{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:YV6RWGAXPK3OFY4HWVLVFWBJQ3","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"031089856c969b1b2f6e7e54561a09ca868aba222e27c6d3e71771e0d3880112","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2021-12-09T09:12:48Z","title_canon_sha256":"ec743ba8b11bee728ed96acaab90306e1d77a5215137318ad434f38d76b0ff56"},"schema_version":"1.0","source":{"id":"2112.04782","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.04782","created_at":"2026-07-05T06:52:19Z"},{"alias_kind":"arxiv_version","alias_value":"2112.04782v1","created_at":"2026-07-05T06:52:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.04782","created_at":"2026-07-05T06:52:19Z"},{"alias_kind":"pith_short_12","alias_value":"YV6RWGAXPK3O","created_at":"2026-07-05T06:52:19Z"},{"alias_kind":"pith_short_16","alias_value":"YV6RWGAXPK3OFY4H","created_at":"2026-07-05T06:52:19Z"},{"alias_kind":"pith_short_8","alias_value":"YV6RWGAX","created_at":"2026-07-05T06:52:19Z"}],"graph_snapshots":[{"event_id":"sha256:932d6559ee1b9187033b04cc4edf3dcb35e234a154118f3a3bb0fc6ff9d1fa5c","target":"graph","created_at":"2026-07-05T06:52:19Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2112.04782/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Monolayers of a prototypical cuprate high transition-temperature ($T_C$) superconductor $Bi_2Sr_2CaCu_2O_{8+\\delta}$ (Bi2212) was recently found to show $T_C$ and other electronic properties similar to those of the bulk. The robustness of superconductivity in an ideal two-dimensional (2D) system was an intriguing fact that defied the Mermin-Wagner theorem. Here, we took advantage of the high sensitivity of scanning SQUID susceptometry to image the phase stiffness throughout the phase transition of Bi2212 in the 2D limit. We found susceptibility oscillated with flux between diamagnetism and par","authors_text":"B. K. Xiang, G. D. Gu, H. Ru, J. J. Zhu, J. X. Hao, K. Watanabe, S. Y. Wang, T. Taniguchi, Y. Feng, Y. H. Wang, Y. P. Pan, Y. Qi, Y. S. Lin, Y. Yu, Y. Zhang","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2021-12-09T09:12:48Z","title":"Oscillating paramagnetic Meissner effect and Berezinskii-Kosterlitz-Thouless transition in $Bi_2Sr_2CaCu_2O_{8+\\delta}$ monolayer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.04782","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:5d7bb76907354da5305b65a26aeff066162939d276cd63ee9f97ce85dd2c7f03","target":"record","created_at":"2026-07-05T06:52:19Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"031089856c969b1b2f6e7e54561a09ca868aba222e27c6d3e71771e0d3880112","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2021-12-09T09:12:48Z","title_canon_sha256":"ec743ba8b11bee728ed96acaab90306e1d77a5215137318ad434f38d76b0ff56"},"schema_version":"1.0","source":{"id":"2112.04782","kind":"arxiv","version":1}},"canonical_sha256":"c57d1b18177ab6e2e387b55752d82986e1eaeb7254a1806565ae882f4c8623be","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c57d1b18177ab6e2e387b55752d82986e1eaeb7254a1806565ae882f4c8623be","first_computed_at":"2026-07-05T06:52:19.061167Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:52:19.061167Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"I58jIXEYJfh5WmXsG+LKSb1yzIUDzS+i43W7hUhOwCwrkIvfTB4iWxnkXISuekiS4AEWIrppj0PDktNzVLGcDA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:52:19.061658Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.04782","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5d7bb76907354da5305b65a26aeff066162939d276cd63ee9f97ce85dd2c7f03","sha256:932d6559ee1b9187033b04cc4edf3dcb35e234a154118f3a3bb0fc6ff9d1fa5c"],"state_sha256":"3e5e6466f34845e0aef441d589a78097b46f9b404a0e93e7d2238b5b2a2bbd6f"}