A differential conductance map from scanning tunneling microscopy reveals scattering between the two superconducting condensates of Pb caused by a subsurface stacking fault tetrahedron. Selected for a Synopsis in Physics Magazine and for an Editors’ Suggestion.

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Visualization of Defect-Induced Interband Proximity Effect at the Nanoscale
Thomas Gozlinski, Qili Li, Rolf Heid, Oleg Kurnosikov, Alexander Haas, Ryohei Nemoto, Toyo Kazu Yamada, Jörg Schmalian, and Wulf Wulfhekel
Phys. Rev. Lett. 136, 056401 (2026)

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