{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:TMIHIRJBIO7VFGITHFUBI54KDQ","short_pith_number":"pith:TMIHIRJB","canonical_record":{"source":{"id":"2103.08120","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-03-15T03:38:00Z","cross_cats_sorted":[],"title_canon_sha256":"4a95a359b0eb732c403b3402b8d7be612ce37771857f33c0935a562cb00332cd","abstract_canon_sha256":"449d08a651a13533b8210f2a71468ac095bc7f3a7641286c5ecb3120b34ca4d2"},"schema_version":"1.0"},"canonical_sha256":"9b1074452143bf529913396814778a1c230eaa8e544f0f5d3c65d2a483503911","source":{"kind":"arxiv","id":"2103.08120","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.08120","created_at":"2026-07-05T02:30:31Z"},{"alias_kind":"arxiv_version","alias_value":"2103.08120v1","created_at":"2026-07-05T02:30:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.08120","created_at":"2026-07-05T02:30:31Z"},{"alias_kind":"pith_short_12","alias_value":"TMIHIRJBIO7V","created_at":"2026-07-05T02:30:31Z"},{"alias_kind":"pith_short_16","alias_value":"TMIHIRJBIO7VFGIT","created_at":"2026-07-05T02:30:31Z"},{"alias_kind":"pith_short_8","alias_value":"TMIHIRJB","created_at":"2026-07-05T02:30:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:TMIHIRJBIO7VFGITHFUBI54KDQ","target":"record","payload":{"canonical_record":{"source":{"id":"2103.08120","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-03-15T03:38:00Z","cross_cats_sorted":[],"title_canon_sha256":"4a95a359b0eb732c403b3402b8d7be612ce37771857f33c0935a562cb00332cd","abstract_canon_sha256":"449d08a651a13533b8210f2a71468ac095bc7f3a7641286c5ecb3120b34ca4d2"},"schema_version":"1.0"},"canonical_sha256":"9b1074452143bf529913396814778a1c230eaa8e544f0f5d3c65d2a483503911","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:30:31.995357Z","signature_b64":"Do+fRrrzn3STNEuktOQfcmsz3NEmSgR7Ikz1XpC1176hoMkk2AAQLKCEquqzkRbaoNhCGQhG3BlNbuSB4tMWDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9b1074452143bf529913396814778a1c230eaa8e544f0f5d3c65d2a483503911","last_reissued_at":"2026-07-05T02:30:31.994921Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:30:31.994921Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2103.08120","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":"2026-07-05T02:30:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F6iylBJAbNmGXOArjg/+Yf8/Wbu5jtbXwWe/3tNNhKMNWYo/EUurLT7KTr7i90q7iBZ8obb2h9BBF50CfuYlBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T09:30:03.043268Z"},"content_sha256":"595a628a0ab59a9cab31ef69eb4de1f0b86ec45da323af6cbaee2230a25f4e12","schema_version":"1.0","event_id":"sha256:595a628a0ab59a9cab31ef69eb4de1f0b86ec45da323af6cbaee2230a25f4e12"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:TMIHIRJBIO7VFGITHFUBI54KDQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Accurate Measurement of the Gap of Graphene/hBN Moir\\'e Superlattice through Photocurrent Spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Jixiang Yang, Kenji Watanabe, Lei Wang, Long Ju, Paul L. McEuen, Qihang Zhang, Takashi Taniguchi, Tianyi Han","submitted_at":"2021-03-15T03:38:00Z","abstract_excerpt":"Monolayer graphene aligned with hexagonal boron nitride (hBN) develops a gap at the charge neutrality point (CNP). This gap has previously been extensively studied by electrical transport through thermal activation measurements. Here, we report the determination of the gap size at the CNP of graphene/hBN superlattice through photocurrent spectroscopy study. We demonstrate two distinct measurement approaches to extract the gap size. A maximum of ~ 14 meV gap is observed for devices with a twist angle of less than 1 degree. This value is significantly smaller than that obtained from thermal acti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.08120","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/2103.08120/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":"2026-07-05T02:30:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pzL1NBlCjVHCA3Oi+xUIlv+VKmw7xqmmBgLyJIjkB8RbQljJ2IT0yLCcxWuNRDxGzEsD3LtKz6pcurAxu9N8Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T09:30:03.044171Z"},"content_sha256":"60bfb28d90ca1e76133e892caf863eb045b737eaa277927332eb2c51daa365ef","schema_version":"1.0","event_id":"sha256:60bfb28d90ca1e76133e892caf863eb045b737eaa277927332eb2c51daa365ef"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TMIHIRJBIO7VFGITHFUBI54KDQ/bundle.json","state_url":"https://pith.science/pith