{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:PJ4QNA35NTAFNKCZQ3QWTW6YDD","short_pith_number":"pith:PJ4QNA35","canonical_record":{"source":{"id":"2109.13528","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-09-28T07:04:44Z","cross_cats_sorted":[],"title_canon_sha256":"55df2b521e0a4c549f59ae3229ded984c7fa1f5b8750f94cd15e8d00dfa31866","abstract_canon_sha256":"5e5c7083bfac79929de6bc859a2e8c1b0995ae1f4269a12ffba3d7792cecd9b2"},"schema_version":"1.0"},"canonical_sha256":"7a7906837d6cc056a85986e169dbd818cea7a370063b55e4013e1483388a94e5","source":{"kind":"arxiv","id":"2109.13528","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.13528","created_at":"2026-07-05T07:31:24Z"},{"alias_kind":"arxiv_version","alias_value":"2109.13528v1","created_at":"2026-07-05T07:31:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.13528","created_at":"2026-07-05T07:31:24Z"},{"alias_kind":"pith_short_12","alias_value":"PJ4QNA35NTAF","created_at":"2026-07-05T07:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"PJ4QNA35NTAFNKCZ","created_at":"2026-07-05T07:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"PJ4QNA35","created_at":"2026-07-05T07:31:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:PJ4QNA35NTAFNKCZQ3QWTW6YDD","target":"record","payload":{"canonical_record":{"source":{"id":"2109.13528","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-09-28T07:04:44Z","cross_cats_sorted":[],"title_canon_sha256":"55df2b521e0a4c549f59ae3229ded984c7fa1f5b8750f94cd15e8d00dfa31866","abstract_canon_sha256":"5e5c7083bfac79929de6bc859a2e8c1b0995ae1f4269a12ffba3d7792cecd9b2"},"schema_version":"1.0"},"canonical_sha256":"7a7906837d6cc056a85986e169dbd818cea7a370063b55e4013e1483388a94e5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:31:24.676562Z","signature_b64":"H95Mo3q7BxQ13m/ItEwMp6pLwz1AhPXFZEddpKuV2oPaBexmqf1UqFNa9RgESUI1Z2xyWnlHUOtOTln/YEZxCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a7906837d6cc056a85986e169dbd818cea7a370063b55e4013e1483388a94e5","last_reissued_at":"2026-07-05T07:31:24.676083Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:31:24.676083Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2109.13528","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:31:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H1bjHfim9kuZGE+DXJnogUJDBBVv86xHTP0ZnpFW9DIan+6Zo93jJ7sdNbjjswhAHdoQhMC0WSRcdQ+AkbOpAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T22:10:35.076517Z"},"content_sha256":"8e336a12a5b333707397d61123bc34d27b9c3af8e0c3b9199af6b86650486ea0","schema_version":"1.0","event_id":"sha256:8e336a12a5b333707397d61123bc34d27b9c3af8e0c3b9199af6b86650486ea0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:PJ4QNA35NTAFNKCZQ3QWTW6YDD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectroscopic visualization of flat bands in magic-angle twisted monolayer-bilayer graphene: localization-delocalization coexisting electronic states","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Lijie Zhang, Ling-Hui Tong, Li Zhang, Li-Zhen Yang, Long-Jing Yin, Qilong Wu, Qingjun Tong, Yuan Tian, Yue-Ying Zhou, Zhihui Qin","submitted_at":"2021-09-28T07:04:44Z","abstract_excerpt":"Recent transport studies have demonstrated the great potential of twisted monolayer-bilayer graphene (tMBG) as a new platform to host moir\\'e flat bands with a higher tunability than twisted bilayer graphene (tBG). However, a direct visualization of the flat bands in tMBG and its comparison with the ones in tBG remain unexplored. Here, via fabricating on a single sample with exactly the same twist angle of ~1.13{\\deg}, we present a direct comparative study between tMBG and tBG using scanning tunneling microscopy/spectroscopy. We observe a sharp density of states peak near the Fermi energy in t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.13528","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/2109.13528/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:31:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HiCGJzWRRwmp14z8LvtXQ5T0aBq6Ctt9ciyG1dmjBVEE48UElWtuOX4AuoTuDBqkwhpXFc5kRL5CBPr8dWPgAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T22:10:35.076908Z"},"content_sha256":"48cd629ca66fb299dbfea88079c80d58fa4d985d659545944fc0c2e46a959194","schema_version":"1.0","event_id":"sha256:48cd629ca66fb299dbfea88079c80d58fa4d985d659545944fc0c2e46a959194"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PJ4QNA35NTAFNKCZQ3QWTW6YDD/bundle.json","state_url":"https://pith.science/pith/PJ4QNA35NTAFNKCZQ3QWTW6YDD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PJ4QNA35NTAFNKCZQ3QWTW6YDD/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-18T22:10:35Z","links":{"resolver":"https://pith.science/pith/PJ4QNA35NTAFNKCZQ3QWTW6YDD","bundle":"https://pith.science/pith/PJ4QNA35NTAFNKCZQ3QWTW6YDD/bundle.json","state":"https://pith.science/pith/PJ4QNA35NTAFNKCZQ3QWTW6YDD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PJ4QNA35NTAFNKCZQ3QWTW6YDD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:PJ4QNA35NTAFNKCZQ3QWTW6YDD","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":"5e5c7083bfac79929de6bc859a2e8c1b0995ae1f4269a12ffba3d7792cecd9b2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-09-28T07:04:44Z","title_canon_sha256":"55df2b521e0a4c549f59ae3229ded984c7fa1f5b8750f94cd15e8d00dfa31866"},"schema_version":"1.0","source":{"id":"2109.13528","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.13528","created_at":"2026-07-05T07:31:24Z"},{"alias_kind":"arxiv_version","alias_value":"2109.13528v1","created_at":"2026-07-05T07:31:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.13528","created_at":"2026-07-05T07:31:24Z"},{"alias_kind":"pith_short_12","alias_value":"PJ4QNA35NTAF","created_at":"2026-07-05T07:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"PJ4QNA35NTAFNKCZ","created_at":"2026-07-05T07:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"PJ4QNA35","created_at":"2026-07-05T07:31:24Z"}],"graph_snapshots":[{"event_id":"sha256:48cd629ca66fb299dbfea88079c80d58fa4d985d659545944fc0c2e46a959194","target":"graph","created_at":"2026-07-05T07:31:24Z","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/2109.13528/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recent transport studies have demonstrated the great potential of twisted monolayer-bilayer graphene (tMBG) as a new platform to host moir\\'e flat bands with a higher tunability than twisted bilayer graphene (tBG). However, a direct visualization of the flat bands in tMBG and its comparison with the ones in tBG remain unexplored. Here, via fabricating on a single sample with exactly the same twist angle of ~1.13{\\deg}, we present a direct comparative study between tMBG and tBG using scanning tunneling microscopy/spectroscopy. We observe a sharp density of states peak near the Fermi energy in t","authors_text":"Lijie Zhang, Ling-Hui Tong, Li Zhang, Li-Zhen Yang, Long-Jing Yin, Qilong Wu, Qingjun Tong, Yuan Tian, Yue-Ying Zhou, Zhihui Qin","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-09-28T07:04:44Z","title":"Spectroscopic visualization of flat bands in magic-angle twisted monolayer-bilayer graphene: localization-delocalization coexisting electronic states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.13528","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":"sha256:8e336a12a5b333707397d61123bc34d27b9c3af8e0c3b9199af6b86650486ea0","target":"record","created_at":"2026-07-05T07:31:24Z","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":"5e5c7083bfac79929de6bc859a2e8c1b0995ae1f4269a12ffba3d7792cecd9b2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-09-28T07:04:44Z","title_canon_sha256":"55df2b521e0a4c549f59ae3229ded984c7fa1f5b8750f94cd15e8d00dfa31866"},"schema_version":"1.0","source":{"id":"2109.13528","kind":"arxiv","version":1}},"canonical_sha256":"7a7906837d6cc056a85986e169dbd818cea7a370063b55e4013e1483388a94e5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a7906837d6cc056a85986e169dbd818cea7a370063b55e4013e1483388a94e5","first_computed_at":"2026-07-05T07:31:24.676083Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:31:24.676083Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H95Mo3q7BxQ13m/ItEwMp6pLwz1AhPXFZEddpKuV2oPaBexmqf1UqFNa9RgESUI1Z2xyWnlHUOtOTln/YEZxCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:31:24.676562Z","signed_message":"canonical_sha256_bytes"},"source_id":"2109.13528","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8e336a12a5b333707397d61123bc34d27b9c3af8e0c3b9199af6b86650486ea0","sha256:48cd629ca66fb299dbfea88079c80d58fa4d985d659545944fc0c2e46a959194"],"state_sha256":"69bcf156d658094fb40d0833531ca229c0c65c3eadd8071a2b2c7f9599760204"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yd8SWJpniee/SdHp2vKSFHefJN0eLfKnLzHAk6jcLBKso7xGoNuoHxhZkKdAPIRwb5nzOJVFWYafZ4EC0UdTBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T22:10:35.079381Z","bundle_sha256":"8cd23a9588d818da81aef53b37b77a0e81cb684b0bb3c1d9cb91f1b58d4ce1b7"}}