Quest for amorphous superconductors of Bi-Sb alloys by irradiation with swift heavy ions

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dc.contributor.authorAndrino-Gómez, Alberto
dc.contributor.authorTabares, Gema
dc.contributor.authorMoratalla, Manuel
dc.contributor.authorRedondo-Cubero, Andrés
dc.contributor.authorMadurga Pérez, Vicente
dc.contributor.authorFavieres Ruiz, Cristina
dc.contributor.authorVergara Platero, José
dc.contributor.authorGarcía-López, Gastón
dc.contributor.authorGordillo, Nuria
dc.contributor.authorRamos, Miguel Ángel
dc.contributor.departmentCienciases_ES
dc.contributor.departmentZientziakeu
dc.contributor.departmentInstitute for Advanced Materials and Mathematics - INAMAT2en
dc.date.accessioned2025-03-24T17:06:05Z
dc.date.available2025-03-24T17:06:05Z
dc.date.issued2025-03-17
dc.date.updated2025-03-24T16:43:28Z
dc.description.abstractCrystalline Bi100−xSbx alloys are known as the first discovered topological insulators, as well as for their promising thermoelectric properties, while their amorphous counterparts exhibit superconductivity (Tc > 6 K). However, their strong tendency to crystallize has hindered both the study and practical applications of amorphous Bi and Bi–Sb alloys. To explore the possibility of obtaining amorphous superconducting phases and enhancing thermoelectric properties, we investigated ion-beam irradiation as a method to induce amorphization in Bi100−xSbx alloys. We report irradiation experiments on pure Bi and Bi100−xSbx using bismuth and iodine ions (tens of MeV), generating an estimated vacancy damage of 40%–80%. Structural characterization and electrical resistivity measurements (2–300 K) revealed that, while amorphization and superconductivity were not achieved, melt-spun samples exhibited an order of magnitude higher conductivity than thermally evaporated ones. Moreover, ion-induced disorder further improved electrical conductivity, particularly in Bi90Sb10, highlighting its potential for thermoelectric applications.en
dc.description.sponsorshipFinancial support from the Spanish Ministry of Science, Innovation and Universities (MCIN/AEI/10.13039/501100011033) through the grant No. PID2021-127498NB-I00 and within the 'María de Maeztu' Program for Units of Excellence in R&D (No. CEX2023-001316-M).
dc.format.mimetypeapplication/pdfen
dc.identifier.citationAndrino-Gómez, A., Tabares, G., Moratalla, M., Redondo-Cubero, A., Madurga, V., Favieres, C., Vergara, J., García-López, G., Gordillo, N., Ramos, M. Á. (2025) Quest for amorphous superconductors of Bi-Sb alloys by irradiation with swift heavy ions. Journal of Applied Physics, 137(11), 1-15. https://doi.org/10.1063/5.0255782.
dc.identifier.doi10.1063/5.0255782
dc.identifier.issn0021-8979
dc.identifier.urihttps://academica-e.unavarra.es/handle/2454/53802
dc.language.isoeng
dc.publisherAIP Publishing
dc.relation.ispartofJournal of Applied Physics, 137(11), 115102 (2025)
dc.relation.projectIDinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-127498NB-I00/ES/
dc.relation.publisherversionhttps://doi.org/10.1063/5.0255782
dc.rights© 2025 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC) license.
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/
dc.subjectElectrical conductivityen
dc.subjectElectrical resistivityen
dc.subjectSuperconductorsen
dc.subjectX-ray diffractionen
dc.subjectSwift heavy ionen
dc.subjectScanning electron microscopyen
dc.subjectIon beam analysisen
dc.subjectThermoelectric effectsen
dc.subjectBismuthen
dc.titleQuest for amorphous superconductors of Bi-Sb alloys by irradiation with swift heavy ionsen
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
relation.isAuthorOfPublicatione34fdb18-7964-48c4-9f13-7907aeecf71b
relation.isAuthorOfPublicationafa457bc-4ccc-417d-b2fc-7dfe3c82659b
relation.isAuthorOfPublicationf0c35817-f6f6-47de-8cb1-2ecbf5d82306
relation.isAuthorOfPublication.latestForDiscoverye34fdb18-7964-48c4-9f13-7907aeecf71b

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