{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:MALLZGZO5LA72Z5CUHALCUQQQQ","short_pith_number":"pith:MALLZGZO","schema_version":"1.0","canonical_sha256":"6016bc9b2eeac1fd67a2a1c0b15210841bf55119e5aa15dd6167edaa930eed89","source":{"kind":"arxiv","id":"2512.21384","version":2},"attestation_state":"computed","paper":{"title":"Thermodynamic Constraints on Perfect Equilibrium Superconducting Diodes","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mes-hall","cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"Pavan Hosur","submitted_at":"2025-12-24T19:00:20Z","abstract_excerpt":"Superconducting diodes promise dissipationless rectification, yet equilibrium platforms without engineered junctions typically exhibit modest efficiencies. We identify a general thermodynamic origin of this behavior that is largely independent of microscopic details. Denoting $\\epsilon = |I_c^-/I_c^+|$, where $I_c^\\pm$ are critical currents in opposite directions with $|I_c^+|>|I_c^-|$ by convention, we show that an exact perfect equilibrium diode ($\\epsilon=0$) is forbidden by continuity of the free energy. Asymptotically perfect behavior $\\epsilon\\to0$ is possible within a global equilibrium"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2512.21384","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2025-12-24T19:00:20Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.str-el"],"title_canon_sha256":"a43353b2284677ce83225afc27dc551195e065621f55f82e79cb710275b2a606","abstract_canon_sha256":"763fe7fe5c717f04f189f33aecd4a14ba18f28c68429b52c04322863afc6c70f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-01T00:17:09.784391Z","signature_b64":"8b2YAQ4sozPHKPHUwehuJbNBE4JtdDtLVWakEytrZD+DiBmWE8AfJM85K8TqfpEDICewA+amzhZIdiOAz1jbCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6016bc9b2eeac1fd67a2a1c0b15210841bf55119e5aa15dd6167edaa930eed89","last_reissued_at":"2026-07-01T00:17:09.783904Z","signature_status":"signed_v1","first_computed_at":"2026-07-01T00:17:09.783904Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Thermodynamic Constraints on Perfect Equilibrium Superconducting Diodes","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mes-hall","cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"Pavan Hosur","submitted_at":"2025-12-24T19:00:20Z","abstract_excerpt":"Superconducting diodes promise dissipationless rectification, yet equilibrium platforms without engineered junctions typically exhibit modest efficiencies. We identify a general thermodynamic origin of this behavior that is largely independent of microscopic details. Denoting $\\epsilon = |I_c^-/I_c^+|$, where $I_c^\\pm$ are critical currents in opposite directions with $|I_c^+|>|I_c^-|$ by convention, we show that an exact perfect equilibrium diode ($\\epsilon=0$) is forbidden by continuity of the free energy. Asymptotically perfect behavior $\\epsilon\\to0$ is possible within a global equilibrium"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2512.21384","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2512.21384/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2512.21384","created_at":"2026-07-01T00:17:09.783962+00:00"},{"alias_kind":"arxiv_version","alias_value":"2512.21384v2","created_at":"2026-07-01T00:17:09.783962+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2512.21384","created_at":"2026-07-01T00:17:09.783962+00:00"},{"alias_kind":"pith_short_12","alias_value":"MALLZGZO5LA7","created_at":"2026-07-01T00:17:09.783962+00:00"},{"alias_kind":"pith_short_16","alias_value":"MALLZGZO5LA72Z5C","created_at":"2026-07-01T00:17:09.783962+00:00"},{"alias_kind":"pith_short_8","alias_value":"MALLZGZO","created_at":"2026-07-01T00:17:09.783962+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2604.14623","citing_title":"Quantum Landscape of Superconducting Diodes","ref_index":59,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/MALLZGZO5LA72Z5CUHALCUQQQQ","json":"https://pith.science/pith/MALLZGZO5LA72Z5CUHALCUQQQQ.json","graph_json":"https://pith.science/api/pith-number/MALLZGZO5LA72Z5CUHALCUQQQQ/graph.json","events_json":"https://pith.science/api/pith-number/MALLZGZO5LA72Z5CUHALCUQQQQ/events.json","paper":"https://pith.science/paper/MALLZGZO"},"agent_actions":{"view_html":"https://pith.science/pith/MALLZGZO5LA72Z5CUHALCUQQQQ","download_json":"https://pith.science/pith/MALLZGZO5LA72Z5CUHALCUQQQQ.json","view_paper":"https://pith.science/paper/MALLZGZO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2512.21384&json=true","fetch_graph":"https://pith.science/api/pith-number/MALLZGZO5LA72Z5CUHALCUQQQQ/graph.json","fetch_events":"https://pith.science/api/pith-number/MALLZGZO5LA72Z5CUHALCUQQQQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/MALLZGZO5LA72Z5CUHALCUQQQQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/MALLZGZO5LA72Z5CUHALCUQQQQ/action/storage_attestation","attest_author":"https://pith.science/pith/MALLZGZO5LA72Z5CUHALCUQQQQ/action/author_attestation","sign_citation":"https://pith.science/pith/MALLZGZO5LA72Z5CUHALCUQQQQ/action/citation_signature","submit_replication":"https://pith.science/pith/MALLZGZO5LA72Z5CUHALCUQQQQ/action/replication_record"}},"created_at":"2026-07-01T00:17:09.783962+00:00","updated_at":"2026-07-01T00:17:09.783962+00:00"}