Germanene: a novel two-dimensional germanium allotrope akin to graphene and silicene
Reads0
Chats0
TLDR
In this article, an atom-thin, ordered, two-dimensional multi-phase film was grown in situ through germanium molecular beam epitaxy using a gold surface as a substrate.Abstract:
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.read more
Citations
More filters
Journal ArticleDOI
Symmetry breaking induced bandgap opening in epitaxial germanene on WSe2
Qilong Wu,Meysam Bagheri Tagani,Qi Tian,Sahar Izadi Vishkayi,Li Zhang,Long-Jing Yin,Yuan Tian,Lijie Zhang,Zhihui Qin +8 more
TL;DR: In this paper , a quasi-freestanding germanene with linear dispersion relation of the band structure is well grown on a WSe2/Au(100) substrate.
Journal ArticleDOI
Variation of the electronic properties of the silicene nanosheet passivated by hydrogen atoms: A DFT investigation
TL;DR: In this paper, the influence of hydrogenation on the bandgap and I-V characteristics of H-silicene has been investigated using the first-principles calculations.
Journal ArticleDOI
Excellent valleytronic properties and nontrivial topological phase in germanene heterostructure
TL;DR: In this article, a density functional analysis of the heterostructures of germanene and SbF has been carried out, and it was shown that Germanene/SbF is a topological insulator.
Proceedings ArticleDOI
Physics of electronic transport in two-dimensional materials for future FETs
TL;DR: In this article, the basic physical properties of electron transport in two-dimensional materials are discussed, and the predicted thermodynamic instability of 2D crystals may influence charge transport via the coupling of electrons with acoustic flexural modes.
Journal ArticleDOI
Effective modulating the electronic and magnetic properties of VI3 monolayer: A first-principles calculation
TL;DR: In this paper, the authors implemented an effective adjustment on the electronic and magnetic properties of VI3 monolayer by means of first-principles calculation, and the results indicated that the most stable structure of the VI3-monolayer is particularly susceptible to the calculation parameter such as Hubbard U and the spin-orbit coupling (SOC).
References
More filters
Journal ArticleDOI
Two- and one-dimensional honeycomb structures of silicon and germanium.
TL;DR: In this paper, first-principles calculations of structure optimization, phonon modes, and finite temperature molecular dynamics predict that silicon and germanium can have stable, two-dimensional, low-buckled, honeycomb structures.
Journal Article
Two- and one-dimensional honeycomb structures of silicon and germanium
TL;DR: First-principles calculations of structure optimization, phonon modes, and finite temperature molecular dynamics predict that silicon and germanium can have stable, two-dimensional, low-buckled, honeycomb structures, which show remarkable electronic and magnetic properties, which are size and orientation dependent.
Journal ArticleDOI
Quantum spin Hall effect in silicene and two-dimensional germanium.
TL;DR: It is demonstrated that silicene with topologically nontrivial electronic structures can realize the quantum spin Hall effect (QSHE) by exploiting adiabatic continuity and the direct calculation of the Z(2) topological invariant.
Journal ArticleDOI
Experimental Evidence for Epitaxial Silicene on Diboride Thin Films
Antoine Fleurence,Rainer Friedlein,Taisuke Ozaki,Hiroyuki Kawai,Ying Wang,Yukiko Yamada-Takamura +5 more
TL;DR: It is shown that two-dimensional, epitaxial silicene forms through surface segregation on zirconium diboride thin films grown on Si wafers and that the buckling and thus the electronic properties of silicenes are modified by epitaxials strain.
Journal ArticleDOI
Low-energy effective Hamiltonian involving spin-orbit coupling in silicene and two-dimensional germanium and tin
TL;DR: In this article, the authors derived the low energy effective Hamiltonian involving spin-orbit coupling (SOC) for silicene, which is the analog to the graphene quantum spin Hall effect (QSHE) Hamiltonian.
Related Papers (5)
Generalized Gradient Approximation Made Simple
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set.
Georg Kresse,Jürgen Furthmüller +1 more