Structural origins of the infamous "Low Temperature Orthorhombic" to "Low Temperature Tetragonal" phase transition in high-Tc cuprates

Jeremiah P. Tidey, Christopher Keegan, Nicholas C. Bristowe +6

We undertake a detailed high-resolution diffraction study of a novel plain band insulator, La${}_2$MgO${}_4$, which may be viewed as a structural surrogate system of the undoped end-me…