Scaling of the superconducting gap with orbital character in FeSe
Luke C. Rhodes, Matthew D. Watson, Amir A. Haghighirad, Daniil V. Evtushinsky, Matthias Eschrig, Timur K. Kim
DOI 10.1103/PhysRevB.98.180503 · 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 use high-resolution angle-resolved photoemission spectroscopy to map the three-dimensional momentum dependence of the superconducting gap in FeSe. We find that on both the hole and electron Fermi surfaces, the magnitude of the gap follows the distribution of dyz orbital weight. Furthermore, we theoretically determine the momentum dependence of the superconducting gap by solving the linearized gap equation using a tight-binding model which quantitatively describes both the experimental band dispersions and orbital characters. By considering a Fermi surface only including one electron pocket, as observed spectroscopically, we obtain excellent agreement with the experimental gap structure. Our finding of a scaling between the superconducting gap and the dyz orbital weight supports the interpretation of superconductivity mediated by spin fluctuations in FeSe.
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. | — | Pressure not reported | unknown |
Similar papers
Influence of Spin-Orbit Coupling in Iron-Based Superconductors
similarity 0.96R. P. Day et al.
Source status unknown — claims are unverified
Momentum Dependence of the Nematic Order Parameter in Iron-Based Superconductors
similarity 0.95H. Pfau et al.
Source status unknown — claims are unverified
Spectroscopic Evidence for an Additional Symmetry Breaking in the Nematic State of FeSe Superconductor
similarity 0.95Cong Li et al.
Source status unknown — claims are unverified
Three-dimensional superconducting gap in FeSe from angle-resolved photoemission spectroscopy
similarity 0.94Y. S. Kushnirenko et al.
Source status unknown — claims are unverified
Orbital Origin of Extremely Anisotropic Superconducting Gap in Nematic Phase of FeSe Superconductor
similarity 0.93Defa Liu et al.
Source status unknown — claims are unverified
Spin fluctuations in the ultranodal superconducting state of Fe(Se,S)
similarity 0.93Yifu Cao et al.
Source status unknown — claims are unverified