Reported Tc Timeline

Reported transition temperature versus year, with the date basis, result origin, sample state, pressure, and source retained for each result. Marker colours identify families; symbols identify origins. This is neither a discovery-history chronology nor a world-record leaderboard. Legacy reports are not independently confirmed results.

Reviewed-only mode is unavailable until accepted result-level reviews exist. “Observed only” selects a reported result origin, not experimental confirmation or scientific approval.

All Cuprate Iron-based Nickelate Hydride MgB₂ Heavy fermion Fulleride Elemental Conventional

Observed only APS sources only

Display sample:Up to 2,000 results Up to 10,000 results

The larger display takes longer to load. Coverage counts and reported record summaries use the full eligible selection in both views; sampling limits are shown below.

Full filtered dataset · before display sampling

202 reported results · 96 materials · 97 linked sources

Sources count distinct bibliographic identifiers, not independent works or independent replications.

Reported Tc range: 0.01 K (10 mK) – 98 K. These are extrema in this filtered dataset, not world-record claims or independently confirmed Tc values.

Inspect full-data coverage groups

Family

nickelate: 202

Result origin

Computed: 36
Observed: 161
Unknown: 5

Year basis

legacy record year unspecified: 202

Pressure state

ambiguous: 34
not reported: 111
reported: 57

Highest reported Tc in this filtered dataset (not a world-record claim)

1 shown of 1 tied results. These full-data extrema may be absent from the display sample; no scientific acceptance is asserted.

La0.6Nd2.4Ni2O7 · 98 K · 2025 (legacy record year unspecified) · criterion: onset · Observed · primary source role · arxiv:2510.12359 · Material details
legacy-timeline-result:6bbce4e7e57f076be081934bdb71f108e7ec81210986359d523b217bf5db0272 · Catalogue eligible — not scientific approval

Unsampled response selection: 202 returned results from 202 eligible reported results. Method: complete. This display selection is not a statistically representative sample or an ML dataset.

Selected before pagination: 202. Strata represented: 13 / 13; omitted rare groups: 0. Policy: timeline-stratified/1.0.0.

● Observed○ Computed◇ Inferred / AI-Proposed× Unknown / conflict□ Mixed origins

Temperature view

Markers describe reported result origin, not scientific approval. Catalogue eligibility is governed separately; each hover includes its visibility status. Exact year/Tc overlaps are display clusters only: no results are merged. Click a marker or use the overlap selector below to inspect every received member. Server sampling may omit additional results at the same coordinates; cluster counts refer to this received selection. Years are not jittered.

Rendering chart… The table is available below.

Inspectable reported results

All 202 received results are available here, including coordinate overlaps and results omitted by the SVG renderer budget. This table does not include results omitted by server sampling. Linked sources count bibliographic identifiers, not independent works. An occurrence count is not independent replication; legacy records remain unreviewed.

