Fig. 4: Density wave simulations.

a, b Model for the CDW and SDW plotted in the orthorhombic a-b plane. One trilayer is shown. For a, the CDW exists on all layers and is in-phase between the layers. For b, the SDW has a node on the inner plane and is out-of-phase between the two outer planes. In addition, the CDW in a is out-of-phase between trilayers, but the SDW in b is in-phase. c, d Predicted SDW diffraction intensities along k and along l. e, f Predicted CDW diffraction intensities along l. e and f differ in having either even or odd l peaks.