A 4-unit-cell superstructure in optimally doped YBa2Cu3O6.92 superconductor

Zahirul Islam, X. Liu, S. K. Sinha +8

Using high-energy diffraction we show that a 4-unit-cell superstructure, q0=(1/4,0,0), along the shorter Cu-Cu bonds coexists with superconductivity in optimally doped YBCO. A comp…