Boyang Zhao, Guodong Ren, Hongyan Mei, Vincent C Wu, Shantanu Singh, Gwan-Yeong Jung, Huandong Chen, Raynald Giovine, Shanyuan Niu, Arashdeep S Thind, Jad Salman, Nick S Settineri, Bryan C Chakoumakos, Michael E Manley, Raphael P Hermann, Andrew R Lupini, Miaofang Chi, Jordan A Hachtel, Arkadiy Simonov, Simon J Teat, Raphaële J Clément, Mikhail A Kats, Jayakanth Ravichandr, Rohan Mishra
Structural disorder has been shown to enhance and modulate magnetic, electrical, dipolar, electrochemical, and mechanical properties of materials. However, the possibility of obtaining novel optical and optoelectronic properties from structural disorder remains an open question. Here, we show unambiguous evidence of disorder - in the form of anisotropic, picoscale atomic displacements - modulating the refractive index tensor and resulting in the giant optical anisotropy observed in BaTiS3 , a quasi-one-dimensional hexagonal chalcogenide...
March 23, 2024: Advanced Materials