Temperature dependence of the 2D-3D transition in the growth of PTCDA on Ag(111): A real-time X-ray and kinetic Monte Carlo study

被引：70

作者：

Krause, B

Schreiber, F

Dosch, H

Pimpinelli, A

Seeck, OH

机构：

[1] Max Planck Inst Met Res, D-70569 Stuttgart, Germany

[2] Univ Stuttgart, Inst Theoret & Angew Phys, D-70550 Stuttgart, Germany

[3] Univ Blaise Pascal Clermont 2, LASMEA, F-63177 Aubiere, France

[4] Forschungszentrum Julich, IFF, D-52425 Julich, Germany

来源：

EUROPHYSICS LETTERS | 2004年 / 65卷 / 03期

关键词：

D O I：

10.1209/epl/i2003-10090-6

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a real-time X-ray scattering study of the growth modes in organic molecular-beam epitaxy. We have studied the model system 3,4,9,10-perylene-tetracarboxylic dianhydride (PTCDA) on Ag(111) and find a temperature-dependent transition from layer-by-layer growth to islanding. The transition smears out for low substrate temperatures, T, implying that the degree of the layer-by-layer growth of the wetting layer decreases with decreasing T. This behavior has been analyzed quantitatively and reproduced by kinetic Monte Carlo simulations. The implications and consequences of our findings for the understanding of the organic molecular-beam epitaxy are discussed.

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页码：372 / 378

页数：7

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