Temperature effect on (2+1) experimental Kardar-Parisi-Zhang growth

Abstract

We report on the effect of substrate temperature (T) on both local structure and long-wavelength fluctuations of polycrystalline CdTe thin films deposited on Si(001). A strong T-dependent mound evolution is observed and explained in terms of the energy barrier to inter-grain diffusion at grain boundaries, as corroborated by Monte Carlo simulations. This leads to transitions from uncorrelated growth to a crossover from random-to-correlated growth and transient anomalous scaling as T increases. Due to these finite-time effects, we were not able to determine the universality class of the system through the critical exponents. Nevertheless, we demonstrate that this can be circumvented by analyzing height, roughness and maximal height distributions, which allow us to prove that CdTe grows asymptotically according to the Kardar-Parisi-Zhang (KPZ) equation in a broad range of T. More important, one finds positive (negative) velocity excess in the growth at low (high) T, indicating that it is possible to control the KPZ non-linearity by adjusting the temperature.

arXiv comment6 pages, 5 figures

References in corpus (18)

• Universal Fluctuations of Growing Interfaces: Evidence in Turbulent Liquid Crystals
• Growing interfaces uncover universal fluctuations behind scale invariance
• Generic Dynamic Scaling in Kinetic Roughening
• Exact Maximal Height Distribution of Fluctuating Interfaces
• Scaling Approach to Calculate Critical Exponents in Anomalous Surface Roughening
• Effects of Particle Shape on Growth Dynamics at Edges of Evaporating Colloidal Drops
• Maximal Height Scaling of Kinetically Growing Surfaces
• Universal fluctuations in the growth of semiconductor thin films
• Universal correlators and distributions as experimental signatures of 2+1 Kardar-Parisi-Zhang growth
• Dynamics of Rough Interfaces in Chemical Vapor Deposition: Experiments and a Model for Silica Films
• Kardar-Parisi-Zhang universality class in 2+1 dimensions: Universal geometry-dependent distributions and finite-time corrections
• Numerical study of discrete models in the class of the nonlinear molecular beam epitaxy equation
• Roughness exponents and grain shapes
• Height and roughness distributions in thin films with Kardar-Parisi-Zhang scaling
• Distribution of extremes in the fluctuations of two-dimensional equilibrium interfaces
• Maximal and minimal height distributions of fluctuating interfaces
• Surface and bulk properties of ballistic deposition models with bond breaking
• Faceted anomalous scaling in the epitaxial growth of semiconductor films

Cited by in corpus (19)

• An appetizer to modern developments on the Kardar-Parisi-Zhang universality class
• Tuning across Universalities with a Driven Open Condensate
• Universality and dependence on initial conditions in the class of the nonlinear molecular beam epitaxy equation
• Initial pseudo-steady state & asymptotic KPZ universality in semiconductor on polymer deposition
• Roughness and Correlations in the Transition from Island to Film Growth: Simulations and Application to CdTe Deposition
• KPZ equation with short-range correlated noise: emergent symmetries and non-universal observables
• Substrate effects and diffusion dominated roughening in Cu2O electrodeposition
• Geometry dependence in linear interface growth
• Kardar-Parisi-Zhang growth on one-dimensional decreasing substrates
• Kardar-Parisi-Zhang universality class in ($d+1$)-dimensions
• Hallmarks of the Kardar-Parisi-Zhang universality class elicited by scanning probe microscopy
• Scaling of local roughness distributions
• Width and extremal height distributions of fluctuating interfaces with window boundary conditions
• Height fluctuations in homoepitaxial thin film growth: A numerical study
• Radial Restricted Solid-on-Solid and Etching Interface Growth Models
• One-point height fluctuations and two-point correlators of $(2+1)$ cylindrical KPZ systems
• Height distributions in interface growth: The role of the averaging process
• Numerical calculation of overlap distribution of $(2+1)$-dimensional directed polymer in random media
• Dimensional crossover in Kardar-Parisi-Zhang growth