Stick-sudden-rotation and structural polymorphism of (C70)mAun hybrid nanoclusters

Research output: Contribution to journalArticle

Authors

Colleges, School and Institutes

External organisations

  • Molecular Physics Group, School of Physics and Astronomy, University of Birmingham , Edgbaston, Birmingham B15 2TT, U.K.
  • Department of Electronics and Automation, Vocational School of Adana, Cukurova University, Cukurova 01160, Adana, Turkey
  • School of Physics and Information Technology, Shaanxi Normal University, Xi’an 710119, China

Abstract

We fabricated magic number (C 70) m-(Au) n clusters on the Au(111) substrate. These clusters are stable at room temperature but display unpredictable rotational movement. The time duration between two successive rotations is in the order of ∼hour. The cluster rotation is a thermally activated process due to energy fluctuation, which is more significant for small clusters. We followed the rotational movement of (C 70) 10-(Au) 35 clusters using scanning tunneling microscopy. Our observation suggests that thermal fluctuation leads to rapid diffusion of Au atoms at the edges of the cluster and the cluster has many metastable configurations associated with structural polymorphism.

Details

Original languageEnglish
Pages (from-to)12791-12796
Number of pages6
JournalJournal of Physical Chemistry C
Volume123
Issue number20
Early online date2 May 2019
Publication statusPublished - 23 May 2019