English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

Under the assumption that the superconducting state belongs to a singleirreducible representation of lattice symmetry, we argue that the pairingsymmetry in all measured iron-based superconductors is universally consistentwith the A_{1g} s-wave. The robust s-wave pairing throughout the differentfamilies of iron-based superconductors at different doping regions signals twofundamental principles behind high T_c superconducting mechanisms: (1) thecorrespondence principle: the short range magnetic exchange interactions andthe Fermi surfaces act collaboratively to achieve high T_c superconductivityand determine pairing symmetries; (2) the magnetic selection pairing rule: thesuperconductivity is only induced by the magnetic exchange couplings from thesuperexchange mechanism through cation-anion-cation chemical bondings. Theseprinciples explain why the unconventional high T_c superconductivity appears tobe such a rare but robust phenomena with its strict requirement on electronicenvironment. The robust s-wave pairing also reveals that the current standardeffective models with only onsite interactions are not sufficient and a minimummicroscopic model must include strong nearest neighbor repulsive interactionsresulted from the d-d direct bondings to serves as a s-wave symmetrystabilizer. Finally, the sign distribution of the superconducting orderparameters in the reciprocal space is simply a consequence of the form factorsgiven by the leading short-range pairings. The sign change of superconductingorder parameters on Fermi surfaces is not a necessary requirement inrepulsive-interaction-driven high T_c mechanism. The results will guide us tosearch for new electronic structure that supports high T_c superconductivity.

Robustness of s-wave pairing symmetry in iron-based superconductors and  its implications to fundamentals on magnetically-driven high temperature  superconductivity