Charged impurity-tuning of midgap states in biased Bernal bilayer black phosphorus: an anisotropic electronic phase transition

2018 ◽  
Vol 20 (38) ◽  
pp. 25044-25051 ◽  
Author(s):  
P. T. T. Le ◽  
K. Mirabbaszadeh ◽  
M. Davoudiniya ◽  
M. Yarmohammadi
Keyword(s):  
Phase Transition ◽  
Electric Field ◽  
Green’S Function ◽  
Green's Function ◽  
Black Phosphorus ◽  
Function Technique ◽  
Continuum Approximation ◽  
Charged Impurity ◽  
Electronic Phase ◽  
The Continuum

Tuning of the electronic phase of Bernal bilayer black phosphorus was investigated using a charged impurity and an electric field beyond the continuum approximation: the Green's function technique.

Strain-induced electronic phase transition in phosphorene: A Green’s function study

2019 ◽  
Vol 522 ◽  
pp. 249-255 ◽  
Author(s):  
Nguyen D. Hien ◽  
Masoumeh Davoudiniya ◽  
Kavoos Mirabbaszadeh ◽  
Le T.T. Phuong ◽  
Mohsen Yarmohammadi
Keyword(s):  
Phase Transition ◽  
Green’S Function ◽  
Green's Function ◽  
Function Study ◽  
Electronic Phase

THE EMPIRICAL GREEN’S FUNCTION TECHNIQUE MODIFICATION FOR ACCELEROGRAM SYNTHESIS IN LOWSEISMICITY REGIONS

2018 ◽  
Vol 12 (5-6) ◽  
pp. 72-80
Author(s):  
A. A. Krylov
Keyword(s):  
Green’S Function ◽  
Green's Function ◽  
Main Shock ◽  
Amplitude Spectrum ◽  
Strong Motion ◽  
Function Technique ◽  
Focal Region ◽  
Empirical Green’S Function ◽  
Epicentral Zone ◽  
Empirical Green's Function

In the absence of strong motion records at the future construction sites, different theoretical and semi-empirical approaches are used to estimate the initial seismic vibrations of the soil. If there are records of weak earthquakes on the site and the parameters of the fault that generates the calculated earthquake are known, then the empirical Green’s function can be used. Initially, the empirical Green’s function method in the formulation of Irikura was applied for main shock record modelling using its aftershocks under the following conditions: the magnitude of the weak event is only 1–2 units smaller than the magnitude of the main shock; the focus of the weak event is localized in the focal region of a strong event, hearth, and it should be the same for both events. However, short-termed local instrumental seismological investigation, especially on seafloor, results usually with weak microearthquakes recordings. The magnitude of the observed micro-earthquakes is much lower than of the modeling event (more than 2). To test whether the method of the empirical Green’s function can be applied under these conditions, the accelerograms of the main shock of the earthquake in L'Aquila (6.04.09) with a magnitude Mw = 6.3 were modelled. The microearthquake with ML = 3,3 (21.05.2011) and unknown origin mechanism located in mainshock’s epicentral zone was used as the empirical Green’s function. It was concluded that the empirical Green’s function is to be preprocessed. The complex Fourier spectrum smoothing by moving average was suggested. After the smoothing the inverses Fourier transform results with new Green’s function. Thus, not only the amplitude spectrum is smoothed out, but also the phase spectrum. After such preliminary processing, the spectra of the calculated accelerograms and recorded correspond to each other much better. The modelling demonstrate good results within frequency range 0,1–10 Hz, considered usually for engineering seismological studies.

An application of Green’s function technique for computing well inflow without radial flow assumption

2017 ◽  
Vol 21 (5-6) ◽  
pp. 1049-1058
Author(s):  
A. V. Novikov ◽  
V. S. Posvyanskii ◽  
D. V. Posvyanskii
Keyword(s):  
Green’S Function ◽  
Green's Function ◽  
Radial Flow ◽  
Function Technique

Green’s function of a 2D Fermi system undergoing a topological phase transition

JETP Letters ◽  
1999 ◽  
Vol 69 (2) ◽  
pp. 141-147 ◽  
Author(s):  
V. P. Gusynin ◽  
V. M. Loktev ◽  
S. G. Sharapov
Keyword(s):  
Phase Transition ◽  
Green’S Function ◽  
Green's Function ◽  
Fermi System ◽  
Topological Phase ◽  
Topological Phase Transition
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