Microscopic coexistence of antiferromagnetic order and superconductivity in Ba0.77K0.23Fe2As2
Z. Li, R. Zhou, Y. Liu, D. L. Sun, J. Yang, C. T. Lin, Guo-qing Zheng
DOI 10.1103/PhysRevB.86.180501 · 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 report 75As nuclear magnetic resonance studies on an underdoped single-crystal Ba0.77K0.23Fe2As2 with Tc=16.5 K. Below TN=46 K, the NMR peaks for H∥c split and those for H∥a shift to higher frequencies, which indicates that an internal magnetic field along the c axis develops below TN. The spin-lattice relaxation rate 1/T1 measured at the shifted peak with H∥a, which experiences the internal field, shows a distinct decrease below Tc(μ0H=12T)=16 K, following a T3 relation at low temperatures. Our results show unambiguously that antiferromagnetic order and superconductivity coexist microscopically. The unusual superconducting state with the coexisting magnetism is highlighted.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ba0.77K0.23Fe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 16.5 | Pressure not reported | unknown |
| Ba0.77K0.23Fe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 16 | Pressure not reported | unknown |
| Ba0.68K0.32Fe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 38.5 | Pressure not reported | unknown |
| Ba1-xKxFe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 24.5 | Pressure not reported | unknown |
Similar papers
Microscopic Coexistence of Superconductivity and Magnetism in Ba1−xKxFe2As2
similarity 0.96Erwin Wiesenmayer et al.
Source status unknown — claims are unverified
Comparative study of upper critical field Hc2 and second magnetization peak Hsp in hole- and electron-doped BaFe2As2 superconductor
similarity 0.96D. L. Sun et al.
Source status unknown — claims are unverified
Competition between superconductivity and magnetic/nematic order as a source of anisotropic superconducting gap in underdoped Ba1−xKxFe2As2
similarity 0.96H. Kim et al.
Source status unknown — claims are unverified
Upper critical field, anisotropy, and superconducting properties of Ba1−xKxFe2As2 single crystals
similarity 0.96Zhao-Sheng Wang et al.
Source status unknown — claims are unverified
Superconducting fluctuations in the reversible magnetization of the iron-pnictide Ba1−xKxFe2As2
similarity 0.96S. Salem-Sugui, Jr. et al.
Source status unknown — claims are unverified
Magnetic anisotropy in hole-doped superconducting Ba0.67K0.33Fe2As2 probed by polarized inelastic neutron scattering
similarity 0.96Chenglin Zhang et al.
Source status unknown — claims are unverified