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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},
}