I will present our recent work on the dual superconductivity enhancement in an iron-pnictide superconductor. By controllably tuning its lattice constant, we shift the strain-sensitive d_z² band toward the Fermi level. This enhances electronic correlations, reconstructs the pairing-relevant d-orbital bands, and enlarges the superconducting gap by over 30%. Our study demonstrates a new route to amplify superconductivity by decoupling electronic correlation from doping constraints, with the unprecedented experimental evidence of d_z²-band-driven Cooper pairing as its key advance.

If time allows, I will also report a paradigm-breaking discovery in the topological superconductor 2M-WS₂ using low-temperature scanning tunneling microscopy (STM): a two-dimensional and lattice-decoupled stripe-like charge order that coexists with superconductivity. This novel order exhibits five distinct rotational orientations while maintaining an identical wavelength, directly challenging the crystallographic determinism of conventional charge density waves.