Aggregated per-compound records: Tc, pairing, structure phase, competing orders, and literature coverage. Filters combine with AND semantics.
| Formula | Family | Tc max (K) | Tc ambient | Pairing | Phase | Flags | arXiv year | Papers | Tier | Data |
|---|---|---|---|---|---|---|---|---|---|---|
| RuSr2(Gd,Ce)2Cu2O10+δ | Cuprate | 40.0 | — | d-wave | Ru1222 | unconv | 2001 | 2 | T1 | 8/10 |
| Sr0.86Nd0.14CuO2 | Cuprate | 40.0 | 40.0 | — | cuprate_123 | ambient | 2003 | 2 | — | 8/10 |
| Sm1-xSrxNiO2 | Nickelate | 40.0 | 40.0 | — | 112 | ambientunconv | 2025 | 1 | — | 9/10 |
| YBa2Cu3O6.399 | Cuprate | 40.0 | — | d-wave | cuprate_214 | unconv | 2005 | 1 | T2 | 8/10 |
| FeTe1-xSex | Iron-based | 40.0 | — | — | — | ambientunconv | 2010 | 11 | T1 | 7/10 |
| YSr2Cu2.1Ru0.9O7.9 | Cuprate | 40.0 | 40.0 | d-wave | — | ambientunconv | 2007 | 1 | T1 | 9/10 |
| Li0.836Fe0.164(OH)Fe0.990Se | Iron-based | 40.0 | — | — | — | unconv | 2017 | 1 | T1 | 6/10 |
| CaCuO2/SrTiO3 | Cuprate | 40.0 | — | d-wave | infinite_layer | unconv | 2013 | 1 | T1 | 8/10 |
| Li0.838Fe0.162(OH)Fe0.989Se | Iron-based | 40.0 | — | — | — | unconv | 2017 | 1 | T1 | 6/10 |
| [(Fe,Al)(OH)2][FeSe]1.2 | Iron-based | 40.0 | 40.0 | — | — | ambientunconv | 2021 | 1 | T1 | 8/10 |
| YH3 | Hydride | 40.0 | — | — | — | 2009 | 1 | T1 | 5/10 |
| RuSr2Eu1.5Ce0.5Cu2O10 | Cuprate | 40.0 | 30.0 | d-wave | — | ambientunconv | 2006 | 5 | T1 | 9/10 |
| FeSC | Iron-based | 40.0 | — | s_pm | — | unconv | 2011 | 1 | T1 | 7/10 |
| Nb2CCl2 | — | 40.0 | — | — | — | 2022 | 1 | T1 | 4/10 |
| La1.9Ba0.1CuO4 | Cuprate | 40.0 | 38.0 | d-wave | cuprate_214 | ambientunconv | 1987 | 2 | T1 | 10/10 |
| La1.95CuO4 | Cuprate | 40.0 | 40.0 | d-wave | cuprate_214 | ambientunconv | 1987 | 1 | T1 | 10/10 |
| TlyNdSr2Cu3Ox | Cuprate | 40.0 | — | d-wave | — | unconv | 1989 | 1 | T1 | 7/10 |
| TlyPb0.5Pr2Sr2Cu2Ox | Cuprate | 40.0 | — | d-wave | — | unconv | 1989 | 1 | T1 | 7/10 |
| TlyPb0.5Sm2Sr2Cu2Ox | Cuprate | 40.0 | — | d-wave | — | unconv | 1989 | 1 | T1 | 7/10 |
| La2CuO4.011 | Cuprate | 40.0 | — | d-wave | — | unconv | 1995 | 1 | T1 | 7/10 |
| LaFeAsO0.7(F/H)0.3 | Iron-based | 40.0 | 40.0 | — | — | ambientunconv | 2021 | 1 | — | 8/10 |
| NdFeAsO0.7(F/H)0.3 | Iron-based | 40.0 | 40.0 | — | — | ambientunconv | 2021 | 1 | — | 8/10 |
| (Nd1-yRE'y)1-xEuxNiO2 | Nickelate | 40.0 | — | — | infinite_layer | unconv | 2025 | 1 | T1 | 7/10 |
