Surface composition of K3C60 multilayers and C<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:msubsup><mml:mrow /><mml:mrow><mml:mn>60</mml:mn></mml:mrow><mml:mrow><mml:mn>3</mml:mn><mml:mo>−</mml:mo></mml:mrow></mml:msubsup></mml:math> monolayers investigated by high-resolution electron energy loss spectroscopy

Silien, Christophe; Thiry, P.A.; Caudano, Yves

doi:10.1016/j.apsusc.2004.06.136

Cited by 1 publication

(1 citation statement)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Characteristic low-energy modes are also observed in the HREEL spectra of K 3 C 60 films 41 and of K-doped C 60 monolayers for various alkali coverages. , In such systems the softest HREEL modes occur at an energy between 9 and 11 meV and are assigned to an alkali phonon. ,, Assuming that the energy of such alkali-related vibration scales with the inverse square root of the alkali mass (which is reasonable given the large mass of the fullerene molecule compared to that of the Li and K atoms), an analogous mode is expected in Li 4 C 60 at approximately 24 meV. This energy is very close to that of the second feature (in the HREEL spectrum of Li 4 C 60 (at 26 meV)), which suggests an identification of this mode as a Li-related phonon.…”

Section: Resultsmentioning

confidence: 99%

Low Band Gap and Ionic Bonding with Charge Transfer Threshold in the Polymeric Lithium Fulleride Li₄C₆₀

Macovez¹,

Savage

Schiessling

et al. 2008

J. Phys. Chem. C

View full text Add to dashboard Cite

Low band gap and ionic bonding with charge transfer, threshold in the polymeric lithium fulleride Li(4)C(60) Macovez, Roberto; Savage, Rebecca; Schiessling, Joachim; Kamaras, Katalin; Rudolf, Petra; Venema, L.C. Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. September 22, 2007; In Final Form: NoVember 19, 2007 We demonstrate the growth of crystalline Li 4 C 60 films. The low-energy electron diffraction pattern of the films indicates the formation of polymer chains in the plane of the surface, consistent with the reported crystal structure. Electron energy loss and photoemission spectra identify the Li 4 C 60 polymer as a low band gap semiconductor, with a relatively strong coupling of electrons to low-frequency stretching modes of the polymer bonds and alkali phonons. No evidence is found for hybridization between the Li-and fullerenederived electronic states. Instead, a partial charge transfer takes place, which is the same for different Li concentrations. This result rationalizes the stability of the polymer phase over a wide range of stoichiometries.

show abstract

Section: Resultsmentioning

confidence: 99%

Low Band Gap and Ionic Bonding with Charge Transfer Threshold in the Polymeric Lithium Fulleride Li₄C₆₀

Macovez¹,

Savage

Schiessling

et al. 2008

J. Phys. Chem. C

View full text Add to dashboard Cite

show abstract

Surface composition of K3C60 multilayers and C603− monolayers investigated by high-resolution electron energy loss spectroscopy

Cited by 1 publication

References 16 publications

Low Band Gap and Ionic Bonding with Charge Transfer Threshold in the Polymeric Lithium Fulleride Li₄C₆₀

Low Band Gap and Ionic Bonding with Charge Transfer Threshold in the Polymeric Lithium Fulleride Li₄C₆₀

Contact Info

Product

Resources

About

Surface composition of K3C60 multilayers and C603− monolayers investigated by high-resolution electron energy loss spectroscopy

Cited by 1 publication

References 16 publications

Low Band Gap and Ionic Bonding with Charge Transfer Threshold in the Polymeric Lithium Fulleride Li4C60

Low Band Gap and Ionic Bonding with Charge Transfer Threshold in the Polymeric Lithium Fulleride Li4C60

Contact Info

Product

Resources

About

Low Band Gap and Ionic Bonding with Charge Transfer Threshold in the Polymeric Lithium Fulleride Li₄C₆₀

Low Band Gap and Ionic Bonding with Charge Transfer Threshold in the Polymeric Lithium Fulleride Li₄C₆₀