{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:CXUTNYA352BKE6GEYECNOA4VMZ","short_pith_number":"pith:CXUTNYA3","canonical_record":{"source":{"id":"2005.13879","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-05-28T09:52:20Z","cross_cats_sorted":[],"title_canon_sha256":"46629d4b05bae613deecb397aa7058e4748603a8cb6b08bd292f3153f0d9ac06","abstract_canon_sha256":"4eb3ca96f91b2f8bc4a9d3f289b645d2e10a1e616243ac9dc9c6d989dc353e72"},"schema_version":"1.0"},"canonical_sha256":"15e936e01bee82a278c4c104d70395667084816e101c3e1fc5fb8460c830bfaa","source":{"kind":"arxiv","id":"2005.13879","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.13879","created_at":"2026-07-05T02:03:31Z"},{"alias_kind":"arxiv_version","alias_value":"2005.13879v2","created_at":"2026-07-05T02:03:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.13879","created_at":"2026-07-05T02:03:31Z"},{"alias_kind":"pith_short_12","alias_value":"CXUTNYA352BK","created_at":"2026-07-05T02:03:31Z"},{"alias_kind":"pith_short_16","alias_value":"CXUTNYA352BKE6GE","created_at":"2026-07-05T02:03:31Z"},{"alias_kind":"pith_short_8","alias_value":"CXUTNYA3","created_at":"2026-07-05T02:03:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:CXUTNYA352BKE6GEYECNOA4VMZ","target":"record","payload":{"canonical_record":{"source":{"id":"2005.13879","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-05-28T09:52:20Z","cross_cats_sorted":[],"title_canon_sha256":"46629d4b05bae613deecb397aa7058e4748603a8cb6b08bd292f3153f0d9ac06","abstract_canon_sha256":"4eb3ca96f91b2f8bc4a9d3f289b645d2e10a1e616243ac9dc9c6d989dc353e72"},"schema_version":"1.0"},"canonical_sha256":"15e936e01bee82a278c4c104d70395667084816e101c3e1fc5fb8460c830bfaa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:03:31.117284Z","signature_b64":"JDRF6euHWlFahVwIwKVVJCt0ewEXVZnQhzCy2v5QSBbwbim53WaMXOypDvLbySD4GOe6zRbJIfyMOlQqZERKAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"15e936e01bee82a278c4c104d70395667084816e101c3e1fc5fb8460c830bfaa","last_reissued_at":"2026-07-05T02:03:31.116854Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:03:31.116854Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2005.13879","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:03:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m0721cQxOoXQ5Sl+P4QZ/BtyL1vIihq6zl8GrxwJJ1oRcaAZx/nziPAGqXn9/l7RcMXXhAE84gtfZd0whM4bCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T19:35:00.404402Z"},"content_sha256":"ab69f47719e7ce12ed567ec2898e0f571f3b07a001183e9192b3513712ab646c","schema_version":"1.0","event_id":"sha256:ab69f47719e7ce12ed567ec2898e0f571f3b07a001183e9192b3513712ab646c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:CXUTNYA352BKE6GEYECNOA4VMZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tuning band gaps in twisted bilayer MoS$_2$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Francisco Guinea, Jose Angel Silva-Guillen, Shengjun Yuan, Yipei Zhang, Zhen Zhan","submitted_at":"2020-05-28T09:52:20Z","abstract_excerpt":"In the emerging world of twisted bilayer structures, the possible configurations are limitless, which enables for a rich landscape of electronic properties. In this paper, we focus on twisted bilayer transition metal dichalcogenides (TMDCs) and study its properties by means of an accurate tight-binding model. We build structures with different angles and find that the so-called flatbands emerge when the twist angle is sufficiently small (around 7.3$^{\\circ}$). Interestingly, the band gap can be tuned up to a 2.2\\% (51 meV) when the twist angle in the relaxed sample varies from 21.8$^{\\circ}$ t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.13879","kind":"arxiv","version":2},"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/2005.13879/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":"2026-07-05T02:03:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kj42Nm4cg7NLaOIcxmsQRILiUCQPJZFv9vU04Jcb8R9hZOlTwLHDUtdEeJh/QZWzaqfC/eWGBFhzzPkI0fwYAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T19:35:00.404906Z"},"content_sha256":"e6429e2407f6100869dd4cabd2a47f23df0e33f1a1a15e28220bdb3c51eb1c93","schema_version":"1.0","event_id":"sha256:e6429e2407f6100869dd4cabd2a47f23df0e33f1a1a15e28220bdb3c51eb1c93"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CXUTNYA352BKE6GEYECNOA4VMZ/bundle.json","state_url":"https