Doping evolution of the anisotropic upper critical fields in the iron-based superconductor Ba1−xKxFe2As2
M. A. Tanatar, Yong Liu, J. Jaroszynski, J. S. Brooks, T. A. Lograsso, R. Prozorov
DOI 10.1103/PhysRevB.96.184511 · 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
In-plane resistivity measurements as a function of temperature and magnetic field up to 35 T with precise orientation within the crystallographic ac plane were used to study the upper critical field Hc2 of the hole-doped iron-based superconductor Ba1−xKxFe2As2. Compositions of the samples studied spanned from under- doped x=0.17 (Tc=12 K) and x=0.22 (Tc=20 K), both in the coexistence range of stripe magnetism and superconductivity, through optimal doping x=0.39 (Tc=38.4 K) and x=0.47 (Tc=37.2 K), to overdoped x=0.65 (Tc=22 K) and x=0.83 (Tc=10 K). We find notable doping asymmetry of the shapes of the anisotropic Hc2(T), suggesting the important role of paramagnetic limiting effects in the H∥a configuration in overdoped compositions and multiband effects in underdoped compositions.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ba1-xKxFe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 12 | Pressure not reported | midpoint |
| Ba1-xKxFe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 20 | Pressure not reported | midpoint |
| Ba1-xKxFe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 38.4 | Pressure not reported | midpoint |
| Ba1-xKxFe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 37.2 | Pressure not reported | midpoint |
| Ba1-xKxFe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 22 | Pressure not reported | midpoint |
| Ba1-xKxFe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 10 | Pressure not reported | midpoint |
| KFe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Low-temperature transport properties of doped Ba0.57K0.43Fe2As2 superconductors in high magnetic field
similarity 0.97Yueshen Wu et al.
Source status unknown — claims are unverified
Expansion of the tetragonal magnetic phase with pressure in the iron arsenide superconductor Ba1−xKxFe2As2
similarity 0.97E. Hassinger et al.
Source status unknown — claims are unverified
Doping evolution of the quasiparticle excitations in heavily hole-doped Ba1−xKxFe2As2: A possible superconducting gap with sign-reversal between hole pockets
similarity 0.97D. Watanabe et al.
Source status unknown — claims are unverified
Competition between superconductivity and magnetic/nematic order as a source of anisotropic superconducting gap in underdoped Ba1−xKxFe2As2
similarity 0.97H. Kim et al.
Source status unknown — claims are unverified
Upper critical field, anisotropy, and superconducting properties of Ba1−xKxFe2As2 single crystals
similarity 0.97Zhao-Sheng Wang et al.
Source status unknown — claims are unverified
Doping evolution of the superconducting gap structure in the underdoped iron arsenide Ba1−xKxFe2As2 revealed by thermal conductivity
similarity 0.96J.-Ph. Reid et al.
Source status unknown — claims are unverified