Germanene: a novel two-dimensional germanium allotrope akin to graphene and silicene
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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
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Optical and magnetic properties of free-standing silicene, germanene and T-graphene system
TL;DR: In this article, the magnetic properties of two-dimensional (2D) materials such as silicene and germanene were studied by introducing mono-and di-vacancy (DV), as well as by doping phosphorus and aluminium into the pristine silicenes.
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New perspectives 2Ds to 3Ds MXenes and graphene functionalized systems as high performance energy storage materials
TL;DR: In this article, the synthesis route, the select properties and applications of 2D graphene and MXenes materials, however, the trend towards composite materials and 3D nanoarchitectures are more promising.
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Schottky potential barrier and spin polarization at Co/antimonene interfaces
TL;DR: In this article, the geometry, electronic structure and magnetic properties of the interfaces between Co (0001) and monolayer, bilayer and trilayer antimonene with different stacking models were investigated.
Journal ArticleDOI
Tunable adsorption behavior of small molecule on GeP monolayer by applied strain and electric field
Chunping Niu,Tiansong Lan,Dawei Wang,Jianbin Pan,Jifeng Chu,Chaoyu Wang,Huan Yuan,Aijun Yang,Xiaohua Wang,Mingzhe Rong +9 more
TL;DR: In this article, the sensing properties of GeP monolayer to small gas molecule (CO, CO2, O2, H2O, NH3, NO and NO2) have been investigated by performing first-principle calculations.
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Reconciling the electronic and geometric corrugations of the hexagonal boron nitride and graphene nanomeshes
TL;DR: In this paper, the divergence between the density functional theory (DFT) calculated geometric corrugation, and scanning tunneling microscope (STM) measured apparent corrugations, of metal-supported 2D films that feature chemically distinct regions.
References
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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.
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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.
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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.
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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.
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