TY  - JOUR
AU  - Adams, P. W.
AU  - Nam, H.
AU  - Shih, C. K.
AU  - Catelani, Gianluigi
TI  - Zeeman-limited superconductivity in crystalline Al films
JO  - Physical review / B
VL  - 95
SN  - 0163-1829
CY  - Woodbury, NY
PB  - Inst.
M1  - FZJ-2017-02516
SP  - 094520
PY  - 2017
AB  - We report the evolution of the Zeeman-mediated superconducting phase diagram (PD) in ultrathin crystalline Al films. Parallel critical field measurements, down to 50 mK, were made across the superconducting tricritical point of films ranging in thickness from 7 to 30 ML. The resulting phase boundaries were compared with the quasiclassical theory of a Zeeman-mediated transition between a homogeneous BCS condensate and a spin-polarized Fermi liquid. Films thicker than ∼20ML showed good agreement with theory, but thinner films exhibited an anomalous PD that cannot be reconciled within a homogeneous BCS framework.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000399139500004
DO  - DOI:10.1103/PhysRevB.95.094520
UR  - https://juser.fz-juelich.de/record/828614
ER  -