{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:J62LMDN3WVNOSTZU3JKRRCV26I","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":"507826160df29f72c97aa0c62cbaf19195f682d8d50a041de888b062b0b48c2a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-06-06T16:03:29Z","title_canon_sha256":"56aa5111e9aaaba4cba0321c673997328e55aa305fed09aed9c5b93ae427ee75"},"schema_version":"1.0","source":{"id":"1106.1107","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.1107","created_at":"2026-05-18T04:20:36Z"},{"alias_kind":"arxiv_version","alias_value":"1106.1107v1","created_at":"2026-05-18T04:20:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.1107","created_at":"2026-05-18T04:20:36Z"},{"alias_kind":"pith_short_12","alias_value":"J62LMDN3WVNO","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_16","alias_value":"J62LMDN3WVNOSTZU","created_at":"2026-05-18T12:26:32Z"},{"alias_kind":"pith_short_8","alias_value":"J62LMDN3","created_at":"2026-05-18T12:26:32Z"}],"graph_snapshots":[{"event_id":"sha256:49f49eb5b560a8b8eb0e2e1ed03fdd08643d26e7d8b7c1d10132187962fa460f","target":"graph","created_at":"2026-05-18T04:20:36Z","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":"We report an experimental Raman study of few-layer graphene after chemical doping achieved by a plasma process in CHF$_3$ gas. A systematic reduction of both the splitting and the area of the 2D band is observed with increasing the doping level. Both effects can be ascribed to the electron-electron correlation, which on the one hand reduces the electron-phonon coupling strength, and on the other hand affects the probability of the double resonant Raman process.","authors_text":"Matteo Bruna, Stefano Borini","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-06-06T16:03:29Z","title":"Raman signature of electron-electron correlation in chemically doped few-layer graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.1107","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":"sha256:8d99d9c59d01bfc380d94ac633a40ddceb1bc14c5a6c1e0d0a9a6e389fc69168","target":"record","created_at":"2026-05-18T04:20:36Z","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":"507826160df29f72c97aa0c62cbaf19195f682d8d50a041de888b062b0b48c2a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-06-06T16:03:29Z","title_canon_sha256":"56aa5111e9aaaba4cba0321c673997328e55aa305fed09aed9c5b93ae427ee75"},"schema_version":"1.0","source":{"id":"1106.1107","kind":"arxiv","version":1}},"canonical_sha256":"4fb4b60dbbb55ae94f34da55188abaf230bd495599d9e9e16891b4d37cbee38e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4fb4b60dbbb55ae94f34da55188abaf230bd495599d9e9e16891b4d37cbee38e","first_computed_at":"2026-05-18T04:20:36.422021Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:20:36.422021Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xggKVot0sD7K7tRCZ4siRNj9wLLTYVx0frijGhX8q/R41dI4F1vwR+pxyHC4fGV1PJJxmWiZpKagSAP/N/lnAg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:20:36.422782Z","signed_message":"canonical_sha256_bytes"},"source_id":"1106.1107","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8d99d9c59d01bfc380d94ac633a40ddceb1bc14c5a6c1e0d0a9a6e389fc69168","sha256:49f49eb5b560a8b8eb0e2e1ed03fdd08643d26e7d8b7c1d10132187962fa460f"],"state_sha256":"556da259644b487013bb8731b97d39233dd6318a3e44d2e44413d96eefb445a9"}