Enhanced Superconducting Gap in the Outer CuO_{2} Plane of the Trilayer Cuprate (Hg, Re)Ba_{2}Ca_{2}Cu_{3}O_{8+δ}
We report the first observation of a momentum-resolved superconducting gap in the Hg-based trilayer cuprate, which holds the highest record of superconducting transition temperature (T_{c}) at ambient pressure. By angle-resolved photoemission spectroscopy utilizing a microfocused beam, clear quasiparticle dispersions originating from the inner and outer CuO_{2} planes (IP and OP, respectively) wer
