Table 1 Characteristics of the different a-NbSi samples: composition x, thickness d, low temperature sheet resistance R4K evaluated at 4.2 K except for the 20-Å-thick sample for which they have been measured at 5 K.
From: Overactivated transport in the localized phase of the superconductor-insulator transition
Name | x (%) | d (Å) | R4K |
|---|---|---|---|
CKSAS43 α left | 13.5% | 20 | 111 GΩ |
CKSAS43 α right | 13.5% | 20 | n.d. |
CKSAS61 α left | 13.5% | 30 | 162 kΩ |
CKSAS61 α right | 13.5% | 30 | 151 kΩ |
CKSAS61 β left | 13.5% | 35 | 18.8 kΩ |
CKSAS61 β right | 13.5% | 35 | 17.8 kΩ |
CKSAS61 γ left | 13.5% | 40 | 10.8 kΩ |
CKSAS61 γ right | 13.5% | 40 | 10.5 kΩ |
CKSAS61 δ left | 13.5% | 45 | 7.73 kΩ |
CKSAS61 δ right | 13.5% | 45 | 7.50 kΩ |
CK8 γ | 9% | 125 | 53.3 kΩ |
CK9 γ | 9% | 125 | 52.6 kΩ |
CK9 β | 9% | 250 | 14.1 kΩ |
