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@ARTICLE{Womack:889853,
author = {Womack, F. N. and Young, D. P. and Browne, D. A. and
Catelani, G. and Jiang, J. and Meletis, E. I. and Adams, P.
W.},
title = {{E}xtreme high-field superconductivity in thin {R}e films},
journal = {Physical review / B},
volume = {103},
number = {2},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {APS},
reportid = {FZJ-2021-00461},
pages = {024504},
year = {2021},
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.},
cin = {PGI-11},
ddc = {530},
cid = {I:(DE-Juel1)PGI-11-20170113},
pnm = {5222 - Exploratory Qubits (POF4-522)},
pid = {G:(DE-HGF)POF4-5222},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000606324100004},
doi = {10.1103/PhysRevB.103.024504},
url = {https://juser.fz-juelich.de/record/889853},
}