{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:LAJZZGUUKQFS4XHMPY4ATITJBO","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":"d805608ba357734c3e6622adbb461b58d501087ea91ea42110118742f0678b37","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-10-17T13:28:17Z","title_canon_sha256":"12e27200342e8b0b4b04a355188bf69ae9bd8ba32e62650735f68275a393d971"},"schema_version":"1.0","source":{"id":"1910.07893","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.07893","created_at":"2026-07-05T03:19:38Z"},{"alias_kind":"arxiv_version","alias_value":"1910.07893v1","created_at":"2026-07-05T03:19:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.07893","created_at":"2026-07-05T03:19:38Z"},{"alias_kind":"pith_short_12","alias_value":"LAJZZGUUKQFS","created_at":"2026-07-05T03:19:38Z"},{"alias_kind":"pith_short_16","alias_value":"LAJZZGUUKQFS4XHM","created_at":"2026-07-05T03:19:38Z"},{"alias_kind":"pith_short_8","alias_value":"LAJZZGUU","created_at":"2026-07-05T03:19:38Z"}],"graph_snapshots":[{"event_id":"sha256:8d07afbb21c71fd5e005cc81c5ed29d82d2cd1517ab99fab8698bf205bb7c720","target":"graph","created_at":"2026-07-05T03:19:38Z","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/1910.07893/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The electronic properties of twisted bilayer graphene (TBG) can be dramatically different from those of a single graphene layer, in particular when the two layers are rotated relative to each other by a small angle. TBG has recently attracted a great deal of interest, sparked by the discovery of correlated insulating and superconducting states, for twist angle $\\theta$ close to a so-called 'magic angle' $\\approx 1.1{\\deg}$. In this work, we unveil, via near-field optical microscopy, a collective plasmon mode in charge-neutral TBG near the magic angle, which is dramatically different from the o","authors_text":"Daniel Rodan-Legrain, David Barcons-Ruiz, Dmitri K. Efetov, Efthimios Kaxiras, Frank H.L. Koppens, Hanan Herzig-Sheinfux, Iacopo Torre, Kenji Watanabe, Marco Polini, Niels C.H. Hesp, Pablo Jarillo-Herrero, Petr Stepanov, Pietro Novelli, Shiang Fang, Stephen Carr, Takashi Taniguchi, Yuan Cao","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-10-17T13:28:17Z","title":"Collective excitations in twisted bilayer graphene close to the magic angle"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.07893","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:c83f0baeb20aabcea1280b54f1da7ec02f46d9c4b9ec3be258d4350f1c4912fd","target":"record","created_at":"2026-07-05T03:19:38Z","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":"d805608ba357734c3e6622adbb461b58d501087ea91ea42110118742f0678b37","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-10-17T13:28:17Z","title_canon_sha256":"12e27200342e8b0b4b04a355188bf69ae9bd8ba32e62650735f68275a393d971"},"schema_version":"1.0","source":{"id":"1910.07893","kind":"arxiv","version":1}},"canonical_sha256":"58139c9a94540b2e5cec7e3809a2690bb203a137e876aafc03fcd0e921eb736c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"58139c9a94540b2e5cec7e3809a2690bb203a137e876aafc03fcd0e921eb736c","first_computed_at":"2026-07-05T03:19:38.317134Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:19:38.317134Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OVEg9RWzJkdxAZKYxqA2nZIvxx6AJZjZC1FoQ3+J4TWvdD0udoDy+8IxDa2dBJ2GWmgwsuWHjL93+Awk16VBBg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:19:38.317617Z","signed_message":"canonical_sha256_bytes"},"source_id":"1910.07893","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c83f0baeb20aabcea1280b54f1da7ec02f46d9c4b9ec3be258d4350f1c4912fd","sha256:8d07afbb21c71fd5e005cc81c5ed29d82d2cd1517ab99fab8698bf205bb7c720"],"state_sha256":"98f84139ed79081a9970ab094fabf8f31c4e4759f30e6d0e042bf65f9430800a"}