{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:SSDYEPEM7Q3OP7NSLA46IZKROU","short_pith_number":"pith:SSDYEPEM","canonical_record":{"source":{"id":"1804.05719","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-16T14:59:11Z","cross_cats_sorted":[],"title_canon_sha256":"1e3591003819c6529d9c39eb70f62f0e7f8de2dbff6ec24f0f46efda89c1a5e3","abstract_canon_sha256":"87254aae6d32549e5ba8ed4cff557c66ee8a85314a33e7dee22b8e0fd845f8f8"},"schema_version":"1.0"},"canonical_sha256":"9487823c8cfc36e7fdb25839e4655175205ae3dc8380f2837edd9d9df373b4c4","source":{"kind":"arxiv","id":"1804.05719","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.05719","created_at":"2026-05-18T00:02:35Z"},{"alias_kind":"arxiv_version","alias_value":"1804.05719v2","created_at":"2026-05-18T00:02:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.05719","created_at":"2026-05-18T00:02:35Z"},{"alias_kind":"pith_short_12","alias_value":"SSDYEPEM7Q3O","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SSDYEPEM7Q3OP7NS","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SSDYEPEM","created_at":"2026-05-18T12:32:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:SSDYEPEM7Q3OP7NSLA46IZKROU","target":"record","payload":{"canonical_record":{"source":{"id":"1804.05719","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-16T14:59:11Z","cross_cats_sorted":[],"title_canon_sha256":"1e3591003819c6529d9c39eb70f62f0e7f8de2dbff6ec24f0f46efda89c1a5e3","abstract_canon_sha256":"87254aae6d32549e5ba8ed4cff557c66ee8a85314a33e7dee22b8e0fd845f8f8"},"schema_version":"1.0"},"canonical_sha256":"9487823c8cfc36e7fdb25839e4655175205ae3dc8380f2837edd9d9df373b4c4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:02:35.185346Z","signature_b64":"7B7FoklfElJpWxEc5xd6O1rOUgZIcFIZFiccq5/bnIcITHNiQIcl2Y9dRZpl08VfhytIXHc8FygtqOxPBlyUCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9487823c8cfc36e7fdb25839e4655175205ae3dc8380f2837edd9d9df373b4c4","last_reissued_at":"2026-05-18T00:02:35.184881Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:02:35.184881Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.05719","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":"2026-05-18T00:02:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RTP6LRXOE+a6HFtuX8a767jdK9p+YdRQz88Xmw/Dz3s9olqcxwlahaejACRxQpqC/EP5/Vc4mX+Rsbxbwgt8Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T19:09:47.718361Z"},"content_sha256":"41cc1e3be86f6c5868f4ed5a05a82dc560f10a065bf668fc591efe2b29234a31","schema_version":"1.0","event_id":"sha256:41cc1e3be86f6c5868f4ed5a05a82dc560f10a065bf668fc591efe2b29234a31"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:SSDYEPEM7Q3OP7NSLA46IZKROU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Defect-induced modification of low-lying excitons and valley selectivity in monolayer transition metal dichalcogenides","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Diana Y. Qiu, Jeffrey B. Neaton, Sivan Refaely-Abramson, Steven G. Louie","submitted_at":"2018-04-16T14:59:11Z","abstract_excerpt":"We study the effect of point-defect chalcogen vacancies on the optical properties of monolayer transition metal dichalcogenides using ab initio GW and Bethe-Salpeter equation calculations. We find that chalcogen vacancies introduce unoccupied in-gap states and occupied resonant defect states within the quasiparticle continuum of the valence band. These defect states give rise to a number of strongly-bound defect excitons and hybridize with excitons of the pristine system, reducing the valley-selective circular dichroism. Our results suggest a pathway to tune spin-valley polarization and other "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.05719","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":""},"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":"2026-05-18T00:02:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XvyibxTczZ2blqy/kfMkZjoblkgrbD1LyKq1MuwLciP1dXu3IC99JaXgAAI5AZEHSqpefblsCQcj5hbHRGz/AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T19:09:47.718800Z"},"content_sha256":"37a2b25c3200f2f7fa09c39fa69c7cbc178b464fa7d95103e1a82d35409f3f68","schema_version":"1.0","event_id":"sha256:37a2b25c3200f2f7fa09c39fa69c7cbc178b464fa7d95103e1a82d35409f3f68"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SSDYEPEM7Q3OP7NSLA46IZKROU/bundle.json