Visualization of the Molecular Jahn-Teller Effect in an Insulating K
            <sub>4</sub>
            C
            <sub>60</sub>
            Monolayer

Wachowiak, Andre; Yamachika, Ryan; Khoo, Khoong Hong; Wang, Y.; Grobis, M.; Lee, D.-H.; Louie, Steven G.; Crommie, Michael F.

doi:10.1126/science.1117303

Cited by 88 publications

(85 citation statements)

References 24 publications

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“…Overall, the evidence to support suggestions that JT effects have been unequivocally observed in STM images [5] seems very thin. One problem with a JT interpretation of these images is that real STM images are influenced by many factors, some of which may be considerably more significant than the rather subtle JT interaction.…”

Section: Effects Of Surface Interaction On Stm Imagessupporting

confidence: 65%

“…In each case, we can produce images to match those observed by Wachowiak et al [5]. We can also do this without invoking a JT effect, provided we assume that the surface or some other interaction (e.g.…”

Section: Discussionmentioning

confidence: 96%

“…Of particular merit is the work of Crommie and co-workers who, in a series of papers [30,5,38,39], have recorded some very intriguing images and spectra of a series of doped C 60 molecules. In one experiment [on Ag(111)], these workers were able to use the STM tip to progressively attach/detach potassium atoms to individual C 60 molecules and subsequently record the scanning tunnelling spectroscopy data shown in Fig.…”

Section: Stm Imaging Of Fullerenes: An Overviewmentioning

confidence: 99%

“…7. In a later work [5], they studied an insulating phase K 4 C 60 and compared it to a conducting layer K 3 C 60 . For small biases, the images of the former are shown in Fig.…”

Section: Stm Imaging Of Fullerenes: An Overviewmentioning

confidence: 99%

“…In 2005, Wachowiak et al [5] used the technique to obtain remarkable images of C 60 molecules co-deposited onto a gold surface with potassium. They found that K doping produced discrete domains corresponding to monolayers with stoichiometries K 3 C 60 and K 4 C 60 .…”

Section: Introductionmentioning

confidence: 99%

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Jahn–Teller Effects in Molecules on Surfaces with Specific Application to C60

Hands

Dunn

Rawlinson

et al. 2009

Springer Series in Chemical Physics

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A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. Abstract Scanning tunnelling microscopy (STM) is capable of imaging molecules adsorbed onto surfaces with sufficient resolution as to permit intramolecular features to be discerned. Therefore, imaging molecules subject to the Jahn-Teller (JT) effect could, in principle, yield valuable information about the vibronic coupling responsible for the JT effect. However, such an application is not without its complications. For example, the JT effect causes subtle, dynamic distortions of the molecule; but how will this dynamic picture be affected by the host surface? And what will actually be imaged by the rather slow STM technique? Our aim here is to present a systematic investigation of the complications inherent in JT-related STM studies, to seek out possible JT signatures in such images and to guide further imaging towards identification and quantification of JT effects in molecules on surfaces. In particular, we consider the case of surface-adsorbed C 60 ions because of their propensity to exhibit JT effects, their STM-friendly size and because a better understanding of the vibronic effects within these ions may be important for realisation of their potential application as superconductors.

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Section: Effects Of Surface Interaction On Stm Imagessupporting

confidence: 65%

Section: Discussionmentioning

confidence: 96%

Section: Stm Imaging Of Fullerenes: An Overviewmentioning

confidence: 99%

“…7. In a later work [5], they studied an insulating phase K 4 C 60 and compared it to a conducting layer K 3 C 60 . For small biases, the images of the former are shown in Fig.…”

Section: Stm Imaging Of Fullerenes: An Overviewmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Jahn–Teller Effects in Molecules on Surfaces with Specific Application to C60

Hands

Dunn

Rawlinson

et al. 2009

Springer Series in Chemical Physics

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A Chemiluminescent Tetraaryl Diborane(4) Tetraanion

et al. 2021

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Two subvalent, redox‐active diborane(4) anions, [3]4− and [3]2−, carrying exceptionally high negative charge densities are reported: Reduction of 9‐methoxy‐9‐borafluorene with Li granules without stirring leads to the crystallization of the B(sp3)−B(sp2) diborane(5) anion salt Li[5]. [5]− contains a 2,2′‐biphenyldiyl‐bridged B−B core, a chelating 2,2′‐biphenyldiyl moiety, and a MeO substituent. Reduction of Li[5] with Na metal gives the Na+ salt of the tetraanion [3]4− in which two doubly reduced 9‐borafluorenyl fragments are linked via a B−B single bond. Comproportionation of Li[5] and Na4[3] quantitatively furnishes the diborane(4) dianion salt Na2[3], the doubly boron‐doped congener of 9,9′‐bis(fluorenylidene). Under acid catalysis, Na2[3] undergoes a formal Stone–Wales rearrangement to yield a dibenzo[g,p]chrysene derivative with B=B core. Na2[3] shows boron‐centered nucleophilicity toward n‐butyl chloride. Na4[3] produces bright blue chemiluminescence when exposed to air.

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