Micro-ARPES on (Hg,Re)1223 shows the superconducting gap of the outer CuO2 plane is about 57 meV, much larger than Bi2223's roughly 43 meV, while the inner-plane gap is similar, implicating outer-plane pairing in the record Tc.
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Enhanced superconducting gap in the outer CuO$_2$ plane of the trilayer cuprate (Hg,Re)Ba$_2$Ca$_2$Cu$_3$O$_{8+\delta}$
Micro-ARPES on (Hg,Re)1223 shows the superconducting gap of the outer CuO2 plane is about 57 meV, much larger than Bi2223's roughly 43 meV, while the inner-plane gap is similar, implicating outer-plane pairing in the record Tc.