://pith.science/pith/CXUTNYA352BKE6GEYECNOA4VMZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CXUTNYA352BKE6GEYECNOA4VMZ/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":"2026-08-21T19:35:00Z","links":{"resolver":"https://pith.science/pith/CXUTNYA352BKE6GEYECNOA4VMZ","bundle":"https://pith.science/pith/CXUTNYA352BKE6GEYECNOA4VMZ/bundle.json","state":"https://pith.science/pith/CXUTNYA352BKE6GEYECNOA4VMZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CXUTNYA352BKE6GEYECNOA4VMZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:CXUTNYA352BKE6GEYECNOA4VMZ","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":"4eb3ca96f91b2f8bc4a9d3f289b645d2e10a1e616243ac9dc9c6d989dc353e72","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-05-28T09:52:20Z","title_canon_sha256":"46629d4b05bae613deecb397aa7058e4748603a8cb6b08bd292f3153f0d9ac06"},"schema_version":"1.0","source":{"id":"2005.13879","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.13879","created_at":"2026-07-05T02:03:31Z"},{"alias_kind":"arxiv_version","alias_value":"2005.13879v2","created_at":"2026-07-05T02:03:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.13879","created_at":"2026-07-05T02:03:31Z"},{"alias_kind":"pith_short_12","alias_value":"CXUTNYA352BK","created_at":"2026-07-05T02:03:31Z"},{"alias_kind":"pith_short_16","alias_value":"CXUTNYA352BKE6GE","created_at":"2026-07-05T02:03:31Z"},{"alias_kind":"pith_short_8","alias_value":"CXUTNYA3","created_at":"2026-07-05T02:03:31Z"}],"graph_snapshots":[{"event_id":"sha256:e6429e2407f6100869dd4cabd2a47f23df0e33f1a1a15e28220bdb3c51eb1c93","target":"graph","created_at":"2026-07-05T02:03:31Z","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/2005.13879/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In the emerging world of twisted bilayer structures, the possible configurations are limitless, which enables for a rich landscape of electronic properties. In this paper, we focus on twisted bilayer transition metal dichalcogenides (TMDCs) and study its properties by means of an accurate tight-binding model. We build structures with different angles and find that the so-called flatbands emerge when the twist angle is sufficiently small (around 7.3$^{\\circ}$). Interestingly, the band gap can be tuned up to a 2.2\\% (51 meV) when the twist angle in the relaxed sample varies from 21.8$^{\\circ}$ t","authors_text":"Francisco Guinea, Jose Angel Silva-Guillen, Shengjun Yuan, Yipei Zhang, Zhen Zhan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-05-28T09:52:20Z","title":"Tuning band gaps in twisted bilayer MoS$_2$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.13879","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:ab69f47719e7ce12ed567ec2898e0f571f3b07a001183e9192b3513712ab646c","target":"record","created_at":"2026-07-05T02:03:31Z","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":"4eb3ca96f91b2f8bc4a9d3f289b645d2e10a1e616243ac9dc9c6d989dc353e72","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2020-05-28T09:52:20Z","title_canon_sha256":"46629d4b05bae613deecb397aa7058e4748603a8cb6b08bd292f3153f0d9ac06"},"schema_version":"1.0","source":{"id":"2005.13879","kind":"arxiv","version":2}},"canonical_sha256":"15e936e01bee82a278c4c104d70395667084816e101c3e1fc5fb8460c830bfaa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"15e936e01bee82a278c4c104d70395667084816e101c3e1fc5fb8460c830bfaa","first_computed_at":"2026-07-05T02:03:31.116854Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:03:31.116854Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JDRF6euHWlFahVwIwKVVJCt0ewEXVZnQhzCy2v5QSBbwbim53WaMXOypDvLbySD4GOe6zRbJIfyMOlQqZERKAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:03:31.117284Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.13879","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ab69f47719e7ce12ed567ec2898e0f571f3b07a001183e9192b3513712ab646c","sha256:e6429e2407f6100869dd4cabd2a47f23df0e33f1a1a15e28220bdb3c51eb1c93"],"state_sha256":"2ea300d03e20f939a1806b4e4b5436a25dfdd97682247c3795c0d7ba9ed1d831"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2TNHtr0z8Bs+I5Xd1y8BU36b8wSi0alXGZZTaikFtwlwkZd43IDeIS5WbTQPsOZniThVXPF7Pi4WoYz2t6XaCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T19:35:00.410364Z","bundle_sha256":"11e995da4a48f5cba352db899e07af64077a0b510fdecd48fc0a19abddade211"}}