","state_url":"https://pith.science/pith/SSDYEPEM7Q3OP7NSLA46IZKROU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SSDYEPEM7Q3OP7NSLA46IZKROU/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":"2026-05-28T19:09:47Z","links":{"resolver":"https://pith.science/pith/SSDYEPEM7Q3OP7NSLA46IZKROU","bundle":"https://pith.science/pith/SSDYEPEM7Q3OP7NSLA46IZKROU/bundle.json","state":"https://pith.science/pith/SSDYEPEM7Q3OP7NSLA46IZKROU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SSDYEPEM7Q3OP7NSLA46IZKROU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:SSDYEPEM7Q3OP7NSLA46IZKROU","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":"87254aae6d32549e5ba8ed4cff557c66ee8a85314a33e7dee22b8e0fd845f8f8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-16T14:59:11Z","title_canon_sha256":"1e3591003819c6529d9c39eb70f62f0e7f8de2dbff6ec24f0f46efda89c1a5e3"},"schema_version":"1.0","source":{"id":"1804.05719","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.05719","created_at":"2026-05-18T00:02:35Z"},{"alias_kind":"arxiv_version","alias_value":"1804.05719v2","created_at":"2026-05-18T00:02:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.05719","created_at":"2026-05-18T00:02:35Z"},{"alias_kind":"pith_short_12","alias_value":"SSDYEPEM7Q3O","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SSDYEPEM7Q3OP7NS","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SSDYEPEM","created_at":"2026-05-18T12:32:53Z"}],"graph_snapshots":[{"event_id":"sha256:37a2b25c3200f2f7fa09c39fa69c7cbc178b464fa7d95103e1a82d35409f3f68","target":"graph","created_at":"2026-05-18T00:02:35Z","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":"We study the effect of point-defect chalcogen vacancies on the optical properties of monolayer transition metal dichalcogenides using ab initio GW and Bethe-Salpeter equation calculations. We find that chalcogen vacancies introduce unoccupied in-gap states and occupied resonant defect states within the quasiparticle continuum of the valence band. These defect states give rise to a number of strongly-bound defect excitons and hybridize with excitons of the pristine system, reducing the valley-selective circular dichroism. Our results suggest a pathway to tune spin-valley polarization and other ","authors_text":"Diana Y. Qiu, Jeffrey B. Neaton, Sivan Refaely-Abramson, Steven G. Louie","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-16T14:59:11Z","title":"Defect-induced modification of low-lying excitons and valley selectivity in monolayer transition metal dichalcogenides"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.05719","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":"sha256:41cc1e3be86f6c5868f4ed5a05a82dc560f10a065bf668fc591efe2b29234a31","target":"record","created_at":"2026-05-18T00:02:35Z","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":"87254aae6d32549e5ba8ed4cff557c66ee8a85314a33e7dee22b8e0fd845f8f8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-16T14:59:11Z","title_canon_sha256":"1e3591003819c6529d9c39eb70f62f0e7f8de2dbff6ec24f0f46efda89c1a5e3"},"schema_version":"1.0","source":{"id":"1804.05719","kind":"arxiv","version":2}},"canonical_sha256":"9487823c8cfc36e7fdb25839e4655175205ae3dc8380f2837edd9d9df373b4c4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9487823c8cfc36e7fdb25839e4655175205ae3dc8380f2837edd9d9df373b4c4","first_computed_at":"2026-05-18T00:02:35.184881Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:02:35.184881Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7B7FoklfElJpWxEc5xd6O1rOUgZIcFIZFiccq5/bnIcITHNiQIcl2Y9dRZpl08VfhytIXHc8FygtqOxPBlyUCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:02:35.185346Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.05719","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:41cc1e3be86f6c5868f4ed5a05a82dc560f10a065bf668fc591efe2b29234a31","sha256:37a2b25c3200f2f7fa09c39fa69c7cbc178b464fa7d95103e1a82d35409f3f68"],"state_sha256":"d99b5066c321eadcc12412f1d6b8689ea83d83c9800ee625a4b6f493039facb4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z9ZO5ds3f3rso0XdQoDxb7Bt9KvjwA42Qv9Dj61p4aZAZygaLHOP75g7h9N0RfXzfhV90+se49Mj/W4k0YJrCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T19:09:47.721172Z","bundle_sha256":"0e63615e2614b293baa3b8881dcb61394852203c0d791847528c63c3d16d4816"}}