Germanene: a novel two-dimensional germanium allotrope akin to graphene and silicene

By M. Dávila, L. Xian, S. Cahangirov, Á. Rubio, G. L. Lay. 2014

1,379 citations recorded by the source corpus.

We have grown an atom-thin, ordered, two-dimensional multi-phase film in situ through germanium molecular beam epitaxy using a gold (111) surface as a substrate. Its growth is similar to the formation of silicene layers on silver (111) templates. One of the phases, forming large domains, as observed in scanning tunneling microscopy, shows a clear, nearly flat, honeycomb structure. Thanks to thorough synchrotron radiation core-level spectroscopy measurements and advanced density functional theory calculations we can identify it as a √3 × √3 R(30°) germanene layer in conjunction with a √7 × √7 R(19.1°) Au(111) supercell, presenting compelling evidence of the synthesis of the germanium-based cousin of graphene on gold.

Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/e30b9d03441863a86bd8f8458ffa183857141e88

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In Atomic and Molecular Physics, and Optics

In Materials Chemistry

Citations in the corpus

2D Materials for Gas Sensing Applications: A Review on Graphene Oxide, MoS2, WS2 and Phosphorene (2018, background): “On the other hand, 2D materials constituted of just one atomic species have been successfully synthesized [25], like one layer thick black phosphorus (phosphorene) [21,26] or silicon (silicene) [27,28] or germanium (germanene) [29].”
Artificial gauge fields in materials and engineered systems (2017, positive): “Graphene-like materials, such as silicene [347–349], germanene [350] or stanene [351,352], are expected to exhibit intrinsic spin–orbit coupling of much larger strength than graphene, which could allow direct observation of the quantum spin Hall effect.”