%0 Journal Article %T Electrically Engineered Band Gap in Two-Dimensional Ge, Sn, and Pb: A First-Principles and Tight-Binding Approach %A Thaneshwor P. Kaloni %A Modarresi Saryazdi, Sayyed Mohsen %A Muhammad Tahir %A Rezaee Roknabadi, Mahmood %A Georg Schreckenbach %A Michael S. Freund %J Journal of Physical Chemistry C %@ 1932-7447 %D 2015