A numerical study of spin-dependent organization of alkali-metal atomic clusters using density-functional method

Research Paper

DOI: 10.1007/s11051-012-1050-y

Cite this article as:
Liu, X., Ito, H. & Torikai, E. J Nanopart Res (2012) 14: 1050. doi:10.1007/s11051-012-1050-y

Abstract

We calculate the different geometric isomers of spin clusters composed of a small number of alkali-metal atoms using the UB3LYP density-functional method. The electron density distribution of clusters changes according to the value of total spin. Steric structures as well as planar structures arise when the number of atoms increases. The lowest spin state is the most stable and Lin,  Nan,  Kn,  Rbn, and Csn with n = 2–8 can be formed in higher spin states. In the highest spin state, the preparation of clusters depends on the kind and the number of constituent atoms. The interaction energy between alkali-metal atoms and rare-gas atoms is smaller than the binding energy of spin clusters. Consequently, it is possible to self-organize the alkali-metal-atom clusters on a non-wetting substrate coated with rare-gas atoms.

Keywords

Spin cluster Self-organization Spin polarization Non-wetting Cold atoms 

Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of TechnologyYokohamaJapan
  2. 2.Interdisciplinary Graduate School of Medicine and Engineering, University of YamanashiKofuJapan

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