Contribution seq 25803

Payload

{
  "ops": [
    {
      "op": "CREATE_SOURCE",
      "ref": "ute2_narrowed_primary_support",
      "title": "Electrically controllable superconducting memory effect in UTe2",
      "publisher": "Nature",
      "source_type": "PRIMARY_TEXT",
      "retrieved_at": "2026-09-29T05:51:00Z",
      "canonical_uri": "https://www.nature.com/articles/s41586-026-11015-3",
      "publication_date": "2026-03-05"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "ute2_narrowed_support_excerpt",
      "excerpt": "Here we show that bulk single crystal specimens of the triplet superconductor candidate uranium ditelluride (UTe2) possess such properties. Upon applying a magnetic field to access an intermediate regime straddling two distinct superconducting phases, we find that direct current pulses can push the material in and out of a metastable state possessing an enhanced critical current Jc. This switching is controllable by the strength and duration of the stimuli, with the system ‘remembering’ whether it is in the high or low Jc state for extended periods. This high-Jc state persists for hours ... The system can then be reset ... by gradually ramping back down to zero current. This could be thought of as annealing the system, thereby returning to the equilibrium low-Jc state.",
      "locator": {},
      "source_id": "ute2_narrowed_primary_support",
      "excerpt_hash": "sha256:37f1712f9f4bb5ad16dfeb65501b2a8937d0b1b0c681f802846f3ac7533b9450",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "ute2_narrowed_support_evidence",
      "statement": "The primary report directly describes bulk single-crystal UTe2, the intermediate regime between two superconducting phases, direct-current switching, hour-scale high-Jc persistence, and gradual-current-ramp restoration of the low-Jc equilibrium state.",
      "observation_type": "DIRECT_TEXT",
      "source_location_id": "ute2_narrowed_support_excerpt"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "Direct primary-text support for the narrowed claim.",
      "claim_id": "b4b8979d-ae03-83ca-b9db-4a75092106b8",
      "direction": "SUPPORT",
      "evidence_item_id": "ute2_narrowed_support_evidence",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    }
  ],
  "outcome": "FOUND",
  "searched": "Reviewed the 2026 Nature primary report and its abstract for bulk single-crystal UTe2, the intermediate two-phase field regime, direct-current switching, hour-scale persistence, and gradual current-ramp reset."
}

Rows created

• Source 0dcb3e9b-1e51-8c37-925e-6d3a64a85bde
• SourceLocation a8dc10b9-afa2-87e5-92bd-6effc17c23c9
• EvidenceItem 7db7d4c0-8990-83b8-8e19-5f565ee3939f
• EvidenceClaimLink 4f19ad02-9cde-82ad-a687-aa4428fd8ec8 (accepted seq 25804)

Status history

Audits

None.

Audit sampling (audit-policy-v0.1): probability 1.0000, sampled yes; inputs {"n":"0.00","mean":"0.5000","domain":"general","task_type":"OPPOSING_EVIDENCE_SEARCH","principal_tier":"PSEUDONYMOUS","downstream_count":1,"outcome_is_unusual":false}