Scaling of size distributions of C60 and C70 fullerene surface islands

被引：2

作者：

Dubrovskii, V. G. ^{[1
,2
,3
]}

Berdnikov, Y. ^{[1
,3
]}

Olyanich, D. A. ^{[4
,5
]}

Mararov, V. V. ^{[4
,5
]}

Utas, T. V. ^{[4
,5
]}

Zotov, A. V. ^{[4
,5
,6
]}

Saranin, A. A. ^{[4
,5
]}

机构：

[1] St Petersburg Acad Univ, Khlopina 8-3, St Petersburg 194021, Russia

[2] RAS, Ioffe Phys Tech Inst, Politekh Skaya 26, St Petersburg 194021, Russia

[3] ITMO Univ, Kronverkskiy Pr 49, St Petersburg 197101, Russia

[4] RAS, Inst Automat & Control Proc FEB, Vladivostok 690041, Russia

[5] Far Eastern Fed Univ, Sch Nat Sci, Vladivostok 690950, Russia

[6] Vladivostok State Univ Econ & Serv, Dept Elect, Vladivostok 690600, Russia

来源：

APPLIED SURFACE SCIENCE | 2017年 / 407卷

基金：

俄罗斯科学基金会;

关键词：

Fullerene surface islands; Size distribution; Scaling; GROWTH; AGGREGATION; CLUSTERS;

D O I：

10.1016/j.apsusc.2017.02.161

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We present experimental data and a theoretical analysis for the size distributions of C-60 and C-70 surface islands deposited onto In-modified Si(111)root 3 x root 3-Au surface under different conditions. We show that both fullerene islands feature an analytic Vicsek-Family scaling shape where the scaled size distributions are given by a power law times an incomplete beta-function with the required normalization. The power exponent in this distribution corresponds to the fractal shape of two-dimensional islands, confirmed by the experimentally observed morphologies. Quite interestingly, we do not see any significant difference between C-60 and C-70 fullerenes in terms of either scaling parameters or temperature dependence of the diffusion constants. In particular, we deduce the activation energy for surface diffusion of E-D = 140 +/- 10 meV for both types of fullerenes. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：117 / 120

页数：4