scholarly journals Two-dimensional honeycomb borophene oxide: strong anisotropy and nodal loop transformation

Nanoscale ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 2468-2475 ◽  
Author(s):  
Chengyong Zhong ◽  
Weikang Wu ◽  
Junjie He ◽  
Guangqian Ding ◽  
Yi Liu ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Strong Anisotropy ◽  
Loop Transformation ◽  
Topological Transformation

Strong anisotropy and a nodal loop in honeycomb borophene oxide and its topological transformation under strain.

scholarly journals Stone–Wales defects preserve hyperuniformity in amorphous two-dimensional networks

2021 ◽  
Vol 118 (3) ◽  
pp. e2016862118
Author(s):  
Duyu Chen ◽  
Yu Zheng ◽  
Lei Liu ◽  
Ge Zhang ◽  
Mohan Chen ◽  
...  
Keyword(s):  
2D Materials ◽  
Single Layer ◽  
Salient Feature ◽  
Density Fluctuations ◽  
Wave Number ◽  
Static Structure Factor ◽  
Two Dimensional ◽  
Static Structure ◽  
Topological Transformation ◽  
Amorphous Graphene

Disordered hyperuniformity (DHU) is a recently discovered novel state of many-body systems that possesses vanishing normalized infinite-wavelength density fluctuations similar to a perfect crystal and an amorphous structure like a liquid or glass. Here, we discover a hyperuniformity-preserving topological transformation in two-dimensional (2D) network structures that involves continuous introduction of Stone–Wales (SW) defects. Specifically, the static structure factor S(k) of the resulting defected networks possesses the scaling S(k)∼kα for small wave number k, where 1≤α(p)≤2 monotonically decreases as the SW defect concentration p increases, reaches α≈1 at p≈0.12, and remains almost flat beyond this p. Our findings have important implications for amorphous 2D materials since the SW defects are well known to capture the salient feature of disorder in these materials. Verified by recently synthesized single-layer amorphous graphene, our network models reveal unique electronic transport mechanisms and mechanical behaviors associated with distinct classes of disorder in 2D materials.

scholarly journals Velocity statistics inside coherent vortices generated by the inverse cascade of 2-D turbulence

2016 ◽  
Vol 809 ◽  
Author(s):  
I. V. Kolokolov ◽  
V. V. Lebedev
Keyword(s):  
Velocity Profile ◽  
Structure Function ◽  
Correlation Functions ◽  
Two Dimensional ◽  
Strong Anisotropy ◽  
Velocity Fluctuations ◽  
Inverse Cascade ◽  
Velocity Statistics ◽  
Flow Fluctuations ◽  
Coherent Vortices

We analyse velocity fluctuations inside coherent vortices generated as a result of the inverse cascade in the two-dimensional (2-D) turbulence in a finite box. As we demonstrated in Kolokolov & Lebedev (Phys. Rev. E, vol. 93, 2016, 033104), the universal velocity profile, established in Laurie et al. (Phys. Rev. Lett., vol. 113, 2014, 254503), corresponds to the passive regime of the flow fluctuations. This property enables one to calculate correlation functions of the velocity fluctuations in the universal region. We present the results of the calculations that demonstrate a non-trivial scaling of the structure function. In addition the calculations reveal strong anisotropy of the structure function.

scholarly journals Two-Dimensional Superfluidity of Exciton Polaritons Requires Strong Anisotropy

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Ehud Altman ◽  
Lukas M. Sieberer ◽  
Leiming Chen ◽  
Sebastian Diehl ◽  
John Toner
Keyword(s):  
Two Dimensional ◽  
Strong Anisotropy ◽  
Exciton Polaritons

scholarly journals 2D layered SiP as anisotropic nonlinear optical material

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Huseyin Sar ◽  
Jie Gao ◽  
Xiaodong Yang
Keyword(s):  
Crystal Orientation ◽  
Nonlinear Optical ◽  
Third Harmonic Generation ◽  
Optical Material ◽  
Two Dimensional ◽  
Nonlinear Optical Material ◽  
Strong Anisotropy ◽  
Third Harmonic ◽  
Flake Thickness ◽  
Polarized Raman

AbstractTwo-dimensional (2D) material of silicon phosphide (SiP) has recently been shown as a promising optical material with large band gap, fast photoresponse and strong anisotropy. However, the nonlinear optical properties of 2D SiP have not been investigated yet. Here, the thickness-dependent in-plane anisotropic third-harmonic generation (THG) from the mechanically exfoliated 2D layered SiP flakes is reported. The crystal orientation of the SiP flake is determined by the angle-resolved polarized Raman spectroscopy. The angular dependence of the THG emission with respect to the incident linear polarization is found to be strongly anisotropic with the two-fold polarization dependence pattern. Furthermore, the effect of the SiP flake thickness on the THG power is analyzed.

A highly polarization sensitive antimonene photodetector with a broadband photoresponse and strong anisotropy

2018 ◽  
Vol 6 (10) ◽  
pp. 2509-2514 ◽  
Author(s):  
Feihong Chu ◽  
Mingyan Chen ◽  
Yin Wang ◽  
Yiqun Xie ◽  
Beiyun Liu ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Strong Anisotropy ◽  
High Responsivity ◽  
Two Dimensional Materials

Photodetectors based on two-dimensional materials have shown impressive performance including fast and broadband photoresponse and high responsivity.

scholarly journals Strong anisotropy and magnetostriction in the two-dimensional Stoner ferromagnetFe3GeTe2

2016 ◽  
Vol 93 (13) ◽  
Author(s):  
Houlong L. Zhuang ◽  
P. R. C. Kent ◽  
Richard G. Hennig
Keyword(s):  
Two Dimensional ◽  
Strong Anisotropy

Strong anisotropy and layer-dependent carrier mobility of two-dimensional semiconductor ZrGeTe4

2020 ◽  
Vol 32 (32) ◽  
pp. 325502
Author(s):  
Pengsheng Guo ◽  
Jia Liang ◽  
Benliang Zhou ◽  
Weike Wang ◽  
Ziran Liu
Keyword(s):  
Carrier Mobility ◽  
Two Dimensional ◽  
Strong Anisotropy

scholarly journals Ultra-Broadband Photodetection Based on Two-Dimensional Layered Ta2NiSe5 with Strong Anisotropy and High Responsivity

2021 ◽  
pp. 109894
Author(s):  
Yan Zhang ◽  
Wenzhi Yu ◽  
Jie Li ◽  
Jie Chen ◽  
Zhuo Dong ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Strong Anisotropy ◽  
High Responsivity
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