Three-dimensional Extremely Short Optical Pulses in Graphene with Inhomogeneities
| Authors | N.N. Konobeeva , M.B. Belonenko |
| Affiliations |
Volgograd State University, 400062 Volgograd, Russia |
| Е-mail | yana_nn@volsu.ru |
| Issue | Volume 11, Year 2019, Number 3 |
| Dates | Received 20 March 2019; revised manuscript received 20 June 2019; published online 25 June 2019 |
| Citation | N.N. Konobeeva, M.B. Belonenko, J. Nano- Electron. Phys. 11 No 3, 03026 (2019) |
| DOI | https://doi.org/10.21272/jnep.11(3).03026 |
| PACS Number(s) | 42.65.Re, 78.67.Ch |
| Keywords | Ultrashort pulse, Graphene (23) , Inhomogenity, Charge density. |
| Annotation |
We consider the Maxwell`s equations for an electromagnetic field, which propagates in impurity graphene with taking into account the spatial inhomogeneity. By heterogeneity, we mean the presence of a region of increased electron density. A particularly important case is inhomogeneity due to areas of increased concentration of conduction electrons due to the presence of impurities. According to this fact, it seems appropriate to investigate the impact of such inhomogeneity on the pulse propagation in impurity graphene. Due to the diversity of impurities and the nature of their interaction with the graphene subsystem, different approaches are possible in such problems. One of these approaches is to consider the scattering of ballistic electrons in graphene by impurities. Impurities are considered responsible for the occurrence of a disorder and a weak localization. In this case, they go beyond the limits of the self-consistent Born`s approximation and the renormalization-group approach is applied. In this paper, the electronic spectrum for the graphene subsystem is taken from the approach of the renormalization group, widely used in quantum field theory, when the transition from areas with lower energy to areas with more energy is caused by a change in the scale of consideration of the system. The main idea is that the Fermi velocity is renormalized, which begins to depend on the electron energy in a logarithmic way. Within the framework of the semi-classical approach, an effective equation for the vector-potential of the electromagnetic field is obtained and solved numerically. It is observed that three-dimensional extremely short optical pulses propagate unstablely with disturbed pulse shape. In this case, the introduction of a spatial inhomogeneity of the charge density into the medium makes it possible to reduce the pulse loss in the amplitude. The influence of the spatial parameters of the inhomogeneity on the propagation pattern of an extremely short optical pulse is also studied. It is shown that the depth and the width of the spatial inhomogeneity of the charge density do not have a significant impact on the pulse shape. |
|
List of References |
Other articles from this number
1) Quantum-chemical Simulation of Divacancy Defects on C(100)-(2×1) Diamond Surface [03001-1-03001-6]2) The Crystalline Structure, Optical and Conductivity Properties of Fluorine Doped ZnO Nanoparticles [03002-1-03002-5]
3) Hydrogen Treatment of Gold Contact on Silicon [03003-1-03003-5]
4) The Wall Temperature Measurement and Effects on the Missile Complex Surfaсe Based on the Semiconductor Diode and Electronic System [03004-1-03004-7]
5) Effect of Nucleic Acids on Oxidation and Photoluminescence of Porous Silicon [03005-1-03005-5]
6) Effects of High Magnetic Field on the Energy Spectra of Two Donors in a Strained Zinc Blende Quantum Dot [03006-1-03006-4]
7) Electrical and Thermal Conductivity of Ternary Composites Graphite Nanoplatelets/TiO2/Epoxy [03007-1-03007-7]
8) Effect of Ultrasound Radiation on Biological Tissues: Physical Bases and Technological Principles [03008-1-03008-4]
