Relation between 2Delta/Tc and nodes in Fe-based superconductors
Abstract
We analyze the interplay between the absence or presence of the nodes in the superconducting gap along electron Fermi surfaces (FSs) in Fe-pnictides, and 2Delta/Tc along hole FSs, measured by ARPES. We solve the set of coupled gap equations for 4-band and 5-band models of Fe-pnictides and relate the presence of the nodes to 2/Tc being below a certain threshold. Using ARPES data for 2/Tc, we find that optimally doped (BaK)Fe2As2 and Ba(FeCo)2As2 and likely nodeless, but iso-valent BaFe2(AsP)2 likely has nodes.
0
Turn this paper into a lesson
ArcXiv compiles a structured reading guide from this paper's metadata: plain-English importance, contributions, prerequisite concepts, which sections to read first, flashcards, and a quiz. Grounded in the abstract, never invented.