Báo cáo sinh học: Low-energy structures of clusters supported on metal fcc(110) surface

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Báo cáo sinh học: " Low-energy structures of clusters supported on metal fcc(110) surface"Nanoscale Research Letters This Provisional PDF corresponds to the article as it appeared upon acceptance. Fully formatted PDF and full text (HTML) versions will be made available soon. Low-energy structures of clusters supported on metal fcc(110) surfaces Nanoscale Research Letters 2011, 6:633 doi:10.1186/1556-276X-6-633 Peng Zhang (zhpeng.v@gmail.com) Liuxue Ma (072021011@fudan.edu.cn) Hezhu Shao (hzshao@fudan.edu.cn) Jinhu Zhang (10210720011@fudan.edu.cn) Wenxian Zhang (wenxianzhang@fudan.edu.cn) Xijing Ning (xjning@fudan.edu.cn) Jun Zhuang (zhuang1022@gmail.com) ISSN 1556-276X Article type Nano Express Submission date 16 June 2011 Acceptance date 15 December 2011 Publication date 15 December 2011 Article URL http://www.nanoscalereslett.com/content/6/1/633 This peer-reviewed article was published immediately upon acceptance. It can be downloaded, printed and distributed freely for any purposes (see copyright notice below). Articles in Nanoscale Research Letters are listed in PubMed and archived at PubMed Central. For information about publishing your research in Nanoscale Research Letters go to http://www.nanoscalereslett.com/authors/instructions/ For information about other SpringerOpen publications go to http://www.springeropen.com © 2011 Zhang et al. ; licensee Springer.This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Low-energy structures of clusters supported on metalfcc(110) surfacesPeng Zhang1, Liuxue Ma1, Hezhu Shao1, Jinhu Zhang1, Wenxian Zhang1, XijingNing2 and Jun Zhuang*11 Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education),Department of Optical Science and Engineering, Fudan University, Shanghai 200433,China2 Applied Ion Beam Physics Lab, Institute of Modern Physics, Fudan University,Shanghai 200433, China.*Corresponding author: junzhuang@fudan.edu.cnEmail addresses:PZ: zhpeng.v@gmail.comLXM: 072021011@fudan.edu.cnHZS: hzshao@fudan.edu.cnJHZ: 10210720011@fudan.edu.cnWXZ: wenxianzhang@fudan.edu.cnXJN: xjning@fudan.edu.cnJZ: junzhuang@fudan.edu.cnAbstractThe low-energy structures (LESs) of adatom clusters on a series of metalface-centered cubic (fcc) (110) surfaces are systematically studied by the geneticalgorithm, and a simplified model based on the atomic interactions is developed toexplain the LESs. Two different kinds of LES group mainly caused by the differentnext nearest-neighbor (NNN) adatom-adatom interaction are distinguished, althoughthe NNN atomic interaction is much weaker than the nearest-neighbor interaction. Fora repulsive NNN atomic interaction, only the linear chain is included in the LESgroup. However, for an attractive one, type of structure in the LES group is variousand replace gradually one by one with cluster size increasing. Based on our model, wealso predict the shape feature of the large cluster which is found to be related closelyto the ratio of NN and NNN bond energies, and discuss the surface reconstruction inthe view of atomic interaction. The results are in accordance with the experimentalobservations.Keywords: supported cluster; structure; shape; metal surface. 1PACS: 68.43.Hn; 68.43.Fg. 2IntroductionIn the next-generation microelectronics and ultra-high-density recording, the fullymonodispersed nanostructures are believed to be one of the most promising materials[1]. In order to fabricate such nanostructures, knowledge of the morphology ofnanoclusters on surfaces becomes enormously important. So far, numerousexperimental observations and theoretical investigations into structures of clustershave been reported on transition and noble fcc metal surfaces, e.g., fcc(111), fcc(100),and fcc(110) surfaces [2-10]. However, such ...