron-based chalcogenide superconductor
similarity 0.97A. Ricci et al.
Source status unknown — claims are unverified
Phase relations in KxFe2−ySe2 and the structure of superconducting KxFe2Se2 via high-resolution synchrotron diffraction
similarity 0.96Daniel P. Shoemaker et al.
Source status unknown — claims are unverified
Phase Diagram of KxFe2−ySe2−zSz and the Suppression of its Superconducting State by an Fe2−Se/S Tetrahedron Distortion
similarity 0.96Hechang Lei (雷和畅) et al.
Source status unknown — claims are unverified
Coexistence of superconductivity and magnetism in KxFe2−ySe2−zSz (z = 0,0.4)
similarity 0.96L. Li et al.
Source status unknown — claims are unverified