Overlap group

202 received reported results · page 1 of 9
Material / result	Reported Tc	Year / basis	Pressure	Origin / role	Source / provenance	Governance
LaNiAsO legacy-timeline-result:dca3d66399b71a055f6e463819d9c36969fc8d1037aef24ac7307b30513c17d9#	1.8 K Criterion: onset	2008 legacy record year unspecified Source date: 2008-08-18 (publication)	Pressure not reported	Observed · primary source role	aps:10.1103/PhysRevB.78.060504 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "LaNiAsO", "sample_form": "polycrystal" }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
La₃Ni₄P₄O₂ legacy-timeline-result:dbc7504e48b411e863a9362e06212d45efec10d33e8a43107e6652c1d5d56d23#	2.2 K Criterion: unknown	2008 legacy record year unspecified Source date: 2008-08-11 (publication)	Pressure not reported	Observed · primary source role	arxiv:0808.1557 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "La3Ni4P4O2" }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
LaNiOAs legacy-timeline-result:9a5cb9e7c369bb91799f870d18120f0ef11d7e41ae211d2bf68da1f265dd3c26#	2.4 K Criterion: unknown	2008 legacy record year unspecified Source date: 2008-05-28 (publication)	Pressure not reported	Observed · primary source role	arxiv:0805.4340 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "LaNiOAs", "sample_form": "powder" }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
LaNiOAs legacy-timeline-result:acd238f40b004c7aa74cc5dfc80d9fc11c5af5e0efc0ebda8b1b4ef60fdc58f5#	2.4 K Criterion: unknown	2008 legacy record year unspecified Source date: 2008-05-28 (publication)	Pressure not reported	Observed · primary source role	arxiv:0805.4340 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "LaNiOAs", "sample_form": "powder" }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
LaNiAsO legacy-timeline-result:389530142cfb8819cc947487f26e83bbd2af7cbfa6ba105772498580e3b74ca4#	2.75 K Criterion: onset	2008 legacy record year unspecified Source date: 2008-08-18 (publication)	Pressure not reported	Observed · primary source role	aps:10.1103/PhysRevB.78.060504 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "LaNiAsO", "sample_form": "polycrystal" }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
LaONiAs legacy-timeline-result:5009e49d95ea5d2473cbc650a3d0d64553123d573b676ef2b331a38d5b659a2c#	2.75 K Criterion: onset	2008 legacy record year unspecified Source date: 2008-03-18 (publication)	Pressure unresolved	Observed · primary source role	arxiv:0803.2572 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "LaONiAs" }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
LaONiAs legacy-timeline-result:c0d5085fb62fd5f9fdc32ac20a43f21cecfafe5922538f961ec84220c26eabc8#	2.75 K Criterion: unknown	2008 legacy record year unspecified Source date: 2008-03-31 (publication)	Pressure unresolved	Observed · primary source role	arxiv:0803.4384 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "LaONiAs" }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
LaONiAs legacy-timeline-result:5549642203dbcda31615737dc1b6b5be68cea149520e2c7010deec28b2f2ca37#	2.75 K Criterion: unknown	2008 legacy record year unspecified Source date: 2008-03-18 (publication)	Pressure unresolved	Observed · primary source role	arxiv:0803.2572 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "LaONiAs" }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
La_0.8Sr_0.2NiAsO legacy-timeline-result:70bc7c1dd6de35dafcd1231f9a5bcd234b4d351d6f7a99b6eb8fa6b32c2c4b4f#	3.5 K Criterion: unknown	2008 legacy record year unspecified Source date: 2008-10-08 (publication)	Pressure unresolved	Observed · primary source role	arxiv:0810.1418 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "La0.8Sr0.2NiAsO", "sample_form": "polycrystal", "doping_type": "hole", "doping_level": 0.2 }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
La_0.8Sr_0.2NiAsO legacy-timeline-result:fd9937bfd9f914bfcfa251edaf78e569715a3fd2ddd9a478001dbc3e479d02a6#	3.5 K Criterion: zero_resistance	2008 legacy record year unspecified Source date: 2008-09-30 (publication)	Pressure not reported	Observed · primary source role	aps:10.1103/PhysRevB.78.104528 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "La0.8Sr0.2NiAsO", "sample_form": "polycrystal", "doping_type": "hole", "doping_level": 0.2 }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
La_0.8Sr_0.2ONiAs legacy-timeline-result:c509b25924c56385ab43f2bd203f817d7c2965119488e1230a6850fe1c03bff6#	3.5 K Criterion: zero_resistance	2008 legacy record year unspecified Source date: 2008-03-27 (publication)	Pressure unresolved	Observed · primary source role	arxiv:0803.3978 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "La0.8Sr0.2ONiAs", "sample_form": "polycrystal", "doping_type": "hole", "doping_level": 0.2 }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
La_0.9Sr_0.1ONiAs legacy-timeline-result:dac66491d7fb2cb04f90d18e1b35769a826266fe26d117c86c13a63eeb63dd27#	3.7 K Criterion: zero_resistance	2008 legacy record year unspecified Source date: 2008-03-27 (publication)	Pressure unresolved	Observed · primary source role	arxiv:0803.3978 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "La0.9Sr0.1ONiAs", "sample_form": "polycrystal", "doping_type": "hole", "doping_level": 0.1 }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
La_0.9Sr_0.1NiAsO legacy-timeline-result:7caa63cc403fb8502bb235972f7f36076574cb2640d0b64e8f1dcafeca9b9271#	3.7 K Criterion: unknown	2008 legacy record year unspecified Source date: 2008-10-08 (publication)	Pressure unresolved	Observed · primary source role	arxiv:0810.1418 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "La0.9Sr0.1NiAsO", "sample_form": "polycrystal", "doping_type": "hole", "doping_level": 0.1 }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
