Abstract
We have measured 1/f resistance fluctuations at room temperature in YBa2Cu3Ox films as a function of oxygen content, x. The films were single phase, c-axis oriented and grown by pulsed organometallic-beam epitaxy on LaAlO3 substrates. In contrast to the monotonic increase of the film resistance with decreasing x, the normalized noise power was found to exhibit a sharp minimum at x=6.5. We attribute this behavior to vacancy creation in the Cu-O chains and discuss a simple model based on parallel conduction paths through both chains and planes.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 3679-3682 |
| Number of pages | 4 |
| Journal | Physical Review B |
| Volume | 49 |
| Issue number | 5 |
| DOIs | |
| State | Published - 1994 |
ASJC Scopus subject areas
- Condensed Matter Physics