Answers are grounded in this paper and cite their sources.
We have observed superconductivity in the ladder material Sr 0.4 Ca 13.6 Cu 24 O 41.84 under pressures of 3 GPa and 4.5 GPa by means of electrical measurements. The superconducting transition temperatures T c (onset) are 12 K and 9 K at 3 and 4.5 GPa, respectively. The superconducting volume fraction was obtained to be about 5% from magnetization measurement under 3.5 GPa at 4.2 K, indicating the bulk nature of the superconductivity in this system.
No takes yet. Share an insight, caveat, or question.
Uehara et al. (1996) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: