Unveiling the electronic origin of anion order in CrO2−xFx

• DOI: 10.1039/c3cc46336b
• Publication Date: 2013-10-23T17:03:34Z
• Authors: Bing Li; Yanna Chen; Hui Wang; Wen Liang; Guangyao Liu; Weijun Ren; Caifu Li; Zhiquan Liu; Guanghui Rao; Changqing Jin; Zhidong Zhang
• Keywords: Zigzag; Superstructure; Charge density; Charge Density Wave; Lattice (music)

Electron-diffraction and high-resolution lattice images reveal superstructure stripes with wave vectors of (1/3, 0, 1/3) (-1/3, 1/3), which are associated the ordered arrangement F(-). Charge density distribution suggests that these manifest themselves electronically as F(-)-Cr(3+)-F(-) zigzag chains, driven by anisotropic charge interaction F(-) anions.