PMID: 15245109Jul 13, 2004Paper

Kinetic roughening of ion-sputtered Pd(001) surface: beyond the Kuramoto-Sivashinsky model

Physical Review Letters
T C KimJ-S Kim

Abstract

We investigate the kinetic roughening of Ar+ ion-sputtered Pd(001) surface both experimentally and theoretically. In situ real-time x-ray reflectivity and in situ scanning tunneling microscopy show that nanoscale adatom islands form and grow with increasing sputter time t. Surface roughness W(t) and lateral correlation length xi(t) follow the scaling laws W(t) approximately t(beta) and xi(t) approximately t(1/z) with the exponents beta approximately 0.20 and 1/z approximately 0.20, for an ion beam energy epsilon=0.5 keV, which is inconsistent with the prediction of the Kuramoto-Sivashinsky (KS) model. We thereby extend the KS model by applying the coarse-grained continuum approach of the Sigmund theory to the order of O(inverted Delta(4),h(2)), where h is the surface height, and derive a new term of the form inverted Delta(2)(inverted Delta h)(2) which plays a decisive role in describing the observed morphological evolution of the sputtered surface.

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Citations

Jun 29, 2007·Journal of Materials Science. Materials in Medicine·Renfu QuanWei Li
Jun 14, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·E TrynkiewiczF Krok
Jun 3, 2009·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Scott A NorrisMichael J Aziz
Jun 3, 2009·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Javier Muñoz-GarcíaMario Castro
Jun 3, 2009·Journal of Physics. Condensed Matter : an Institute of Physics Journal·M JoeJ-S Kim
Jun 3, 2009·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Herbert Wormeester, Bene Poelsema
Jun 3, 2009·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Debabrata Ghose
Aug 24, 2012·Journal of Physics. Condensed Matter : an Institute of Physics Journal·J Muñoz-GarcíaL Vázquez
May 26, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·J-H KimJ-S Kim
Feb 9, 2005·Physical Review Letters·Mario CastroRaúl Gago
Apr 7, 2010·Physical Review Letters·Javier Muñoz-GarcíaRodolfo Cuerno
Apr 12, 2006·Physical Review Letters·P F A Alkemade
Apr 12, 2006·Physical Review Letters·Javier Muñoz-GarcíaRodolfo Cuerno
Jun 30, 2011·Nanoscale Research Letters·Seungjun LeeWei Lu

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