Single-gap superconductivity in β- Bi2Pd

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Show simple item record Kačmarčík, J. Pribulová, Z. Samuely, T. Szabó, P. Cambel, V. Šoltýs, J. Herrera, E. Suderow, Hermann J. Correa-Orellana, A. Prabhakaran, D. Samuely, P.
dc.contributor.other UAM. Departamento de Física de la Materia Condensada es_ES 2017-03-14T12:09:28Z 2017-03-14T12:09:28Z 2016-04-05
dc.identifier.citation Physical Review B - Condensed Matter and Materials Physics 93.14 (2016): 144502 es_ES
dc.identifier.issn 2469-9950 (print) es_ES
dc.identifier.issn 2469-9969 (online) es_ES
dc.description.abstract The β-Bi2Pd compound has been proposed as another example of a multigap superconductor [Imai et al., J. Phys. Soc. Jpn. 81, 113708 (2012)]. Here, we report on measurements of several important physical quantities capable of showing a presence of multiple energy gaps on our superconducting single crystals of β-Bi2Pd with the critical temperature Tc close to 5 K. The calorimetric study via a sensitive ac technique shows a sharp anomaly at the superconducting transition, however only a single energy gap is detected. Also other characteristics inferred from calorimetric measurements as the field dependence of the Sommerfeld coefficient and the temperature and angular dependence of the upper critical magnetic field point unequivocally to standard single s-wave gap superconductivity. The Hall-probe magnetometry provides the same result from the analysis of the temperature dependence of the lower critical field. A single-gapped BCS density of states is detected by the scanning tunneling spectroscopy measurements. Then, the bulk as well as the surface sensitive probes evidence a standard conventional superconductivity in this system where the topologically protected surface states have been recently detected by angle-resolved photoemission spectroscopy [Sakano et al., Nat. Commun. 6, 8595 (2015).] es_ES
dc.description.sponsorship This work was supported by the Slovak projects APVV-0036-11, APVV-14-0605, VEGA 2/0149/16, VEGA 1/0409/15, by the ERDF EU grant under contract No. ITMS26220120005 and the COST action MP1201 as well as by the U.S. Steel Kosice. Sample growth was partially supported by the projects No. FIS2014-54498-R (MINECO, Spain) and No. S2013/MIT-2850 Nanofrontmag-CM (Region of Madrid, Spain) and by the Engineering and Physical Sciences Research Council, UK. E.H. acknowledges support from the Grant No. 560-2012 programa de doctorados en el exterior (COLCIENCIAS) es_ES
dc.format.extent 7 pag. es_ES
dc.format.mimetype application/pdf es_ES
dc.language.iso eng es_ES
dc.publisher American Physical Society es_ES
dc.relation.ispartof Physical Review B - Condensed Matter and Materials Physics es_ES
dc.rights © 2016 American Physical Society es_ES
dc.subject.other Single-gap es_ES
dc.subject.other Superconductivity es_ES
dc.title Single-gap superconductivity in β- Bi2Pd es_ES
dc.type article es_ES
dc.subject.eciencia Física es_ES
dc.relation.publisherversion es_ES
dc.identifier.doi 10.1103/PhysRevB.93.144502 es_ES
dc.identifier.publicationfirstpage 144502 es_ES
dc.identifier.publicationissue 14 es_ES
dc.identifier.publicationlastpage 144502 es_ES
dc.identifier.publicationvolume 93 es_ES
dc.relation.projectID Gobierno de España. FIS2014-54498-R es_ES
dc.relation.projectID Comunidad de Madrid. S2013/MIT-2850/NANOFRONTMAG-CM es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.rights.accessRights openAccess es_ES
dc.authorUAM Suderow Rodríguez, Hermann Jesús (281163)

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