Electronic and vibrational nonlinear optical properties of five representative electrides
dc.contributor.author
dc.date.accessioned
2015-10-28T11:46:23Z
dc.date.available
2015-10-28T11:46:23Z
dc.date.issued
2012-08-14
dc.identifier.issn
1549-9618
dc.identifier.uri
dc.description.abstract
The electrides have a very special electronic structure with diffuse excess electrons not localized on any specific atom. Such systems are known to have huge electronic nonlinear optical (NLO) properties. Here, we determine and analyze the vibrational, as compared to the electronic, NLO properties for a representative set of electrides: Li@Calix, Na@Calix, Li@B 10H 14, Li 2 ·TCNQ ·-, and Na 2 ·TCNQ ·-. The static and dynamic vibrational (hyper)polarizabilities are computed by the nuclear relaxation method (with field-induced coordinates and the infinite optical frequency approximation) at the UB3LYP level using a hybrid Pople basis set. In general, the static vibrational β vec and γ ∥ exceed the corresponding static electronic property values by up to an order of magnitude. The same comparison for dynamic vibrational hyperpolarizabilities shows a smaller ratio. For the intensity-dependent refractive index (IDRI) and dc-Kerr processes, the ratio is on the order of unity or somewhat larger; it is less for the dc-Pockels and the electric field induced second harmonic (EFISH) effects (as well as the static α̂) but still important. The role of anharmonicity, motion of the alkali atoms, and substitution of Na for Li is discussed along with specific aspects of the charge distribution associated with the excess electron
dc.description.sponsorship
The following organizations are thanked for financial support: the Spanish Ministerio de Ciencia e Innovacion (MICINN, CTQ2011-23156/BQU) and the DIUE of the Generalitat de Catalunya (2009SGR637). M.G.-B. thanks the Spanish MEC for a doctoral fellowship, no. AP2010-2517. Support for the research of M.S. was received through the ICREA Academia 2009 prize for excellence in research funded by the DIUE of the Generalitat de Catalunya. Financial support from MICINN and the FEDER fund (European Fund for Regional Development) was provided by grant UNGI08-4E-003
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society (ACS)
dc.relation
info:eu-repo/grantAgreement/MICINN//CTQ2011-23156/ES/AVANCES EN CATALISIS Y AROMATICIDAD/
AGAUR/2009-2014/2009 SGR-637
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Reproducció digital del document publicat a: http://dx.doi.org/10.1021/ct300433q
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© Journal of Chemical Theory and Computation, 2012, vol. 8, núm. 8, p. 2688-2697
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Articles publicats (D-Q)
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Tots els drets reservats
dc.title
Electronic and vibrational nonlinear optical properties of five representative electrides
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/embargoedAccess
dc.embargo.terms
Cap
dc.date.embargoEndDate
info:eu-repo/date/embargoEnd/2026-01-01
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
016474
dc.contributor.funder
dc.relation.ProjectAcronym
dc.identifier.eissn
1549-9626