La_0.9Sr_0.1NiAsO legacy-timeline-result:85694d87181caf7cafcfa818c00514ac2d33afc4490c5d7e5cfabb4c6c547459#	3.7 K Criterion: zero_resistance	2008 legacy record year unspecified Source date: 2008-09-30 (publication)	Pressure not reported	Observed · primary source role	aps:10.1103/PhysRevB.78.104528 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "La0.9Sr0.1NiAsO", "sample_form": "polycrystal", "doping_type": "hole", "doping_level": 0.1 }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
LaO_0.94F_0.06NiAs legacy-timeline-result:da4728bce87e63ed9d9c5a04f6efa97853dba8101d262f54fd0c6d5b588f981d#	3.78 K Criterion: unknown	2008 legacy record year unspecified Source date: 2008-03-18 (publication)	Pressure unresolved	Observed · primary source role	arxiv:0803.2572 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "LaO0.94F0.06NiAs", "doping_type": "electron", "doping_level": 0.06 }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
LaNiAsO_0.94F_0.06 legacy-timeline-result:4f77fce61468ba2e9c3dd269d839a2c511adf8c32000d459f21bfde34bf116bb#	3.78 K Criterion: unknown	2008 legacy record year unspecified Source date: 2008-08-18 (publication)	Pressure not reported	Observed · primary source role	aps:10.1103/PhysRevB.78.060504 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "LaNiAsO0.94F0.06", "sample_form": "polycrystal" }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
LaO_0.9F_0.1NiAs legacy-timeline-result:c85e11cb7ff0b426960c511da8129f82fffa894b4bcc7d1faa4d1a4bba8c87c2#	3.8 K Criterion: unknown	2008 legacy record year unspecified Source date: 2008-03-18 (publication)	Pressure unresolved	Observed · primary source role	arxiv:0803.2572 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "LaO0.9F0.1NiAs", "doping_type": "electron", "doping_level": 0.1 }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
LaO_0.9F_0.1NiAs legacy-timeline-result:129685a62a97fb23b50f689e2b0e1c5ad844efdd297863d7e8aa02a252fb42a1#	3.8 K Criterion: unknown	2008 legacy record year unspecified Source date: 2008-03-27 (publication)	Pressure unresolved	Observed · primary source role	arxiv:0803.3978 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "LaO0.9F0.1NiAs", "doping_type": "electron", "doping_level": 0.1 }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
LaNiAsO_0.9F_0.1 legacy-timeline-result:a6d99986cbfbba0e25da7e8c655ec3cceaf78b4cdc5c461e3e9e5df4a20d0299#	3.8 K Criterion: onset	2008 legacy record year unspecified Source date: 2008-08-18 (publication)	Pressure not reported	Observed · primary source role	aps:10.1103/PhysRevB.78.060504 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "LaNiAsO0.9F0.1", "sample_form": "polycrystal" }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
LaO_0.9F_0.1NiAs legacy-timeline-result:52f8474db5b4d4db639b048b2333fda500a0db64d0604472522dc1a655f94eef#	3.8 K Criterion: unknown	2008 legacy record year unspecified Source date: 2008-03-18 (publication)	Pressure unresolved	Observed · primary source role	arxiv:0803.2572 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "LaO0.9F0.1NiAs", "doping_type": "electron", "doping_level": 0.1 }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
LaO_0.9F_0.1NiAs legacy-timeline-result:cfa99921a29187b0162987552efcc809d0f6b45c5a46002a056e6f6a85f05fee#	3.8 K Criterion: onset	2008 legacy record year unspecified Source date: 2008-03-18 (publication)	Pressure unresolved	Observed · primary source role	arxiv:0803.2572 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "LaO0.9F0.1NiAs", "doping_type": "electron", "doping_level": 0.1 }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
LaNiAsO_0.9F_0.1 legacy-timeline-result:acaa86365d07c09bde31b445791c764c4084391bc1d9f6ef6ffdc788a259b4c6#	3.8 K Criterion: onset	2008 legacy record year unspecified Source date: 2008-08-18 (publication)	Pressure not reported	Observed · primary source role	aps:10.1103/PhysRevB.78.060504 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "LaNiAsO0.9F0.1", "sample_form": "polycrystal" }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
LaO₁-δNiBi legacy-timeline-result:19237c23adf3b4fe27e5b42290f728300f363e09f4570b1b57df4d739e61ec10#	4 K Criterion: onset	2008 legacy record year unspecified Source date: 2008-04-29 (publication)	Pressure not reported	Observed · primary source role	arxiv:0804.4546 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "LaO1-δNiBi" }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
GdONiBi legacy-timeline-result:7224a61a3e731ac8cb0b0d54d4e8f1ac6fd2f870df89d4396e5a210944e8318d#	4.5 K Criterion: unknown	2008 legacy record year unspecified Source date: 2008-07-31 (publication)	Pressure not reported	Observed · primary source role	arxiv:0807.5045 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "GdONiBi" }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.
Gd_0.9Sr_0.1ONiBi legacy-timeline-result:da62508e5b9983152f41027d251cf919075ca153c3c4d5acb9497c9c3135351c#	4.7 K Criterion: unknown	2008 legacy record year unspecified Source date: 2008-07-31 (publication)	Pressure not reported	Observed · primary source role	arxiv:0807.5045 Result provenance and state Identity basis: legacy_occurrence_content Result revision: unavailable Source version: unavailable Source occurrences: 1 (not replication) { "state": { "formula": "Gd0.9Sr0.1ONiBi", "doping_type": "hole", "doping_level": 0.1 }, "source_locator": {} }	Catalogue eligible — not scientific approval Legacy result · unreviewed. No scientific acceptance asserted.