Journal Article

FZJ-2021-00461

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Extreme high-field superconductivity in thin Re films

Womack, F. N. (Corresponding author) ; Young, D. P. ; Browne, D. A. ; Catelani, G. (Corresponding author)FZJ* ; Jiang, J. ; Meletis, E. I. ; Adams, P. W.

2021
APS Woodbury, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/26837  doi:10.1103/PhysRevB.103.024504

Abstract: We 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.

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Contributing Institute(s):

1. JARA Institut Quanteninformation (PGI-11)

Research Program(s):

1. 5222 - Exploratory Qubits (POF4-522) (POF4-522)

Appears in the scientific report 2021

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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