On the interaction of vacancies in a two-dimensional rare-gas crystal
نویسندگان
چکیده
We study the interaction between vacancies in a two-dimensional van der Waals crystal by molecular dynamics simulation. We find that the vacancy–vacancy interaction is attractive at short distances, but its binding energy is not enough to keep the pair bounded at the melting region where the vacancies are more likely to be created. c © 2007 Elsevier Ltd. All rights reserved. PACS: 61.72.-y; 61.72.Cc; 68.35.Dv; 71.15.Pd; 61.72.Ji
منابع مشابه
Three-dimensional numerical simulation of temperature and flow fields in a Czochralski growth of germanium
For a Czochralski growth of Ge crystal, thermal fields have been analysed numerically using the three-dimensional finite volume method (FLUENT package). The arrangement used in a real Czochralski crystal growth lab included a graphite crucible, heat shield, heating device, thermal insulation and chamber including two gas outlets. We have considered two cases for calculations, which are configur...
متن کاملDesign and Simulation of a New Highly Sensitive Gas Sensor Based on Negative Refraction Photonic Crystal
In this paper, design and simulation of a new highly sensitive gas sensor based on a hybrid photonic crystal (PC) structure, containing negative and positive refractive index sections, is presented. It has been shown that using a PC with negative refraction in the first section, the transmitted power is concentrated on the entrance of the sensing channel, and the transmission of the proposed se...
متن کاملInfluence of the Vacancies on the Buckling Behavior of a Single–Layered Graphene Nanosheet
Graphene is a new class of two-dimensional carbon nanostructure, which holds great promise for the vast applications in many technological fields. It would be one of the prominent new materials for the next generation nano-electronic devices. In this paper the influence of various vacancy defects on the critical buckling load of a single-layered graphene nanosheet is investigated. The nanosheet...
متن کاملDesign and simulation of a pressure sensor based on a two dimensional photonic crystal slab of PbMoO4
In this paper the design and three dimensions (3D) simulation of a photonic crystal (PC) pressure sensor is presented. The device is based on a 2D PC slab of PbMoO4. The simulations are based on finite element method (FEM) and finite-difference time-domain (FDTD) method and are done using CST STUDIO SUITE software. The sensitivity of the proposed sensor is calculated by considering the deformat...
متن کاملLocal Field Correction Effect on Dicluster Stopping Power in a Strongly Coupled Two-Dimensional Electron Gas System
We calculate the stopping power for heavy-ion diclusters moving in a strongly coupled two-dimensional electron gas system by using the local field corrected dielectric function at finite temperature. We obtain a parameterized local field correction factor based on a relation between the thermal compressibility and exchange-correlation energy in two-dimension. The interpolated parameter is deriv...
متن کامل