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Multiple time scales in diffraction measurements of diffusive surface relaxation.

Aaron Fleet·Darren Dale·A R Woll·Y Suzuki·J D Brock
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Abstract

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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Fourier AnalysisLasersMicroscopy, Atomic ForceOxidesStrontiumTitaniumX-Ray DiffractionJournal ArticleResearch Support, N.I.H., ExtramuralResearch Support, Non-U.S. Gov't

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Aaron Fleet, Darren Dale, A R Woll, Y Suzuki, J D Brock. 2006-02-09. Multiple time scales in diffraction measurements of diffusive surface relaxation.. https://doi.org/10.1103/physrevlett.96.055508

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