/TMIHIRJBIO7VFGITHFUBI54KDQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TMIHIRJBIO7VFGITHFUBI54KDQ/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":"2026-08-07T09:30:03Z","links":{"resolver":"https://pith.science/pith/TMIHIRJBIO7VFGITHFUBI54KDQ","bundle":"https://pith.science/pith/TMIHIRJBIO7VFGITHFUBI54KDQ/bundle.json","state":"https://pith.science/pith/TMIHIRJBIO7VFGITHFUBI54KDQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TMIHIRJBIO7VFGITHFUBI54KDQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:TMIHIRJBIO7VFGITHFUBI54KDQ","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":"449d08a651a13533b8210f2a71468ac095bc7f3a7641286c5ecb3120b34ca4d2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-03-15T03:38:00Z","title_canon_sha256":"4a95a359b0eb732c403b3402b8d7be612ce37771857f33c0935a562cb00332cd"},"schema_version":"1.0","source":{"id":"2103.08120","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.08120","created_at":"2026-07-05T02:30:31Z"},{"alias_kind":"arxiv_version","alias_value":"2103.08120v1","created_at":"2026-07-05T02:30:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.08120","created_at":"2026-07-05T02:30:31Z"},{"alias_kind":"pith_short_12","alias_value":"TMIHIRJBIO7V","created_at":"2026-07-05T02:30:31Z"},{"alias_kind":"pith_short_16","alias_value":"TMIHIRJBIO7VFGIT","created_at":"2026-07-05T02:30:31Z"},{"alias_kind":"pith_short_8","alias_value":"TMIHIRJB","created_at":"2026-07-05T02:30:31Z"}],"graph_snapshots":[{"event_id":"sha256:60bfb28d90ca1e76133e892caf863eb045b737eaa277927332eb2c51daa365ef","target":"graph","created_at":"2026-07-05T02:30:31Z","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/2103.08120/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Monolayer graphene aligned with hexagonal boron nitride (hBN) develops a gap at the charge neutrality point (CNP). This gap has previously been extensively studied by electrical transport through thermal activation measurements. Here, we report the determination of the gap size at the CNP of graphene/hBN superlattice through photocurrent spectroscopy study. We demonstrate two distinct measurement approaches to extract the gap size. A maximum of ~ 14 meV gap is observed for devices with a twist angle of less than 1 degree. This value is significantly smaller than that obtained from thermal acti","authors_text":"Jixiang Yang, Kenji Watanabe, Lei Wang, Long Ju, Paul L. McEuen, Qihang Zhang, Takashi Taniguchi, Tianyi Han","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-03-15T03:38:00Z","title":"Accurate Measurement of the Gap of Graphene/hBN Moir\\'e Superlattice through Photocurrent Spectroscopy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.08120","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":"sha256:595a628a0ab59a9cab31ef69eb4de1f0b86ec45da323af6cbaee2230a25f4e12","target":"record","created_at":"2026-07-05T02:30:31Z","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":"449d08a651a13533b8210f2a71468ac095bc7f3a7641286c5ecb3120b34ca4d2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-03-15T03:38:00Z","title_canon_sha256":"4a95a359b0eb732c403b3402b8d7be612ce37771857f33c0935a562cb00332cd"},"schema_version":"1.0","source":{"id":"2103.08120","kind":"arxiv","version":1}},"canonical_sha256":"9b1074452143bf529913396814778a1c230eaa8e544f0f5d3c65d2a483503911","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9b1074452143bf529913396814778a1c230eaa8e544f0f5d3c65d2a483503911","first_computed_at":"2026-07-05T02:30:31.994921Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:30:31.994921Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Do+fRrrzn3STNEuktOQfcmsz3NEmSgR7Ikz1XpC1176hoMkk2AAQLKCEquqzkRbaoNhCGQhG3BlNbuSB4tMWDA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:30:31.995357Z","signed_message":"canonical_sha256_bytes"},"source_id":"2103.08120","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:595a628a0ab59a9cab31ef69eb4de1f0b86ec45da323af6cbaee2230a25f4e12","sha256:60bfb28d90ca1e76133e892caf863eb045b737eaa277927332eb2c51daa365ef"],"state_sha256":"8550e0c8cb1066041ff83d713ce3bc7cba07320225546b675ec2f08ca53256e1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o4Bc3D5c70+2ctzNTXGfcq5JXHxdhRJc+bM0RJNhqI4gIpftxorJ8LikRCsVLgHhxcahe/ElTHEqsNvc7HW4BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T09:30:03.051795Z","bundle_sha256":"3aa3b854ce0691ad9defc14ca530ac5d2a9fd1efbfae45ac7e016504b5d75330"}}