{rfName}
At

Indexed in

License and use

Citations

8

Altmetrics

Grant support

We thank M. Herve, E. Constant and G. Karras for fruitful discussions. All calculations were performed at the Centro de Computacion Cientifica (CCC) of the Universidad Autonoma de Madrid and the MareNostrum supercomputer of the Red Espanola de Supercomputacion. We acknowledge support from CNRS, ANR-16-CE30-0012 'Circe', ANR-15-CE30-0001 'CIMBAAD', the Federation de recherche Andre Marie Ampere and the European COST Action AttoChem (CA18222). C.M.G.C., E.P., A.P. and F.M. are supported by the Ministerio de Ciencia e Innovacion (MICINN) project PID2019-105458RB-I00 and the Comunidad de Madrid project FULMATEN (ref. Y2018NMT-5028). F.M. acknowledges support from the 'Severo Ochoa' Programme for Centres of Excellence in R&D (CEX2020-001039-S) and the 'Maria de Maeztu' Programme for Units of Excellence in R&D (CEX2018-000805-M).

Analysis of institutional authors

Gonzalez-Collado, C MAuthorPalacios, AAuthorMartin, FAuthor

Share

Publications
>
Article

Attosecond metrology of the two-dimensional charge distribution in molecules

Publicated to:Nature Physics. 20 (5): 765-769 - 2024-02-23 20(5), DOI: 10.1038/s41567-024-02406-2

Authors: Loriot, V; Boyer, A; Nandi, S; Gonzalez-Collado, C M; Plesiat, E; Marciniak, A; Garcia, C L; Hu, Y; Lara-Astiaso, M; Palacios, A; Decleva, P; Martin, F; Lepine, F

Affiliations

CNR IOM, Trieste, Italy - Author
Inst Madrileno Estudios Avanzados Nanociencia IMDE, Madrid, Spain - Author
Univ Autonoma Madrid, Condensed Matter Phys Ctr IFIMAC, Madrid, Spain - Author
Univ Autonoma Madrid, Dept Quim, Modulo 13, Madrid, Spain - Author
Univ Autonoma Madrid, Inst Adv Res Chem Sci IAdChem, Madrid, Spain - Author
Univ Claude Bernard Lyon 1, Univ Lyon, Inst Lumiere Matiere, CNRS, Villeurbanne, France - Author
Univ Trieste, Dipartimento Sci Chim & Farmaceut, Trieste, Italy - Author
See more

Abstract

Photoionization as a half-scattering process is not instantaneous. Usually, time delays in photoionization are on the order of tens of attoseconds. In going from a single atom to a nano-object, one can expect the delay to increase, since the photoelectron scatters over a larger distance. Here we show that this intuition is not correct when comparing three-dimensional and planar molecules. Using attosecond interferometry, we find that the time delays in two-dimensional (2D) carbon-based molecules can be significantly shorter than those of three-dimensional counterparts. The measured time delay carries the signature of the spatial distribution of the 2D hole created in the residual molecular cation, allowing us to obtain its dimensions with angstrom accuracy. Our results demonstrate that the photoionization delay depends on the symmetry and shape of the created hole, as we show by identifying a quadrupole contribution in the measured delay of 2D molecules. Attosecond interferometry measurements of photoionization delays in planar carbon-based molecules can provide information on the dimension and shape of the two-dimensional hole generated in the process.

Keywords

ConvergenceDelaPhotoemissionPhotoionizationScatteringTime

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal Nature Physics due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2024 there are still no calculated indicators, but in 2023, it was in position 5/112, thus managing to position itself as a Q1 (Primer Cuartil), in the category Physics, Multidisciplinary. Notably, the journal is positioned above the 90th percentile.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2025-06-23:

  • WoS: 1
  • Scopus: 7
  • OpenCitations: 4

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2025-06-23:

  • The use, from an academic perspective evidenced by the Altmetric agency indicator referring to aggregations made by the personal bibliographic manager Mendeley, gives us a total of: 20.
  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 20 (PlumX).

With a more dissemination-oriented intent and targeting more general audiences, we can observe other more global scores such as:

  • The Total Score from Altmetric: 15.
  • The number of mentions on the social network X (formerly Twitter): 7 (Altmetric).
  • The number of mentions in news outlets: 1 (Altmetric).

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: France; Italy.