Compare · Superconductors
Tl2Ba2Ca2Cu3O10 (Tl-2223) vs YBa2Cu3O7−δ (YBCO)
RANKED BY CRITICAL TEMPERATURE TC AT AMBIENT PRESSURE (KELVIN)
#2 VS #4
CHECKED 06 SEPT 2026
Side by side
Verdict
Tl2Ba2Ca2Cu3O10 (Tl-2223) ranks #2 of 8 on Critical temperature Tc at ambient pressure (kelvin) (125 K); YBa2Cu3O7−δ (YBCO) ranks #4 (93 K).
Rank 02 of 8 · leads
Critical temperature Tc at ambient pressure (kelvin)
125 K
MakerParkin / IBM Almaden
Date1988
Verified04 Sept 2026
Evidence
Parkin, Lee, Engler, Nazzal, Huang, Gorman, Savoy, Beyers, Phys. Rev. Lett. 60, 2539 (1988): "Bulk superconductivity is reported in Tl2Ca2Ba2Cu3Ox with a transition to zero resistance at ≃125 K, the highest transition temperature (Tc) yet found." Widely replicated ambient-pressure cuprate; Tc 118–125 K depending on intergrowths.Rank 04 of 8
Critical temperature Tc at ambient pressure (kelvin)
93 K
MakerWu / Chu group
Date1987
Verified04 Sept 2026
Evidence
First superconductor above liquid-nitrogen temperature. Widely replicated ambient-pressure Tc ≈ 93 K for optimally doped YBCO. Cited here as the canonical 90 K-class cuprate against which Hg-1223 is compared in the 2025 npj Quantum Materials Hg-1223 paper.Try another pair
Source Peer-reviewed papers: Nature 365, 323 (1993); Phys. Rev. Lett. 60, 2539 (1988); Jpn. J. Appl. Phys. 27, L209 (1988); Chin. Phys. Lett. 25,…
Last checked 06 Sept 2026