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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A theoretical review on electronic, magnetic and optical properties of silicene.
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TL;DR: The results obtained so far from experimental and theoretical studies in understanding silicene have shown enough significant promising features to open a new direction in the silicon industry, silicon based nano-structures in spintronics and in opto-electronic devices.
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Large area planar stanene epitaxially grown on Ag(1 1 1)
Junji Yuhara,Yuya Fujii,Kazuki Nishino,Naoki Isobe,Masashi Nakatake,Lede Xian,Angel Rubio,Angel Rubio,Guy Le Lay +8 more
TL;DR: In this paper, the authors have grown epitaxial 2D stanene on a single crystal template and determined its crystalline structure synergetically by scanning tunneling microscopy, high-resolution synchrotron radiation photoemission spectroscopy, and advanced first principles calculations.
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All-Optical Switching of Two Continuous Waves in Few Layer Bismuthene Based on Spatial Cross-Phase Modulation
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TL;DR: In this article, a few-layer bismuthene with an average thickness of ∼3 nm and a lateral size of ∼0.2 μm was synthesized and the corresponding band structure from mono-to sextuple-layer was therotically calculated.
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Stability and strength of atomically thin borophene from first principles calculations
Bo Peng,Hao Zhang,Hezhu Shao,Zeyu Ning,Yuanfeng Xu,Gang Ni,Hong-Liang Lu,David Wei Zhang,Heyuan Zhu +8 more
TL;DR: In this article, the authors examined the dynamical, thermodynamic and mechanical stability of, and striped borophene, and showed a deep connection between stability and strength, and helped researchers to estimate accurately the mechanical performance of 2D materials.
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2DMatPedia, an open computational database of two-dimensional materials from top-down and bottom-up approaches
Jun Zhou,Lei Shen,M. D. Costa,Kristin A. Persson,Kristin A. Persson,Shyue Ping Ong,Patrick Huck,Yunhao Lu,Xiaoyang Ma,Yiming Chen,Hanmei Tang,Yuan Ping Feng +11 more
TL;DR: In this paper, a large dataset of 2D materials, with more than 6,000 monolayer structures, obtained from both top-down and bottom-up discovery procedures, is presented.
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.
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.
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