Imaging the dynamics of individually adsorbed molecules

Schaffert, Johannes; Cottin, M. C.; Sonntag, A.; Karacuban, Hatice; Bobisch, C. A.; Lorente, Nicolás; Gauyacq, J.P.; Möller, R.

doi:10.1038/nmat3527

Cited by 83 publications

(114 citation statements)

References 30 publications

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“…Here, we considerably expand the initial analysis of Ref. 15 by showing the interplay between the local hybridization of the relevant molecular orbitals with the substrate and the spatial dependence of the rotational excitation. We further complete the initial calculations and give a thorough exposition of the scattering theory, permitting us to have extra insight of the excitation process as well as the molecular dynamics induced by the tunneling electrons.…”

Section: Introductionmentioning

confidence: 82%

“…Our previous experimental and theoretical work 15 shows that the tunneling current induces a frustrated rotational motion of CuPc molecules on Cu(111). An in-plane molecular axis changes by ∼7…”

Section: Studied Systemmentioning

confidence: 95%

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] This breakthrough in fundamental science and in nanotechnology has stirred a lot of attention as it became possible to manipulate adsorbates and to induce reactions on the atomic scale. On the one hand, these tunneling experiments provide perfect toy systems to learn chemical rules; 16,17 on the other hand, promising bottom-up techniques for creating nanometer-scaled devices become feasible.…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, rotational excitation is closer to magnetic excitations than to vibrational excitations. 15,[25][26][27] By studying the telegraph noise observed in the tunneling current, Schaffert and co-workers 15 have recently reported on the frustrated rotation of single copper phthalocyanine (CuPc) molecules on Cu(111), excited by the tunneling current. Here, we present a theoretical account of this rotational excitation process.…”

Section: Introductionmentioning

confidence: 99%

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Tunneling electron induced rotation of a copper phthalocyanine molecule on Cu(111)

et al. 2013

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The rates of a hindered molecular rotation induced by tunneling electrons are evaluated using scattering theory within the sudden approximation. Our approach explains the excitation of copper phthalocyanine molecules (CuPc) on Cu(111) as revealed in a recent measurement of telegraph noise in a scanning tunneling microscopy experiment [Schaffert et al., Nat. Mater. 12, 223 (2013)]. A complete explanation of the experimental data is performed by computing the geometry of the adsorbed system, its electronic structure, and the energy transfer between tunneling electrons and the molecule's rotational degree of freedom. The results unambiguously show that tunneling electrons induce a frustrated rotation of the molecule. In addition, the theory determines the spatial distribution of the frustrated rotation excitation, confirming the striking dominance of two out of four molecular lobes in the observed excitation process. This lobe selectivity is attributed to the different hybridizations with the underlying substrate.

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Section: Introductionmentioning

confidence: 82%

Section: Studied Systemmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tunneling electron induced rotation of a copper phthalocyanine molecule on Cu(111)

et al. 2013

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“…11 Both types of molecules are available in many different modifications. Various experiments involving those molecules were performed, e.g., the self-assembly on metallic surfaces 12,13 or the development of functional single molecule devices such as rotors [14][15][16][17] or switches 18,19 was studied.…”

Section: Introductionmentioning

confidence: 99%

Communication: Substrate induced dehydrogenation: Transformation of octa-ethyl-porphyrin into tetra-benzo-porphyrin

Vörden

Lange

Schmuck

et al. 2013

The Journal of Chemical Physics

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Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of 47048 Duisburg, Germany (Received 27 March 2013; accepted 29 May 2013; published online 7 June 2013) Individual molecules of octa-ethyl-porhphyrin-iron(III)-chloride adsorbed on a Cu(111) surface are studied by scanning tunneling microscopy. Upon moderate heating the molecules are found to transform into Fe-tetra-benzo-porphyrin at a surprisingly low temperature of 380 K. If the annealing is interrupted, the different steps of the transformation can be imaged. By evaluating the ratio of transformed molecules as function of annealing temperature, an approximate activation energy of 1.2 eV ± 0.1 eV could be determined. © 2013 AIP Publishing LLC.

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Controlled Manipulation of Single Atoms and Small Molecules Using the Scanning Tunneling Microscope

Morgenstern¹,

Lorente²,

Rieder³

2016

Surface and Interface Science

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Imaging the dynamics of individually adsorbed molecules

Cited by 83 publications

References 30 publications

Tunneling electron induced rotation of a copper phthalocyanine molecule on Cu(111)

Tunneling electron induced rotation of a copper phthalocyanine molecule on Cu(111)

Communication: Substrate induced dehydrogenation: Transformation of octa-ethyl-porphyrin into tetra-benzo-porphyrin

Controlled Manipulation of Single Atoms and Small Molecules Using the Scanning Tunneling Microscope

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