Abstract
Diffuse streaks centered at q=(0,(2/5,0) and (0,(1/2,0) have been observed in annealed Ba2YCu3O7- with 0.30.4, which has a Tc of 60 K and a Meissner effect equivalent to the 90 K phase. We interpret the presence of the diffuse streaking as a result of short-range oxygen vacancy ordering. The vacancy ordering has a short correlation length along the copper-oxygen chains (b direction) and a long correlation length perpendicular to the chains along the a direction. The ordered structure is completely uncorrelated parallel to the c axis.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2317-2319 |
| Number of pages | 3 |
| Journal | Physical Review B |
| Volume | 37 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1988 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics