Fermi-surface induced modulation in an optimally doped YBCO superconductor

Xuerong Liu, Zahirul Islam, Sunil K. Sinha +4

We have observed a Fermi-surface (FS) induced lattice modulation in a YBCO superconductor with a wavevector along CuO chains, {\it i.e.} ${\mathbf{q}}_1$=(0,$\delta$,0). The value of $δ\sim0…