Table 3 Sample dimensions and the calculated geometrical enhancement factor \(\mathscr{E}_M\) in the Meissner state from finite element simulations and the applied field, \(B_{\text{entry}}\), where entry into the bulk is expected.
From: Depth-resolved characterization of Meissner screening breakdown in surface treated niobium
Parameter | “Baseline” | “O-doping” |
|---|---|---|
a (mm) | 1.8 | 1.7 |
b (mm) | 9.8 | 12.4 |
c (mm) | 8.1 | 12.6 |
\(\mathscr{E}_M\) | 1.081 | 1.043 |
\(B_{\text{entry}}\) (mT) @ 4.5 K | 113 | 123 |
