Structural and Magnetic Instabilities of La${}_{2-x}$Sr${}_x$CaCu${}_2$O${}_6$

C. Ulrich, S. Kondo, M. Reehuis +9

A neutron scattering study of nonsuperconducting La${}_{2-x}$Sr${}_x$CaCu${}_2$O${}_6$ (x=0 and 0.2), a bilayer copper oxide without CuO chains, has revealed an unexpected tetragonal-to-or…