Detection of Antiferromagnetic Ordering in Heavily Doped LaFeAsO1−xHx Pnictide Superconductors Using Nuclear-Magnetic-Resonance Techniques
N. Fujiwara, S. Tsutsumi, S. Iimura, S. Matsuishi, H. Hosono, Y. Yamakawa, H. Kontani
DOI 10.1103/PhysRevLett.111.097002 · Physical Review Letters
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 studied double superconducting (SC) domes in LaFeAsO1−xHx by using As75 and H1 nuclear-magnetic-resonance techniques and unexpectedly discovered that a new antiferromagnetic (AF) phase follows the double SC domes on further H doping, forming a symmetric alignment of AF and SC phases in the electronic phase diagram. We demonstrated that the new AF ordering originates from the nesting between electron pockets, unlike the nesting between electron and hole pockets, as seen in the majority of undoped pnictides. The new AF ordering is derived from the features common to high-Tc pnictides; however, it has not been reported so far for other high-Tc pnictides because of their poor electron doping capability.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| LaFeAsO1-xHx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 20 | Pressure not reported | unknown |
| LaFeAsO1-xFx Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 20 | Pressure not reported | unknown |
Similar papers
Quantum critical behavior in heavily doped LaFeAsO1−xHx pnictide superconductors analyzed using nuclear magnetic resonance
similarity 0.97R. Sakurai et al.
Source status unknown — claims are unverified
Local antiferromagnetic correlations in the iron pnictide superconductors LaFeAsO1−xFx and Ca(Fe1−xCox)2As2 as seen via normal-state susceptibility
similarity 0.95R. Klingeler et al.
Source status unknown — claims are unverified
A75s NMR study of single crystals of the heavily overdoped pnictide superconductors Ba1−xKxFe2As2 (x=0.7 and 1)
similarity 0.94S. W. Zhang et al.
Source status unknown — claims are unverified
Spin and charge dynamics ruled by antiferromagnetic order in iron pnictide superconductors
similarity 0.94E. Kaneshita & T. Tohyama
Source status unknown — claims are unverified
F19 NMR investigation of the iron pnictide superconductor LaFeAsO0.89F0.11
similarity 0.94K. Ahilan et al.
Source status unknown — claims are unverified
Lattice dynamics of Ti-based pnictide superconductors Ba1−xNaxTi2Sb2O
similarity 0.94A. P. Litvinchuk et al.
Source status unknown — claims are unverified