Superconductivity at 23 K and Low Anisotropy in Rb-Substituted BaFe_2As_2 Single Crystals

Simple item page
dc.creatorBukowski, Z.
dc.creatorWeyeneth, S.
dc.creatorPuzniak, R.
dc.creatorMoll, P.
dc.creatorKatrych, S.
dc.creatorZhigadlo, N. D.
dc.creatorKarpinski, J.
dc.creatorKeller, H.
dc.creatorBatlogg, B.
dc.date2009-02-27
dc.date2009-03-24
dc.date.accessioned2026-07-07T13:00:35Z
dc.date.available2026-07-07T13:00:35Z
dc.descriptionSingle crystals of Ba_{1-x}Rb_{x}Fe_2As_2 with x=0.05-0.1 have been grown from Sn flux and are bulk superconductors with T_c up to 23 K. The crystal structure was determined by X-ray diffraction analysis, and Sn is found to be incorporated for 9% Ba, shifted by 1.1 Angstroem away from the Ba site towards the (Fe_2As_2)-layers. The upper critical field deduced from resistance measurements is anisotropic with slopes of 7.1(3) T/K (H || ab-plane) and 4.2(2) T/K (H || c-axis), sufficiently far below T_c. The extracted upper critical field anisotropy of 3 close to T_c, is in good agreement with the estimate from magnetic torque measurements. This indicates that the electronic properties in the doped BaFe_2As_2 compound are significantly more isotropic than those in the LnFeAsO family. The in-plane critical current density at 5 K exceeds 10^6 A/cm^2, making Ba_{1-x}Rb_xFe_2As_2 a promising candidate for technical applications.
dc.descriptionaccepted for publication in Phys. Rev. B (9 pages, 11 figures)
dc.identifierhttps://arxiv.org/abs/0903.0004
dc.identifierhttp://arxiv.org/abs/0903.0004
dc.identifierPhys. Rev. B 79, 104521 (2009)
dc.identifierdoi:10.1103/PhysRevB.79.104521
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/225884
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleSuperconductivity at 23 K and Low Anisotropy in Rb-Substituted BaFe_2As_2 Single Crystals
dc.typetext

Files

Collections

arXiv