July 5, 2020
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Article

Magnetization reversal assisted by half antivortex states in nanostructured circular cobalt disks

Publicated to: APPLIED PHYSICS LETTERS. 105 (18): 182402- - 2014-11-03 105(18), DOI: 10.1063/1.4900789

Authors:

Lara, A; Dobrovolskiy, OV; Prieto, JL; Huth, M; Aliev, FG
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Affiliations

Goethe Univ Frankfurt, Inst Phys, Frankfurt, Germany - Author
Univ Autonoma Madrid, Condensed Matter Phys Inst IFIMAC, Madrid, Spain - Author
Univ Autonoma Madrid, Dept Fis Mat Condensada, INC, E-28049 Madrid, Spain - Author
Univ Politecn Madrid, ISOM, E-28040 Madrid, Spain - Author
V Karazin Natl Univ, Dept Phys, Kharkov, Ukraine - Author
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Abstract

The half antivortex, a fundamental topological structure which determines magnetization reversal of submicron magnetic devices with domain walls, has been suggested also to play a crucial role in spin torque induced vortex core reversal in circular disks. Here, we report on magnetization reversal in circular disks with nanoholes through consecutive metastable states with half antivortices. In-plane anisotropic magnetoresistance and broadband susceptibility measurements accompanied by micromagnetic simulations reveal that cobalt (Co) disks with two and three linearly arranged nanoholes directed at 45 degrees and 135 degrees with respect to the external magnetic field show reproducible step-like changes in the anisotropic magnetoresistance and magnetic permeability due to transitions between different intermediate states mediated by vortices and half antivortices confined to the dot nanoholes and edges, respectively. Our findings are relevant for the development of multi-hole based spintronic and magnetic memory devices. (C) 2014 AIP Publishing LLC.
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Keywords

DefectsNanodisks

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal APPLIED PHYSICS LETTERS 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, 2014, it was in position 21/144, thus managing to position itself as a Q1 (Primer Cuartil), in the category Physics, Applied.

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 2026-04-26:

  • Google Scholar: 12
  • WoS: 23
  • Scopus: 25
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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 2026-04-26:

  • 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: 32.
  • 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: 32 (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: 1.
  • The number of mentions on the social network X (formerly Twitter): 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.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://oa.upm.es/35883/

As a result of the publication of the work in the institutional repository, statistical usage data has been obtained that reflects its impact. In terms of dissemination, we can state that, as of

  • Views: 429
  • Downloads: 316
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Leadership analysis of institutional authors

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

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Awards linked to the item

Authors acknowledge E. Begun and R. Sachser for their help in preparing test samples and J.M. de Teresa for discussions. This work has been supported by the Spanish MINECO (MAT2012-32743), ISOM-UPM and Comunidad de Madrid (S2013/MIT-2850). Computational capabilities of CCC-UAM (SVORTEX) and FPI-UAM fellowship (A. Lara) and also gratefully acknowledged.
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