Discrete superconducting phases in proton-intercalated FeSe thin flakes
W. X. Wang, B. Lei, C. S. Zhu, J. H. Cui, W. Z. Zhuo, Z. J. Xiang, X. G. Luo, X. H. Chen
DOI 10.1103/PhysRevB.106.014509 · 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 successfully manipulated the electronic properties of FeSe thin flakes based on a field-effect transistor with a solid proton conductor as the gate dielectric. The phase diagram as a function of gate voltage demonstrates three evident discrete superconducting phases with Tc corresponding to ∼8, ∼34, and ∼42 K, respectively, which is similar to those observed in LixFeSe and NaxFeSe by tuning Li or Na content with the solid-ion-conductor gating technique. In the protonation process, the final state with a saturation of the amount of hydrogen ions is reached at a moderately low gate voltage. It suggests that such a device based on a proton conductor can be used to modulate the physical properties by controlling the intercalated proton content and to explore the hydrogen storage capacity of materials.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| FeSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 7.3 | Pressure not reported | onset |
| FeSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 34 | Pressure not reported | onset |
| FeSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 42 | Pressure not reported | onset |
| FeSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 41 | Pressure not reported | midpoint |
| FeSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 39 | Pressure not reported | zero_resistance |
| FeSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 8 | Pressure not reported | unknown |
| FeSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 36.7 | Pressure not reported | unknown |
| FeSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 65 | Pressure not reported | unknown |
| (Li0.8Fe0.2)OHFeSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 43 | Pressure not reported | unknown |
| FeSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 41 | Pressure not reported | unknown |
Similar papers
Multifaceted impact of a surface step on superconductivity in atomically thin films
similarity 0.96L.-F. Zhang et al.
Source status unknown — claims are unverified
Robustness of superconducting properties to transition metal substitution and impurity phases in Fe1−xVxSe
similarity 0.96Franziska K. K. Kirschner et al.
Source status unknown — claims are unverified
Superconductivity in epitaxial thin films of Fe1.08Te:Ox
similarity 0.96Weidong Si et al.
Source status unknown — claims are unverified
Robustness of superconductivity to competing magnetic phases in tetragonal FeS
similarity 0.96Franziska K. K. Kirschner et al.
Source status unknown — claims are unverified
Spin fluctuations and superconductivity in powders of Fe1+xTe0.7Se0.3 as a function of interstitial iron concentration
similarity 0.96C. Stock et al.
Source status unknown — claims are unverified
Effects of aging processes at the surface of the superconductor β−FeSe
similarity 0.96L. Lanoël et al.
Source status unknown — claims are unverified