Abstract
Stable and reproducible superconductivity has been unambiguously observed in a new Tl-Ba-Cu-O system containing no group-IIIB elements. Resistance in these rare-earth-free oxides starts to drop sharply above 90 K and reaches zero at 81 K. Meissner flux expulsion and diamagnetic shielding show bulk superconductivity. Further substitutions of elements for this system may lead to even higher-temperature superconductors.
Original language | American English |
---|---|
Pages (from-to) | 937-940 |
Number of pages | 4 |
Journal | Physical Review Letters |
Volume | 60 |
Issue number | 10 |
DOIs | |
State | Published - 1988 |
NREL Publication Number
- NREL/JA-5200-72010
Keywords
- resistance
- superconductivity