{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:TN7OW55LMVPWJEECJOUJLZVRDK","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":"daa2934d3686a18b74e4c762a478e25f24fd05c306a3caea61f104082ab9b336","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-10-15T18:21:45Z","title_canon_sha256":"8c8e93475636b4df589a8aa124dcb767a0b25f760ef4428a6c07414cbc899d06"},"schema_version":"1.0","source":{"id":"1710.05372","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.05372","created_at":"2026-05-18T00:26:36Z"},{"alias_kind":"arxiv_version","alias_value":"1710.05372v1","created_at":"2026-05-18T00:26:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.05372","created_at":"2026-05-18T00:26:36Z"},{"alias_kind":"pith_short_12","alias_value":"TN7OW55LMVPW","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"TN7OW55LMVPWJEEC","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"TN7OW55L","created_at":"2026-05-18T12:31:46Z"}],"graph_snapshots":[{"event_id":"sha256:48d54a72be5635e23343b8b9119634e4b656129ec33063906a1ff08fbb684a71","target":"graph","created_at":"2026-05-18T00:26:36Z","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":"Understanding defect effect on carrier dynamics is essential for both fundamental physics and potential applications of transition metal dichalcogenides. Here, the phenomenon of oxygen impurities trapping photo-excited carriers has been studied with ultrafast pump-probe spectroscopy. Oxygen impurities are intentionally created in exfoliated multilayer MoSe2 with Ar+ plasma irradiation and air exposure. After plasma treatment, the signal of transient absorption first increases and then decreases, which is a signature of defect capturing carriers. With larger density of oxygen defects, the trapp","authors_text":"Amithraj Valsaraj, Amritesh Rai, Anupam Roy, Feng He, Ke Chen, Leonard F. Register, Sanjay Banerjee, Xianghai Meng, Xiaochuan Xu, Yaguo Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-10-15T18:21:45Z","title":"Carrier Trapping by Oxygen Impurities in Molybdenum Diselenide"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.05372","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:af5dcc7cca90e70ed0dba823e0e3e21d4bb4f2e7e6560bb8f53aa64d66e1994c","target":"record","created_at":"2026-05-18T00:26:36Z","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":"daa2934d3686a18b74e4c762a478e25f24fd05c306a3caea61f104082ab9b336","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-10-15T18:21:45Z","title_canon_sha256":"8c8e93475636b4df589a8aa124dcb767a0b25f760ef4428a6c07414cbc899d06"},"schema_version":"1.0","source":{"id":"1710.05372","kind":"arxiv","version":1}},"canonical_sha256":"9b7eeb77ab655f6490824ba895e6b11aa3870ad34e79f725f4dc8a4379f29f76","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9b7eeb77ab655f6490824ba895e6b11aa3870ad34e79f725f4dc8a4379f29f76","first_computed_at":"2026-05-18T00:26:36.262562Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:26:36.262562Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P0GlyON7P9w5b5S3C4V9mkyd7dmyFEldFWFEBHJYC9DIQM/wld+rJOgJkUDVpMK9FVBecSiINyDAs0jFQuvyAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:26:36.263169Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.05372","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:af5dcc7cca90e70ed0dba823e0e3e21d4bb4f2e7e6560bb8f53aa64d66e1994c","sha256:48d54a72be5635e23343b8b9119634e4b656129ec33063906a1ff08fbb684a71"],"state_sha256":"ed83cffea432152569b9e3863be840769f1653c035ff9eea19bb8fc298d22b7e"}