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Non-universal finite-size scaling of rough surfaces

Pradipta Kumar Mandal and Debnarayan Jana

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We demonstrate the non-universal behavior of finite-size scaling in (1+1) dimension of a nonlinear discrete growth model involving extended particles in a generalized point of view. In particular, we show the violation of the universal nature of the scaling function corresponding to the height fluctuation in (1+1) dimension. The second-order moment of the height fluctuation shows three distinct crossover regions separated by two crossover timescales namely, t×1 and t×2. Each regime has different scaling properties. The overall scaling behavior is postulated with a new scaling relation represented as the linear sum of two scaling functions valid for each scaling regime. Besides, we note the dependence of the roughness exponents on the finite size of the system. The roughness exponents corresponding to the rough surface is compared with the growth rate or the velocity of the surface.


PACS

68.35.Ct Interface structure and roughness

68.55.A- Nucleation and growth

61.43.Hv Fractals; macroscopic aggregates (including diffusion-limited aggregates)

64.60.A- Specific approaches applied to studies of phase transitions

02.60.Cb Numerical simulation; solution of equations

MSC

82C26 Dynamic and nonequilibrium phase transitions (general)

82C24 Interface problems; diffusion-limited aggregation

82D20 Solids

82C80 Numerical methods (Monte Carlo, series resummation, etc.)

65F35 Matrix norms, conditioning, scaling (See also 15A12, 15A60)

Subjects

Computational physics

Surfaces, interfaces and thin films

Condensed matter: structural, mechanical & thermal

Dates

Issue 48 (4 December 2009)

Received 19 June 2009, in final form 9 October 2009

Published 13 November 2009



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