Phase transition beneath the superconducting dome in BaFe2(As1−xPx)2
Debanjan Chowdhury, J. Orenstein, Subir Sachdev, T. Senthil
DOI 10.1103/PhysRevB.92.081113 · 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 present a theory for the large suppression of the superfluid density ρs in BaFe2(As1−xPx)2 in the vicinity of a putative spin-density wave quantum critical point at a P doping, x=xc. We argue that the transition becomes weakly first order in the vicinity of xc, and disorder induces puddles of superconducting and antiferromagnetic regions at short length scales; thus, the system becomes an electronic microemulsion. We propose that frustrated Josephson couplings between the superconducting grains suppress ρs. In addition, the presence of “normal” quasiparticles at the interface of the frustrated Josephson junctions will give rise to a highly nontrivial feature in the low-frequency response in a narrow vicinity around xc. We propose a number of experiments to test our theory.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| BaFe2(As1-xPx)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Manipulation of Gap Nodes by Uniaxial Strain in Iron-Based Superconductors
similarity 0.94Jian Kang et al.
Source status unknown — claims are unverified
Suppression of the critical temperature of superconducting Ba(Fe1−xCox)2As2 by point defects from proton irradiation
similarity 0.94Yasuyuki Nakajima et al.
Source status unknown — claims are unverified
Effect of proton irradiation on superconductivity in optimally doped BaFe2(As1−xPx)2 single crystals
similarity 0.94M. P. Smylie et al.
Source status unknown — claims are unverified
Specific heat versus field in the 30 K superconductor BaFe2(As0.7P0.3)2
similarity 0.94J. S. Kim et al.
Source status unknown — claims are unverified
Transport evidence for twin-boundary pinning of superconducting vortices in FeSe
similarity 0.94Taichi Terashima et al.
Source status unknown — claims are unverified
Electronic structure around a vortex core in iron pnictide superconductors
similarity 0.93Da Wang et al.
Source status unknown — claims are unverified