| (Bi0.5Sr1.5)(Y1.15Ce0.85)Cu2O8-δ | Cuprate | 40.0 | 40.0 | d-wave | — | ambientunconv | 1994 | 1 | T1 | 9/10 |
| Ln2-xSrxCuO4 | Cuprate | 40.0 | 40.0 | — | — | ambientunconv | 2000 | 1 | — | 8/10 |
| Li2xBC3 | Conventional | 40.0 | — | — | — | 2020 | 1 | T1 | 6/10 |
| LiBC3 | Conventional | 40.0 | — | — | — | 2020 | 1 | T1 | 6/10 |
| (Tl,K)FexSe2 | Iron-based | 40.0 | — | — | — | unconv | 2010 | 2 | T1 | 6/10 |
| La1.90CuO4 | Cuprate | 40.0 | 40.0 | d-wave | cuprate_214 | ambientunconv | 1987 | 1 | T1 | 10/10 |
| Sr0.2La1.8CuO4 | Cuprate | 40.0 | — | d-wave | — | unconv | 1987 | 3 | T1 | 7/10 |
| CH4S2 | Hydride | 40.0 | — | — | — | 2022 | 1 | T1 | 6/10 |
| MgB | — | 40.0 | — | — | — | ambient | 2022 | 2 | T1 | 6/10 |
| La1.8Sr0.2Cu0.95Ag0.05O4 | Cuprate | 40.0 | — | d-wave | — | unconv | 1987 | 1 | T1 | 7/10 |
| TlNdSr2Cu2Ox | Cuprate | 40.0 | — | d-wave | — | unconv | 1989 | 1 | T1 | 7/10 |
| TlyNd2Sr2Cu3Ox | Cuprate | 40.0 | — | d-wave | — | unconv | 1989 | 1 | T1 | 7/10 |
| Gd1.2Ba1.8Cu3O7-δ | Cuprate | 40.0 | 40.0 | d-wave | cuprate_123 | ambientunconv | 2003 | 1 | T2 | 10/10 |
| GdSr2Ru0.8Cu2.2O8 | Cuprate | 40.0 | — | d-wave | — | unconv | 2003 | 1 | T2 | 7/10 |
| La0.7Y0.3FeAsO0.85F0.15 | Iron-based | 40.0 | — | — | 1111 | unconv | 2009 | 1 | T1 | 7/10 |
| Li1.8Fe2Se2(NH3)[Li(NH2)]0.5 | Iron-based | 40.0 | 40.0 | — | — | ambientunconv | 2012 | 1 | T1 | 8/10 |
| (La1-xSrx)2CuO4 | Cuprate | 40.0 | 39.0 | d-wave | cuprate_214 | ambientunconv | 1987 | 6 | T1 | 10/10 |
| Mg10B11B | MgB₂ | 39.9 | 39.9 | s-wave | — | ambient | 2001 | 1 | T2 | 9/10 |
| Na2SiPdH6 | Hydride | 39.8 | 39.8 | — | — | ambient | 2024 | 1 | — | 7/10 |
| CaB3 | Conventional | 39.8 | — | — | — | ambient | 2026 | 1 | T1 | 7/10 |
| GdSr2Ru0.95Cu2.05O8 | Cuprate | 39.5 | — | d-wave | — | unconv | 2003 | 1 | T2 | 7/10 |
| CeFeAsO0.65F0.35 | Iron-based | 39.5 | — | — | — | unconv | 2017 | 1 | T1 | 6/10 |
| Hg2(Ba0.85Sr0.15)2(Y0.80Ca0.20)Cu2O8-δ | Cuprate | 39.5 | 39.5 | d-wave | 2212 | ambientunconv | 2003 | 1 | T2 | 10/10 |
| CuN | Conventional | 39.3 | — | — | — | ambient | 2022 | 2 | T1 | 7/10 |
| Li6P | Conventional | 39.3 | — | — | — | 2018 | 3 | T1 | 7/10 |
| Li3CuH4 | Hydride | 39.3 | — | — | — | 2026 | 1 | T1 | 5/10 |
| Mg11B2 | MgB₂ | 39.2 | 38.7 | s-wave | — | ambient | 2001 | 9 | T1 | 9/10 |