{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:DDKXJP66A5SG2PFZKP5JSM6LTG","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":"1cc841df6b5c29ef228f70a82b21264b1937fcfb5acd83793058cf178a24dd6c","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-01-03T15:31:40Z","title_canon_sha256":"ffd22b8f91227ecfbe43d708d2ad5573c5fd944ada4bee02ce7f1e9385c7dcc7"},"schema_version":"1.0","source":{"id":"1401.0659","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.0659","created_at":"2026-05-18T02:48:17Z"},{"alias_kind":"arxiv_version","alias_value":"1401.0659v2","created_at":"2026-05-18T02:48:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.0659","created_at":"2026-05-18T02:48:17Z"},{"alias_kind":"pith_short_12","alias_value":"DDKXJP66A5SG","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_16","alias_value":"DDKXJP66A5SG2PFZ","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_8","alias_value":"DDKXJP66","created_at":"2026-05-18T12:28:25Z"}],"graph_snapshots":[{"event_id":"sha256:b06a1965292c7615a7ea286e025a2cdee187d640c31612075b4d29734332f89a","target":"graph","created_at":"2026-05-18T02:48:17Z","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"},"paper":{"abstract_excerpt":"Bilayer graphene has a unique electronic structure influenced by a complex interplay between various degrees of freedom. We probe its chemical potential using double bilayer graphene heterostructures, separated by a hexagonal boron nitride dielectric. The chemical potential has a non-linear carrier density dependence, and bears signatures of electron-electron interactions. The data allow a direct measurement of the electric field-induced bandgap at zero magnetic field, the orbital Landau level (LLs) energies, and the broken symmetry quantum Hall state gaps at high magnetic fields. We observe s","authors_text":"Babak Fallahazad, David C. Dillen, Emanuel Tutuc, Jiamin Xue, Kayoung Lee, Kenji Watanabe, Kyounghwan Kim, Takashi Taniguchi","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-01-03T15:31:40Z","title":"Chemical Potential and Quantum Hall Ferromagnetism in Bilayer Graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.0659","kind":"arxiv","version":2},"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":"sha256:145b094421673b48e017b312f14c37423f227b06cf9d42d5e9688047004c9c39","target":"record","created_at":"2026-05-18T02:48:17Z","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":"1cc841df6b5c29ef228f70a82b21264b1937fcfb5acd83793058cf178a24dd6c","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-01-03T15:31:40Z","title_canon_sha256":"ffd22b8f91227ecfbe43d708d2ad5573c5fd944ada4bee02ce7f1e9385c7dcc7"},"schema_version":"1.0","source":{"id":"1401.0659","kind":"arxiv","version":2}},"canonical_sha256":"18d574bfde07646d3cb953fa9933cb9986ecf5ac2a84f3258c8c7ef31dd218de","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"18d574bfde07646d3cb953fa9933cb9986ecf5ac2a84f3258c8c7ef31dd218de","first_computed_at":"2026-05-18T02:48:17.366979Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:48:17.366979Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zrMjUOTwWLEF5b9bs0QiNN8QUvnG+K1VJBxPewrx0u8TaUHhpcIx/nCYXKBXZhKSpKJq060mNX8J6Z81OtACBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:48:17.367424Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.0659","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:145b094421673b48e017b312f14c37423f227b06cf9d42d5e9688047004c9c39","sha256:b06a1965292c7615a7ea286e025a2cdee187d640c31612075b4d29734332f89a"],"state_sha256":"99246c11c2c244e35bc08aaeb982ce7edf6a17fce038018eae656c209f478710"}