Upper critical field and quantum oscillations in tetragonal superconducting FeS
Taichi Terashima, Naoki Kikugawa, Hai Lin, Xiyu Zhu, Hai-Hu Wen, Takuya Nomoto, Katsuhiro Suzuki, Hiroaki Ikeda, Shinya Uji
DOI 10.1103/PhysRevB.94.100503 · 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
The magnetoresistance and magnetic torque of FeS are measured in magnetic fields B of up to 18 T down to a temperature of 0.03 K. The superconducting transition temperature is found to be Tc=4.1K, and the anisotropy ratio of the upper critical field Bc2 at Tc is estimated from the initial slopes to be Γ(Tc)=6.9. Bc2(0) is estimated to be 2.2 and 0.36 T for B∥ab and c, respectively. Quantum oscillations are observed in both the resistance and torque. Two frequencies F=0.15 and 0.20 kT are resolved and assigned to a quasi-two-dimensional Fermi surface cylinder. The carrier density and Sommerfeld coefficient associated with this cylinder are estimated to be 5.8×10−3 carriers/Fe and 0.48mJ/(K2mol), respectively. Other Fermi surface pockets still remain to be found. Band-structure calculations are performed and compared to the experimental results.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| FeS Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.1 | Pressure not reported | midpoint |
| FeS Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5 | Pressure not reported | unknown |
| FeS Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.5 | Pressure not reported | onset |
| FeS Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.4 | Pressure not reported | zero_resistance |
| LaFeAs(O1-xFx) Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 26 | Pressure not reported | unknown |
| 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. | 37 | Pressure not reported | onset |
Similar papers
Strong-coupling superconductivity revealed by scanning tunneling microscope in tetragonal FeS
similarity 0.97Xiong Yang et al.
Source status unknown — claims are unverified
Bulk Superconductivity and Role of Fluctuations in the Iron-Based Superconductor FeSe at High Pressures
similarity 0.97Elena Gati et al.
Source status unknown — claims are unverified
Superconducting and tetragonal-to-orthorhombic transitions in single crystals of FeSe1−xTex (0≤ x ≤0.61)
similarity 0.96Kotaro Terao et al.
Source status unknown — claims are unverified
Density of phonon states in superconducting FeSe as a function of temperature and pressure
similarity 0.96V. Ksenofontov et al.
Source status unknown — claims are unverified
Competing collinear magnetic structures in superconducting FeSe by first-principles quantum Monte Carlo calculations
similarity 0.96Brian Busemeyer et al.
Source status unknown — claims are unverified
Interplay between lattice and spin states degree of freedom in the FeSe superconductor: Dynamic spin state instabilities
similarity 0.96Vladimir Gnezdilov et al.
Source status unknown — claims are unverified