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Analysis of institutional authors

Galvis, J. A.AuthorHerrera, E.AuthorVieira, S.AuthorGuillamon, I.AuthorSuderow, H.Author

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July 17, 2018
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Tilted vortex cores and superconducting gap anisotropy in 2H-NbSe2

Publicated to: Communications Physics. 1 (UNSP 30): UNSP 30- - 2018-12-01 1(UNSP 30), DOI: 10.1038/s42005-018-0028-1

Authors:

Galvis, JA; Herrera, E; Berthod, C; Vieira, S; Guillamón, I; Suderow, H
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Affiliations

Univ Autonoma Madrid, Lab Bajas Temp & Altos Campos Magnet, Unidad Asociada UAM CSIC,Ctr Condensed Matter Phy, Dept Fis Mat Condensada,Inst Ciencia Mat Nicolas, E-28049 Madrid, Spain - Author
Univ Cent, Fac Ingn & Ciencias Basicas, Bogota 110311, Colombia - Author
Univ Geneva, Dept Quantum Matter Phys, 24 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland - Author
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Abstract

The superconductor 2H-NbSe2 features vortices with a sixfold star shape when the magnetic field is applied perpendicular to the plane of the hexagonal crystal structure. This is due to the anisotropy in the quasi-two-dimensional Fermi surface tubes oriented along the c axis. But the properties of another, three-dimensional, pocket are unknown, in spite that it has a dominant contribution in many experiments. Here we measure vortices in tilted magnetic fields using a scanning tunneling microscope. We find patterns of stripes due to in-plane vortices and show how these change with the in-plane direction of the magnetic field. The shape of outgoing vortices is successfully compared with detailed calculations of vortex cores. Our data show that vortices exit at an angle with the surface and that the sixfold gap anisotropy is present over the whole Fermi surface.
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Keywords

FieldsFlux-line-latticeHigh-temperature superconductorsIi superconductorLayered superconductorsNbse2Scanning-tunneling-microscopeStatesUniaxial superconductorsVortices

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

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 2026-04-04:

  • WoS: 18
  • Scopus: 18
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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 2026-04-04:

  • 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: 48.
  • 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: 48 (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: 13.
  • The number of mentions on the social network X (formerly Twitter): 7 (Altmetric).
  • The number of mentions in news outlets: 1 (Altmetric).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
  • Additionally, the work has been submitted to a journal classified as Diamond in relation to this type of editorial policy.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://repositorio.uam.es/handle/10486/685174
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Leadership analysis of institutional authors

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

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (GALVIS ECHEVERRI, JOSE AUGUSTO) and Last Author (SUDEROW RODRIGUEZ, HERMANN JESUS).

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Awards linked to the item

We acknowledge discussions with V.G. Kogan and J.R. Kirtley. Work done in Madrid was supported by the Spanish Ministry of Economy and Competitiveness (FIS2014-54498-R, MDM-2014-0377), by the Comunidad de Madrid through program Nanofrontmag-CM (S2013/MIT-2850), by EU (European Research Council PNICTEYES grant agreement 679080, FP7-PEOPLE-2013-CIG 618321 and COST Action CA16218) and by Axa Research Fund. SEGAINVEX-UAM is also acknowledged. We also acknowledge the support of Departamento Administrativo de Ciencia, Tecnologa e Innovacin, COLCIENCIAS (Colombia) Programa Doctorados en el Exterior Convocatoria 568-2012 and the Cluster de investigacion en ciencias y tecnologias convergentes de la Universidad Central (Colombia). Work done in Geneva was supported by the Swiss National Science Foundation under Division II. Calculations were done in the University of Geneva with the clusters Mafalda and Baobab.
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