9) Structure and Phase Formation Features of Ti-Zr-Ni Quasicrystalline Films under Heating [03009-1-03009-4]
10) Modification of the Defective Structure of Silicon under the Influence of Radiation [03010-1-03010-6]
11) Processing Temperature Effect on Optical and Morphological Parameters of Organic Perovskite CH3NH3PbI3 Prepared Using Spray Pyrolysis Method [03011-1-03011-4]
12) Structural Properties of Porous Carbon Material Formation Activated with Potassium Hydroxide [03012-1-03012-5]
13) Structural Engineering and Mechanical Properties of (Ti-V-Zr-Nb-Hf-Ta)N Coatings Obtained at Different Pressures [03013-1-03013-6]
14) Polymeric Materials Modified by Semiconductor Substances in Friction Units of Braking Devices [03014-1-03014-8]
15) Influence of Vacancies and Pores that Appear during Irradiation in the Surface Metal Layer on Field Emission Current [03015-1-03015-5]
16) Electrodeposition and Mechanical Characterization of Ni/SiC Composite Coatings [03016-1-03016-5]
17) Determination of Optical Characteristics of Nanocoatings by Lorentz Transformation Approach [03017-1-03017-6]
18) Spatial Redistribution of Interstitial Atoms and Vacancies in Semiconductors under the Influence of Pulsed Laser Irradiation [03018-1-03018-6]
19) Planar Defects Impact on Non-fundamental Efficiency Losses in mc-Si Solar Cells [03019-1-03019-5]
20) Surface-barrier Structures Au/n-CdS: Fabrication and Electrophysical Properties [03020-1-03020-6]
21) Sol-Gel Synthesis, Structure and Optical Properties of Nickel-Manganese Ferrites [03021-1-03021-5]
22) Diffusion Saturation of U8A Steel in a Mixture of Metal Powders with the Chloride Ammonia [03022-1-03022-7]
23) Peculiarities of Crystallization of Amorphous Silver at 77 K in Conditions of Laser Herschel Effect [03023-1-03023-4]
24) Efficiency Modeling of Solar Cells Based on the n-Zn1-xMgxO / p-SnS Heterojunction [03024-1-03024-7]
25) Use of the Method of Micro-arc Plasma Oxidation to Increase the Antifriction Properties of the Titanium Alloy Surface [03025-1-03025-5]
26) Temperature Characteristics of Silicon Nanowire Transistor Depending on Oxide Thickness [03027-1-03027-4]
27) Energy Spectrum of Acoustic Emission Signals in Coupled Continuous Media [03028-1-03028-7]
28) Increasing the Measurement Accuracy of Wide-aperture Photometer Based on Digital Camera [03029-1-03029-6]
29) Electrophysical Properties of Multilayer Film Systems Based on Permalloy and Silver [03030-1-03030-4]
30) Effect of Ultrasonic Treatment on Phase Formation Processes in Amorphous Alloy Fe76Ni4Si14B6 [03031-1-03031-4]
31) Modification of Optical Properties of Surface Layers and Thin Films by Laser Treatment [03032-1-03032-5]
32) Evaluation of the Impact Made by the Hydrodynamic Regime of the Granulation Equipment Operation on the Nanoporous Structure of N4HNO3 Granules [03033-1-03033-5]
33) An Efficient Design for Coplanar Ripple Carry Adder in Quantum-dot Cellular Automata Technology [03034-1-03034-4]
34) Thermally Stimulated Luminescence and Conductivity of β-Ga2O3 Crystals [03035-1-03035-7]
35) Effect of Orthophosphoric Acid on Morphology of Nanoporous Carbon Materials [03036-1-03036-6]
36) Formation of Ordered Magnetic Nanoparticles Arrays Using Various Obtaining Techniques [03037-1-03037-5]
37) Formation of Graphite Nanostructures on the Surface of Layered n-InSe Crystal [03038-1-03038-3]
38) Review on Available Theoretical Models for Room Temperature Ferromagnetism in Dilute Magnetic Semiconductors [03039-1-03039-3]
39) Influence of Technology on the Formation of Luminescence Centers in CdS Quantum Dots [0-0]
40) Influence of Technology on the Formation of Luminescence Centers in CdS Quantum Dots [0-0]
