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cond-mat.mtrl-sci2026★ 1 cited
\textit{Ab initio} \textit{GW}-BSE theory of optical activity in -quartz
Xiaoming Wang, Yanfa Yan
We present an ab initio many-body theory of optical activity in solids within the GW-BSE framework. Dielectric spatial dispersion is formulated in two complementary forms: exciton…
cond-mat.mtrl-sci2026
Photoinduced metastable cation disorder in metal halide double perovskites
Shunran Li, Burak Guzelturk, Conrad A. Kocoj +18
Lead-free perovskites have emerged as environmentally benign alternatives to lead-halide counterparts for optoelectronics. Among them, the double perovskite Cs2AgInCl6 family exhib…