A two-dimensional ErCu2 intermetallic compound on Cu(111) with moiré-pattern-modulated electronic structures

2020 ◽  
Vol 22 (3) ◽  
pp. 1693-1700 ◽  
Author(s):  
Chaoqiang Xu ◽  
Kejie Bao ◽  
Yande Que ◽  
Yuan Zhuang ◽  
Xiji Shao ◽  
...  

The moiré pattern is found to critically tune the electronic structure of the ErCu2 monolayer within the moiré pattern.

2004 ◽  
Vol 811 ◽  
Author(s):  
Toshio Kamiya ◽  
Kazushige Ueda ◽  
Hidenori Hiramatsu ◽  
Hiromichi Ohta ◽  
Masahiro Hirano ◽  
...  

ABSTRACTElectronic structures of layered oxychalcogenides, LaCuOCh (Ch=S, Se, Te) and La2CdO2Se2, were studied using ab-initio band calculations in relation to their optical and electronic properties. It was found that the dispersions of the top valence bands are much smaller in Γ-Z direction than in Γ-X direction, indicating that the electronic structure is highly two-dimensional, and that holes are confined in the CuCh or CdSe layers. The two-dimensional electronic structure is supported experimentally by staircase-like structure observed in optical absorption spectra at 10 K associated with two excitonic absorption peaks split by spin-orbit interaction of Ch ions. La2CdO2Se2has the largest bandgap due to the two-dimensional network structure of CdSe tetrahedra.


Nanoscale ◽  
2019 ◽  
Vol 11 (16) ◽  
pp. 7857-7865 ◽  
Author(s):  
Bingwen Zhang ◽  
Lele Fan ◽  
Jingsan Hu ◽  
Jianfei Gu ◽  
Baolin Wang ◽  
...  

The two dimensional MnB2 nanosheet exhibits favorable intrinsic and functionalized electronic structure and the nanotube exhibits promising property as anode material for Li-ion battery.


Author(s):  
Mridu Sharma ◽  
Ranber Singh

We investigated the electronic structure modifications in two-dimensional (2D) pentagonal PdS<sub>2</sub> materials by external strains. In the absence of external strain the 2D pentagonal PdS<sub>2</sub> materials are indirect band gap semiconductors. The band gap decreases with an increase in the number of stacking PdS<sub>2</sub> monolayers. The external uniaxial and biaxial strains significantly modify the contributions of p-orbitals of S atoms and d-orbitals of Pd atoms to the conduction and valence band edges. It consequently modify the electronic structures of 2D pentagonal PdS<sub>2</sub> materials. This strain tunability of electronic structures of 2D pentagonal PdS<sub>2</sub> materials may be useful for their electro-mechanical applications.


Microscopy ◽  
2015 ◽  
Vol 64 (suppl 1) ◽  
pp. i40.2-i40
Author(s):  
Jung Hwa Kim ◽  
Kwanpyo Kim ◽  
Zonghoon Lee

2021 ◽  
Author(s):  
Beibei Shi ◽  
Pengfei Qi ◽  
Meiling Jiang ◽  
Yuchen Dai ◽  
Feng Lin ◽  
...  

Van der Waals heterostructures of two-dimensional materials are naturally endowed with the nanoscale moiré pattern, which has become a versatile platform for studying novel quantum phenomena during past decades. Here,...


RSC Advances ◽  
2019 ◽  
Vol 9 (17) ◽  
pp. 9342-9347 ◽  
Author(s):  
Maolin Bo ◽  
Jibiao Li ◽  
Chuang Yao ◽  
Zhongkai Huang ◽  
Lei Li ◽  
...  

The electronic structures of two-dimensional (2D) indium (In) and bismuth (Bi) metal on BN nanosheets are systematically studied using hybrid density functional theory (DFT).


Nano Research ◽  
2021 ◽  
Author(s):  
Yin Yin ◽  
Guanyong Wang ◽  
Chen Liu ◽  
Haili Huang ◽  
Jiayi Chen ◽  
...  

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