π-Conjugation in Epitaxial Si(111)-($\sqrt{3}$$\times$$\sqrt{3}$) Surface: an Unconventional "Bamboo Hat" Bonding Geometry for Si

Wei Jiang, Zheng Liu, Miao Zhou +2

The newly observed ($\sqrt{3}$$\times$$\sqrt{3}$) surface reconstruction in heteroepitaxial Si(111) thin films on metal substrates is widely considered as a promising platform to reali…