000889853 001__ 889853 000889853 005__ 20230426083225.0 000889853 0247_ $$2doi$$a10.1103/PhysRevB.103.024504 000889853 0247_ $$2ISSN$$a0163-1829 000889853 0247_ $$2ISSN$$a0556-2805 000889853 0247_ $$2ISSN$$a1050-2947 000889853 0247_ $$2ISSN$$a1094-1622 000889853 0247_ $$2ISSN$$a1095-3795 000889853 0247_ $$2ISSN$$a1098-0121 000889853 0247_ $$2ISSN$$a1538-4446 000889853 0247_ $$2ISSN$$a1538-4489 000889853 0247_ $$2ISSN$$a1550-235X 000889853 0247_ $$2ISSN$$a2469-9950 000889853 0247_ $$2ISSN$$a2469-9969 000889853 0247_ $$2ISSN$$a2469-9977 000889853 0247_ $$2Handle$$a2128/26837 000889853 0247_ $$2WOS$$aWOS:000606324100004 000889853 0247_ $$2altmetric$$aaltmetric:92470288 000889853 037__ $$aFZJ-2021-00461 000889853 082__ $$a530 000889853 1001_ $$0P:(DE-HGF)0$$aWomack, F. N.$$b0$$eCorresponding author 000889853 245__ $$aExtreme high-field superconductivity in thin Re films 000889853 260__ $$aWoodbury, NY$$bAPS$$c2021 000889853 3367_ $$2DRIVER$$aarticle 000889853 3367_ $$2DataCite$$aOutput Types/Journal article 000889853 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1648468157_12994 000889853 3367_ $$2BibTeX$$aARTICLE 000889853 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000889853 3367_ $$00$$2EndNote$$aJournal Article 000889853 520__ $$aWe report the high-field superconducting properties of thin, disordered Re films via magnetotransport and tunneling density of states measurements. Films with thicknesses in the range of 9 to 3 nm had normal-state sheet resistances of ∼0.2kΩ to ∼1kΩ and corresponding transition temperatures in the range of 6 to 3 K. Tunneling spectra were consistent with those of a moderate coupling BCS superconductor. Notwithstanding these unremarkable superconducting properties, the films exhibited an extraordinarily high upper critical field. We estimate their zero temperature Hc2 to be more than twice the Pauli limit. Indeed, in 6-nm samples the estimated reduced critical field Hc2/Tc∼5.6T/K is among the highest reported for any elemental superconductor. Although the sheet resistances of the films were well below the quantum resistance RQ=h/4e2, their Hc2's approached the theoretical upper limit of a strongly disordered superconductor for which kFℓ∼1. 000889853 536__ $$0G:(DE-HGF)POF4-5222$$a5222 - Exploratory Qubits (POF4-522)$$cPOF4-522$$fPOF IV$$x0 000889853 542__ $$2Crossref$$i2021-01-08$$uhttps://link.aps.org/licenses/aps-default-license 000889853 588__ $$aDataset connected to CrossRef 000889853 7001_ $$0P:(DE-HGF)0$$aYoung, D. P.$$b1 000889853 7001_ $$0P:(DE-HGF)0$$aBrowne, D. A.$$b2 000889853 7001_ $$0P:(DE-Juel1)151130$$aCatelani, G.$$b3$$eCorresponding author 000889853 7001_ $$0P:(DE-Juel1)156599$$aJiang, J.$$b4 000889853 7001_ $$0P:(DE-HGF)0$$aMeletis, E. I.$$b5 000889853 7001_ $$00000-0002-8412-0303$$aAdams, P. 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