Soft striped magnetic fluctuations competing with superconductivity in Fe1+xTe
C. Stock, E. E. Rodriguez, O. Sobolev, J. A. Rodriguez-Rivera, R. A. Ewings, J. W. Taylor, A. D. Christianson, M. A. Green
DOI 10.1103/PhysRevB.90.121113 · 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
Neutron spectroscopy is used to investigate the magnetic fluctuations in Fe1+xTe—a parent compound of chalcogenide superconductors. Incommensurate “stripelike” excitations soften with increased interstitial iron concentration. The energy crossover from incommensurate to stripy fluctuations defines an apparent hourglass dispersion. Application of sum rules of neutron scattering find that the integrated intensity is inconsistent with an S=1Fe2+ ground state and significantly less than S=2 predicted from weak crystal field arguments pointing towards the Fe2+ being in a superposition of orbital states. The results suggest that a highly anisotropic order competes with superconductivity in chalcogenide systems.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Fe1+xTe1-yChy Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Fe1+xTe0.7Se0.3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Fe1+xSeyTe1-y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Temperature dependence of the resonance and low-energy spin excitations in superconducting FeTe0.6Se0.4
similarity 0.94Leland W. Harriger et al.
Source status unknown — claims are unverified
Soft striped magnetic fluctuations competing with superconductivity in Fe_{1+x}Te
similarity 0.94C. Stock et al. · 2014 · arXiv:1409.4051
Source status unknown — claims are unverified
Unified Picture for Magnetic Correlations in Iron-Based Superconductors
similarity 0.93Wei-Guo Yin et al.
Source status unknown — claims are unverified
Disorder-dependent superconducting phase diagram at high magnetic fields in Fe1+ySexTe1−x (x∼0.4)
similarity 0.93T. Gebre et al.
Source status unknown — claims are unverified
Atomic-scale coexistence of short-range magnetic order and superconductivity in Fe1+ySe0.1Te0.9
similarity 0.93Ramakrishna Aluru et al.
Source status unknown — claims are unverified
Topological Superconductivity on the Surface of Fe-Based Superconductors
similarity 0.93Gang Xu et al.
Source status unknown — claims are unverified