Abstract
Systematic studies of the onset of superconductivity in ultrathin amorphous Ga films have revealed the existence of a threshold dependent only on the normal-state sheet resistance. Global superconductivity, or zero resistance, develops only when the normal-state sheet resistance falls below 6000 /-. This result agrees with previous observations on crystalline Sn films and further supports the notion of a universal resistance threshold.
Original language | English (US) |
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Pages (from-to) | 4920-4923 |
Number of pages | 4 |
Journal | Physical Review B |
Volume | 34 |
Issue number | 7 |
DOIs | |
State | Published - Jan 1 1986 |