Multiple Time Scales in Diffraction Measurements of Diffusive Surface Relaxation

Details Multiple Time Scales in Diffraction Measurements of Diffusive Surface Relaxation Multiple Time Scales in Diffraction Measurements of Diffusive Surface Relaxation

2005-04-11

arxiv.org/abs/cond-mat/0504264v1

Physics

Condensed Matter

Materials Science

4 pages, 3 figures

Scientific paper

We grew SrTiO3 on SrTiO3 (001) by pulsed laser deposition, using x-ray scattering to monitor the growth in real time. The time-resolved small angle scattering exhibits a well-defined length scale associated with the spacing between unit cell high surface features. This length scale imposes a discrete spectrum of Fourier components and rate constants upon the diffusion equation solution, evident in multiple exponential relaxation of the "anti-Bragg" diffracted intensity. An Arrhenius analysis of measured rate constants confirms that they originate from a single activation energy.

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