Infrared Measurement of the Pseudogap of P-Doped and Co-Doped High-Temperature BaFe2As2 Superconductors
S. J. Moon, A. A. Schafgans, S. Kasahara, T. Shibauchi, T. Terashima, Y. Matsuda, M. A. Tanatar, R. Prozorov, A. Thaler, P. C. Canfield, A. S. Sefat, D. Mandrus, D. N. Basov
DOI 10.1103/PhysRevLett.109.027006 · 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
We report on infrared studies of charge dynamics in a prototypical pnictide system: the BaFe2As2 family. Our experiments have identified hallmarks of the pseudogap state in the BaFe2As2 system that mirror the spectroscopic manifestations of the pseudogap in the cuprates. The magnitude of the infrared pseudogap is in accord with that of the spin-density-wave gap of the parent compound. By monitoring the superconducting gap of both P- and Co-doped compounds, we find that the infrared pseudogap is unrelated to superconductivity. The appearance of the pseudogap is found to correlate with the evolution of the antiferromagnetic fluctuations associated with the spin-density-wave instability. The strong-coupling analysis of infrared data further reveals the interdependence between the magnetism and the pseudogap in the iron pnictides.
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 |
| Ba(Fe1-xCox)2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 22 | Pressure not reported | unknown |
Similar papers
Infrared Measurement of the Pseudogap in P-Doped and Co-Doped BaFe2As2 High-Temperature Superconductors
similarity 1.00S. J. Moon et al. · 2012 · arXiv:1207.3567
Source status unknown — claims are unverified
Infrared pseudogap in cuprate and pnictide high-temperature superconductors
similarity 0.95S. J. Moon et al.
Source status unknown — claims are unverified
Full-Gap Superconductivity in BaAs/Ferropnictide Heterostructures
similarity 0.95Ming-Qiang Ren et al.
Source status unknown — claims are unverified
On infrared pseudogap in cuprate and pnictide high-temperature superconductors
similarity 0.95S. J. Moon et al. · 2014 · arXiv:1404.7233
Source status unknown — claims are unverified
Band- and momentum-dependent electron dynamics in superconducting Ba(Fe1−xCox)2As2 as seen via electronic Raman scattering
similarity 0.94B. Muschler et al.
Source status unknown — claims are unverified
Experimental investigation of the suppressed superconducting gap and double-resonance mode in Ba1−xKxFe2As2
similarity 0.94S. Ideta et al.
Source status unknown — claims are unverified