{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:UIFFTVB3FRYUDSDTDWHWRSBKFV","short_pith_number":"pith:UIFFTVB3","schema_version":"1.0","canonical_sha256":"a20a59d43b2c7141c8731d8f68c82a2d7b02d890a7fc9e21ecd5ab8d590a04be","source":{"kind":"arxiv","id":"2608.03072","version":1},"attestation_state":"computed","paper":{"title":"Pressure induced magnetic-field-free superconducting diode effect in NbSe2 flake","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.supr-con","authors_text":"Changhua Li, Cuiying Pei, Jie Shen, Juefei Wu, Jun Li, Lingxiao Zhao, Qilian Zhang, Qi Wang, Shihao Zhu, Tian Le, Tonghuan Fu, Wenge Yang, Wen-Yu He, Xiao Lin, Xujie L\\\"u, Yanpeng Qi, Yi Liao, Yi Zhao, Yueshen Wu, Yulin Chen","submitted_at":"2026-08-04T03:37:53Z","abstract_excerpt":"The superconducting diode effect (SDE) is a fascinating nonreciprocal phenomenon where the critical current is different for opposite current directions. It is widely believed that realizing SDE requires breaking both inversion symmetry (IS) and time-reversal symmetry (TRS), which are usually achieved via heterostructure engineering and applying external magnetic fields. Here, we report a pressure-induced magnetic-field-free SDE in NbSe2 flakes without any heterostructures. We show that pressure alone breaks the IS, as confirmed by the second harmonic generation. Crucially, upon applying an ou"},"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":"2608.03072","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2026-08-04T03:37:53Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"a54eb18c840fe89dfcf1304a6c8035450089846029eafebf0bd191e252c2452e","abstract_canon_sha256":"2d7ec7d50416468cdbfbcf48b2f9c064fc4051e36db7b80c80f0731584b7ea89"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-05T00:45:16.048651Z","signature_b64":"gsnrtbeZ8JLkiZUnUTTKG67cfQTVQfJyzgK85lTfMNGdlnJewYVKHaL1vxDA1vhvmy+E+oCOgO9Am5T47QdcAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a20a59d43b2c7141c8731d8f68c82a2d7b02d890a7fc9e21ecd5ab8d590a04be","last_reissued_at":"2026-08-05T00:45:16.046186Z","signature_status":"signed_v1","first_computed_at":"2026-08-05T00:45:16.046186Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Pressure induced magnetic-field-free superconducting diode effect in NbSe2 flake","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.supr-con","authors_text":"Changhua Li, Cuiying Pei, Jie Shen, Juefei Wu, Jun Li, Lingxiao Zhao, Qilian Zhang, Qi Wang, Shihao Zhu, Tian Le, Tonghuan Fu, Wenge Yang, Wen-Yu He, Xiao Lin, Xujie L\\\"u, Yanpeng Qi, Yi Liao, Yi Zhao, Yueshen Wu, Yulin Chen","submitted_at":"2026-08-04T03:37:53Z","abstract_excerpt":"The superconducting diode effect (SDE) is a fascinating nonreciprocal phenomenon where the critical current is different for opposite current directions. It is widely believed that realizing SDE requires breaking both inversion symmetry (IS) and time-reversal symmetry (TRS), which are usually achieved via heterostructure engineering and applying external magnetic fields. Here, we report a pressure-induced magnetic-field-free SDE in NbSe2 flakes without any heterostructures. We show that pressure alone breaks the IS, as confirmed by the second harmonic generation. Crucially, upon applying an ou"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.03072","kind":"arxiv","version":1},"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/2608.03072/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":"2608.03072","created_at":"2026-08-05T00:45:16.047097+00:00"},{"alias_kind":"arxiv_version","alias_value":"2608.03072v1","created_at":"2026-08-05T00:45:16.047097+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.03072","created_at":"2026-08-05T00:45:16.047097+00:00"},{"alias_kind":"pith_short_12","alias_value":"UIFFTVB3FRYU","created_at":"2026-08-05T00:45:16.047097+00:00"},{"alias_kind":"pith_short_16","alias_value":"UIFFTVB3FRYUDSDT","created_at":"2026-08-05T00:45:16.047097+00:00"},{"alias_kind":"pith_short_8","alias_value":"UIFFTVB3","created_at":"2026-08-05T00:45:16.047097+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/UIFFTVB3FRYUDSDTDWHWRSBKFV","json":"https://pith.science/pith/UIFFTVB3FRYUDSDTDWHWRSBKFV.json","graph_json":"https://pith.science/api/pith-number/UIFFTVB3FRYUDSDTDWHWRSBKFV/graph.json","events_json":"https://pith.science/api/pith-number/UIFFTVB3FRYUDSDTDWHWRSBKFV/events.json","paper":"https://pith.science/paper/UIFFTVB3"},"agent_actions":{"view_html":"https://pith.science/pith/UIFFTVB3FRYUDSDTDWHWRSBKFV","download_json":"https://pith.science/pith/UIFFTVB3FRYUDSDTDWHWRSBKFV.json","view_paper":"https://pith.science/paper/UIFFTVB3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2608.03072&json=true","fetch_graph":"https://pith.science/api/pith-number/UIFFTVB3FRYUDSDTDWHWRSBKFV/graph.json","fetch_events":"https://pith.science/api/pith-number/UIFFTVB3FRYUDSDTDWHWRSBKFV/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UIFFTVB3FRYUDSDTDWHWRSBKFV/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UIFFTVB3FRYUDSDTDWHWRSBKFV/action/storage_attestation","attest_author":"https://pith.science/pith/UIFFTVB3FRYUDSDTDWHWRSBKFV/action/author_attestation","sign_citation":"https://pith.science/pith/UIFFTVB3FRYUDSDTDWHWRSBKFV/action/citation_signature","submit_replication":"https://pith.science/pith/UIFFTVB3FRYUDSDTDWHWRSBKFV/action/replication_record"}},"created_at":"2026-08-05T00:45:16.047097+00:00","updated_at":"2026-08-05T00:45:16.047097+00:00"}