Line nodes in the energy gap of superconducting BaFe2(As1−xPx)2 single crystals as seen via penetration depth and thermal conductivity
K. Hashimoto, M. Yamashita, S. Kasahara, Y. Senshu, N. Nakata, S. Tonegawa, K. Ikada, A. Serafin, A. Carrington, T. Terashima, H. Ikeda, T. Shibauchi, Y. Matsuda
DOI 10.1103/PhysRevB.81.220501 · 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 report magnetic penetration depth and thermal-conductivity data for high-quality single crystals of BaFe2(As1−xPx)2(Tc=30 K) which provide strong evidence that this material has line nodes in its energy gap. This is distinctly different from the nodeless gap found for (Ba,K)Fe2As2 which has similar Tc and phase diagram. Our results indicate that repulsive electronic interactions play an essential role for Fe-based high-Tc superconductivity but that uniquely there are distinctly different pairing states, with and without nodes, which have comparable Tc.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| BaFe2(As0.67P0.33)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 30 | Pressure not reported | unknown |
| BaFe2(As0.67P0.33)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 30 | Pressure not reported | unknown |
| BaFe2(As1-xPx)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 30 | Pressure not reported | unknown |
| (Ba,K)Fe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| LaFePO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6 | Pressure not reported | unknown |
| (Ba0.45K0.55)Fe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| (Ba0.75K0.25)Fe2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Evidence for superconducting gap nodes in the zone-centered hole bands of KFe2As2 from magnetic penetration-depth measurements
similarity 0.97K. Hashimoto et al.
Source status unknown — claims are unverified
Nodal gap structure of superconducting BaFe2(As1−xPx)2 from angle-resolved thermal conductivity in a magnetic field
similarity 0.96M. Yamashita et al.
Source status unknown — claims are unverified
Superconducting gap in BaFe2(As1−xPx)2 from temperature-dependent transient optical reflectivity
similarity 0.96A. Pogrebna et al.
Source status unknown — claims are unverified
Superconductivity at 23 K and low anisotropy in Rb-substituted BaFe2As2 single crystals
similarity 0.96Z. Bukowski et al.
Source status unknown — claims are unverified
Robust Nodal Superconductivity Induced by Isovalent Doping in Ba(Fe1−xRux)2As2 and BaFe2(As1−xPx)2
similarity 0.96X. Qiu et al.
Source status unknown — claims are unverified
Evolution of the Fermi Surface of BaFe2(As1−xPx)2 on Entering the Superconducting Dome
similarity 0.96H. Shishido et al.
Source status unknown — claims are unverified