Bulk Superconductivity and Role of Fluctuations in the Iron-Based Superconductor FeSe at High Pressures
Elena Gati, Anna E. Böhmer, Sergey L. Bud’ko, Paul C. Canfield
DOI 10.1103/PhysRevLett.123.167002 · 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
The iron-based superconductor FeSe offers a unique possibility to study the interplay of superconductivity with purely nematic as well magnetic-nematic order by pressure (p) tuning. By measuring specific heat under p up to 2.36 GPa, we study the multiple phases in FeSe using a thermodynamic probe. We conclude that superconductivity is bulk across the entire p range and competes with magnetism. In addition, whenever magnetism is present, fluctuations exist over a wide temperature range above both the bulk superconducting and the magnetic transitions. Whereas the magnetic fluctuations are likely temporal, the superconducting fluctuations may be either temporal or spatial. These observations highlight similarities between FeSe and underdoped cuprate superconductors.
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. | 8 | Pressure unresolved | unknown |
| FeSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 8 | Pressure not reported | onset |
| FeSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | 2.36 GPa | unknown |
Similar papers
Robustness of superconducting properties to transition metal substitution and impurity phases in Fe1−xVxSe
similarity 0.97Franziska K. K. Kirschner et al.
Source status unknown — claims are unverified
Visualization of atomic-scale phenomena in superconductors: Application to FeSe
similarity 0.97Peayush Choubey et al.
Source status unknown — claims are unverified
Superconductivity in FeSe Thin Films Driven by the Interplay between Nematic Fluctuations and Spin-Orbit Coupling
similarity 0.97Jian Kang & Rafael M. Fernandes
Source status unknown — claims are unverified
Robustness of superconductivity to competing magnetic phases in tetragonal FeS
similarity 0.97Franziska K. K. Kirschner et al.
Source status unknown — claims are unverified
Effects of strain on the electronic structure, superconductivity, and nematicity in FeSe studied by angle-resolved photoemission spectroscopy
similarity 0.97G. N. Phan et al.
Source status unknown — claims are unverified
Superconductor-Insulator Quantum Phase Transition in Disordered FeSe Thin Films
similarity 0.97R. Schneider et al.
Source status unknown — claims are unverified