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Grant support

This research was supported by the Spanish Ministry of Economy and Competitiveness through Grants No. FIS2017-84860-R, No. PCI2018-093026, and No. PGC2018-097018-B-I00 (AEI/FEDER, EU) , the European Union's Horizon 2020 research and innovation programme under the FE-TOPEN Grant Agreement No. 828948 (AndQC) and the Maria de Maeztu Programme for Units of Excellence in R&D, Grant No. MDM-2014-0377.

Analysis of institutional authors

Escribano, SdAuthorYeyati, AlAuthorPrada, EAuthor

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February 7, 2022
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Fluxoid-induced pairing suppression and near-zero modes in quantum dots coupled to full-shell nanowires

Publicated to:PHYSICAL REVIEW B. 105 (4): 45418 - - 2022-01-24 105(4), DOI: 10.1103/PhysRevB.105.045418

Authors: Escribano, Samuel D; Yeyati, Alfredo Levy; Aguado, Ramon; Prada, Elsa; San-Jose, Pablo

Affiliations

Inst Ciencia Mat Madrid, Consejo Super Invest Cient ICMM CSIC, Madrid, Spain - Author
Univ Autonoma Madrid, Dept Fis Teor Mat Condensadil, Condensed Matter Phys Ctr IFIMAC, E-28049 Madrid, Spain - Author
Univ Autonoma Madrid, Inst Nicolas Cabrera, E-28049 Madrid, Spain - Author

Abstract

We analyze the subgap excitations and phase diagram of a quantum dot (QD) coupled to a semiconducting nanowire fully wrapped by a superconducting (S) shell. We take into account how a Little-Parks (LP) pairing fluxoid (a winding in the S phase around the shell) influences the proximity effect on the dot. We find that under axially symmetric QD-S coupling, shell fluxoids cause the induced pairing to vanish, producing instead a level renormalization that pushes subgap levels closer to zero energy and flattens fermionic parity crossings as the coupling strength increases. This fluxoid-induced stabilization mechanism has analoges in symmetric S-QD-S Josephson junctions at phase pi, and can naturally lead to patterns of near-zero modes weakly dispersing with parameters in all but the zeroth lobe of the LP spectrum.

Keywords

AndersonJosephsonMajorana fermionsSuperconductivityTransitionTransport

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal PHYSICAL REVIEW B due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2022, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Condensed Matter Physics. Notably, the journal is positioned above the 90th percentile.

From a relative perspective, and based on the normalized impact indicator calculated from the Field Citation Ratio (FCR) of the Dimensions source, it yields a value of: 5.25, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: Dimensions Jul 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2025-07-05, the following number of citations:

  • WoS: 4
  • Scopus: 5

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 2025-07-05:

  • 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: 7.
  • 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: 7 (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: 0.25.
  • 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://repositorio.uam.es/handle/10486/705919

Leadership analysis of institutional authors

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 (DIAZ ESCRIBANO, SAMUEL) .