| M.E. Dávila, L. Xian, S. Cahangirov, A. Rubio, G. Le Lay
The article reports the successful synthesis of germanene, a two-dimensional (2D) germanium allotrope, using molecular beam epitaxy on a gold (111) surface. This method is similar to the synthesis of silicene on silver (111) surfaces. The growth process and properties of germanene are compared to those of silicene, highlighting the challenges and similarities in their formation. Detailed synchrotron radiation core-level spectroscopy and advanced Density Functional Theory (DFT) calculations are used to identify the identified phase as a √3x√3R(30°) germanene layer on a √7x√7 R(19.1°) Au(111) supercell. The study provides compelling evidence for the first synthetic realization of germanene, a novel 2D material with potential applications in electronics, optoelectronics, and topological insulators. The findings suggest that germanene could exhibit high carrier mobilities, robust topological properties, and the possibility of superconductivity, making it a promising material for future technological advancements.The article reports the successful synthesis of germanene, a two-dimensional (2D) germanium allotrope, using molecular beam epitaxy on a gold (111) surface. This method is similar to the synthesis of silicene on silver (111) surfaces. The growth process and properties of germanene are compared to those of silicene, highlighting the challenges and similarities in their formation. Detailed synchrotron radiation core-level spectroscopy and advanced Density Functional Theory (DFT) calculations are used to identify the identified phase as a √3x√3R(30°) germanene layer on a √7x√7 R(19.1°) Au(111) supercell. The study provides compelling evidence for the first synthetic realization of germanene, a novel 2D material with potential applications in electronics, optoelectronics, and topological insulators. The findings suggest that germanene could exhibit high carrier mobilities, robust topological properties, and the possibility of superconductivity, making it a promising material for future technological advancements.