The two gap transitions in Ge${}_{1-x}$Sn${}_x$: effect of non-substitutional complex defects

J. D. Querales-Flores, C. I. Ventura, J. D. Fuhr +1

The existence of non-substitutional $\beta$-Sn defects in Ge${}_{1-x}$Sn${}_x$ was confirmed by emission channeling experiments [Decoster et al., Phys. Rev. B 81, 155204 (2010)], which e…