Quantifying the hole distribution in cuprates: Atomic‐resolution near‐edge fine‐structures of the superconductor Sr3Ca11Cu24O41

Sr 14‐x Ca x Cu 24 O 41 is a fascinating member in the family of cuprates, not only because of its peculiar crystal structure where two distinct units, corner‐shared CuO 2 chains and edge‐shared Cu 2 O 3 ladders, coexist within the unit cell but also because it is the only known superconductor with a non two‐dimensional CuO 2 plane structure. Indeed, the superconducting state theoretically predicted by E. Dagotto and T.M. Rice [1] was first …