Silicane and germanane: tight-binding and first-principles studies
  We present a first-principles and tight-binding model study of silicane and germanane, the hydrogenated derivatives of two-dimensional silicene and germanene. We find that the materials are stable in freestanding form, analyse the orbital composition, and derive a tight-binding model using first-principles calculations to fit the parameters. 
V. Z\'olyomi, J. R. Wallbank, and V. I. Fal'ko
cond-mat.mtrl-sci cond-mat.mes-hall