Orbital-selective correlations are crucial in understanding Fe-based superconductors, yet their origins remain debated.

The gap

Consensus across the literature

Supporting evidence — 4 representative gaps

• Strong electron–phonon coupling in magic-angle twisted bilayer graphene (2024) · doi

  However, despite the dedication of intensive experimental efforts and the proposal of several possible pairing mechanisms 14–24 , the origin of its superconductivity remains elusive.

  Keywords: despite dedication intensive experimental efforts proposal several possible pairing mechanisms origin superconductivity remains elusive
• Emergence of low-energy spin waves in superconducting electron-doped cuprates (2026) · doi

  In the best performing superconductors, the cuprates, superconductivity is intimately linked with magnetism, although the details of this coupling remain elusive.

  Keywords: best performing superconductors cuprates superconductivity intimately linked magnetism details coupling remain elusive
• The evolution of pairing correlation with $3d_{z^{2}}$ electron filling in a bilayer two-orbital model for La$_3$Ni$_2$O$_7$ (2026)

  While its inter-layer super-exchange antiferromagnetic coupling is widely considered crucial for superconductivity, the role of its itinerancy remains undetermined.

  Keywords: inter layer super exchange antiferromagnetic coupling widely considered crucial superconductivity role itinerancy remains undetermined
• Symmetry-required orbital selectivity in monolayer FeSe (2026) · doi

  Orbital-selective correlations are crucial in understanding Fe-based superconductors, yet their origins remain debated.

  Keywords: orbital selective correlations crucial understanding based superconductors origins remain debated