Por favor, use este identificador para citar o enlazar este ítem: https://repositorio.ufba.br/handle/ri/17368
metadata.dc.type: Artigo de Periódico
Título : Height distribution of equipotential lines in a region confined by a rough conducting boundary
Otros títulos : Journal of Physics: Condensed Matter
Autor : Castro, C. P. de
Assis, Thiago Albuquerque de
Castilho, Caio Mário Castro de
Andrade, Roberto Fernandes Silva
metadata.dc.creator: Castro, C. P. de
Assis, Thiago Albuquerque de
Castilho, Caio Mário Castro de
Andrade, Roberto Fernandes Silva
Resumen : This work considers the behavior of the height distributions of the equipotential lines in a region confined by two interfaces: a cathode with an irregular interface and a distant flat anode. Both boundaries, which are maintained at distinct and constant potential values, are assumed to be conductors. The morphology of the cathode interface results from the deposit of 2 × 104 monolayers that are produced using a single competitive growth model based on the rules of the Restricted Solid on Solid and Ballistic Deposition models, both of which belong to the Kadar–Parisi–Zhang (KPZ) universality class. At each time step, these rules are selected with probability p and q = 1 − p. For several irregular profiles that depend on p, a family of equipotential lines is evaluated. The lines are characterized by the skewness and kurtosis of the height distribution. The results indicate that the skewness of the equipotential line increases when they approach the flat anode and this increase has a non-trivial convergence to a delta distribution that characterizes the equipotential line in a uniform electric field. The morphology of the equipotential lines is discussed; the discussion emphasizes their features for different ranges of p that correspond to positive, null and negative values of the coefficient of the non-linear term in the KPZ equation.
Palabras clave : Films
Interfaces and solids
Electric potential
Cold field emission
metadata.dc.publisher.country: Brasil
metadata.dc.rights: Acesso Aberto
URI : http://repositorio.ufba.br/ri/handle/ri/17368
Fecha de publicación : 2014
Aparece en las colecciones: Artigo Publicado em Periódico (FIS)

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