Extended s± scenario for the nuclear spin-lattice relaxation rate in superconducting pnictides
D. Parker, O. V. Dolgov, M. M. Korshunov, A. A. Golubov, I. I. Mazin
DOI 10.1103/PhysRevB.78.134524 · 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
Recently, several measurements of the nuclear spin-lattice relaxation rate T1−1 in the superconducting Fe pnictides have been reported. These measurements generally show no coherence peak below Tc and indicate a low-temperature power-law behavior, the characteristics commonly taken as evidence of unconventional superconductivity with lines of nodes crossing the Fermi surface. In this work we show that (i) the lack of a coherence peak is fully consistent with the previously proposed nodeless extended s±-wave symmetry of the order parameter (whether in the clean or dirty limit) and (ii) the low-temperature power-law behavior can be also explained in the framework of the same model but requires going beyond the Born limit.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Fe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 26.7 | Pressure not reported | onset |
Similar papers
Theory of Raman response of a superconductor with extended s-wave symmetry: Application to the iron pnictides
similarity 0.94Andrey V. Chubukov et al.
Source status unknown — claims are unverified
Spin fluctuations in the ultranodal superconducting state of Fe(Se,S)
similarity 0.92Yifu Cao et al.
Source status unknown — claims are unverified
Density-functional calculations of the electronic structures and magnetism of the pnictide superconductors BaFeAs2 and BaFeSb2
similarity 0.92J. H. Shim et al.
Source status unknown — claims are unverified
Topological Superconductivity and Majorana Fermions in RKKY Systems
similarity 0.92Jelena Klinovaja et al.
Source status unknown — claims are unverified
Enhancement of superconducting fluctuations in a correlated electron system coupled to the lattice
similarity 0.92A. A. Zvyagin et al.
Source status unknown — claims are unverified
Ab initio theory of iron-based superconductors
similarity 0.91F. Essenberger et al.
Source status unknown — claims are unverified