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Interplay between Bonding and Magnetism in the Adsorption of NO on Rh Clusters

Authors :
Ghosh, Prasenjit
Pushpa, Raghani
de Gironcoli, Stefano
Narasimhan, Shobhana
Publication Year :
2007

Abstract

We have studied the adsorption of NO on small Rh clusters, containing one to five atoms, using density functional theory in both spin-polarized and non-spin-polarized forms. We find that NO bonds more strongly to Rh clusters than it does to Rh(100) or Rh(111); however, it also quenches the magnetism of the clusters. This (local) effect results in reducing the magnitude of the adsorption energy, and also washes out the clear size-dependent trend observed in the non-magnetic case. Our results illustrate the competition present between the tendencies to bond and to magnetize, in small clusters.<br />Comment: Submitted to J. of Chem. Phys

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.0709.4365
Document Type :
Working Paper
Full Text :
https://doi.org/10.1063/1.2913242