1.6k citations · 6.2k across the 36 of their papers we have counts for
4 papers · 1 filter
Instantaneous band gap collapse in photoexcited monoclinic VO due to photocarrier doping
Daniel Wegkamp, Marc Herzog, Lede Xian +8
Using femtosecond time-resolved photoelectron spectroscopy we demonstrate that photoexcitation transforms monoclinic VO quasi-instantaneously into a metal. Thereby, we exclude…
The atomic structure of the phase of silicene on Ag(111)
Seymur Cahangirov, Veli Ongun Özçelik, Lede Xian +5
The growth of the reconstructed silicene on Ag substrate has been frequently observed in experiments while its atomic structure and formation mechanism i…
Stable two-dimensional dumbbell stanene: a quantum spin Hall insulator
Peizhe Tang, Pengcheng Chen, Wendong Cao +7
We predict from first-principles calculations a novel structure of stanene with dumbbell units (DB), and show that it is a two-dimensional topological insulator with inverted band…
Germanene: a novel two-dimensional Germanium allotrope akin to Graphene and Silicene
M. E. Dávila, L. Xian, S. Cahangirov +2
Using a gold (111) surface as a substrate we have grown in situ by molecular beam epitaxy an atom-thin, ordered, two-dimensional multi-phase film. Its growth bears strong similarit…