Abstract
Patterned structures of LaAlO3/SrTiO3 that exhibit a decrease in their electrical conductivity below 30 K recover their higher conductivity upon warming in a thermally activated process. Two dominant energy barriers Eb are identified: Eb1=0.224±0.003 eV related to conductivity recovery near 70K and Eb2=0.44±0.015 eV related to conductivity recovery near 160K. We discuss possible linkage to structural defects such as dislocations and twin boundaries. © 2013 American Physical Society.
| Original language | English |
|---|---|
| Article number | 125110 |
| Pages (from-to) | 1-4 |
| Number of pages | 4 |
| Journal | Physical Review B |
| Volume | 87 |
| Issue number | 12 |
| DOIs | |
| State | Published - 8 Mar 2013 |