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dc.contributor.authorEsen, M.
dc.contributor.authorTuzemen, A. T.
dc.contributor.authorOzdemir, M.
dc.descriptionWOS: 000368455100030en_US
dc.description.abstractThe mobility of clusters on a semiconductor surface for various values of cluster size is studied as a function of temperature by kinetic Monte Carlo method. The cluster resides on the surface of a square grid. Kinetic processes such as the diffusion of single particles on the surface, their attachment and detachment to/from clusters, diffusion of particles along cluster edges are considered. The clusters considered in this study consist of 150-6000 atoms per cluster on average. A statistical probability of motion to each direction is assigned to each particle where a particle with four nearest neighbors is assumed to be immobile. The mobility of a cluster is found from the root mean square displacement of the center of mass of the cluster as a function of time. It is found that the diffusion coefficient of clusters goes as D = A (T) N-alpha where N is the average number of particles in the cluster, A (T) is a temperature-dependent constant and a is a parameter with a value of about -0.64 < alpha < -0.75. The value of a is found to be independent of cluster sizes and temperature values (170-220 K) considered in this study. As the diffusion along the perimeter of the cluster becomes prohibitive, the exponent approaches a value of -0.5. The diffusion coefficient is found to change by one order of magnitude as a function of cluster size.en_US
dc.subjectdiffusion constanten_US
dc.subjectcluster mobilityen_US
dc.subjectMonte Carlo methoden_US
dc.titleMobility of large clusters on a semiconductor surface: Kinetic Monte Carlo simulation resultsen_US
dc.relation.journalCHINESE PHYSICS Ben_US
dc.contributor.department[Esen, M.] Cukurova Univ, Vocat Sch Adana, TR-01160 Adana, Turkey -- [Tuzemen, A. T.] Cumhuriyet Univ, Dept Sci & Math Educ, Fac Educ, TR-58140 Sivas, Turkey -- [Ozdemir, M.] Cukurova Univ, Dept Phys, TR-01330 Adana, Turkeyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US

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