Theory for the change of bond character in divalent-metal clusters

dc.date.accessioned	2008-07-02T09:09:51Z
dc.date.available	2008-07-02T09:09:51Z
dc.date.issued	1991
dc.identifier.issn	0031-9007
dc.identifier.uri	urn:nbn:de:hebis:34-2008070222411
dc.identifier.uri	http://hdl.handle.net/123456789/2008070222411
dc.format.extent	689170 bytes
dc.format.mimetype	application/pdf
dc.language.iso	eng
dc.rights	Urheberrechtlich geschützt
dc.rights.uri	https://rightsstatements.org/page/InC/1.0/
dc.subject.ddc	530
dc.title	Theory for the change of bond character in divalent-metal clusters	eng
dc.type	Aufsatz
dcterms.abstract	To determine the size dependence of the bonding in divalent-metal clusters we use a many-electron Hamiltonian describing the interplay between van der Waals (vdW) and covalent interactions. Using a saddle-point slave-boson method and taking into account the size-dependent screening of charge fluctuations, we obtain for Hg_n a sharp transition from vdW to covalent bonding for increasing n. We show also, by solving the model Hamiltonian exactly, that for divalent metals vdW and covalent bonding coexist already in the dimers.	eng
dcterms.accessRights	open access
dcterms.bibliographicCitation	Phys. Rev. Lett. 67, 1152 (1991)
dcterms.creator	Garcia, Martin E.
dcterms.creator	Pastor, G. M.
dcterms.creator	Bennemann, K. H.
dc.description.et	Extern	ger
dc.subject.pacs	71.30.+h	eng
dc.subject.pacs	36.40.+d	eng
dc.subject.pacs	71.10.+x	eng