{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:7YNUYOPDPV7XVIBGZC7634NDJC","short_pith_number":"pith:7YNUYOPD","schema_version":"1.0","canonical_sha256":"fe1b4c39e37d7f7aa026c8bfedf1a34892d060e5a061fbe74f48def074e8ea21","source":{"kind":"arxiv","id":"1806.06312","version":1},"attestation_state":"computed","paper":{"title":"{\\theta}-Tunable Photoluminescence from Interlayer Excitons in Twisted Bilayer Graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Cheol-Joo Kim, Hiral Patel, Jiwoong Park, Lujie Huang, Matt W. Graham","submitted_at":"2018-06-16T23:36:24Z","abstract_excerpt":"Using resonant 2-photon excitation of interlayer electrons in twisted bilayer graphene (tBLG), we resolve photoluminescence (PL) that tunes spectrally with stacking angle, {\\theta}. This weak signal is 4- 5$\\times$ larger than the non-resonant background and is emitted from the interlayer band anti-crossing regions traditionally associated with van Hove singularity resonances. However, our observation of resonant PL emission with delayed ~1 ps electronic thermalization suggests interlayer carriers may instead form bound-excitons. Using both the 2-photon PL and intraband transient absorption sp"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1806.06312","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-06-16T23:36:24Z","cross_cats_sorted":[],"title_canon_sha256":"2d8e3379902ac27f006fab031eaf62928586e9e222aac708f1fb5188585552aa","abstract_canon_sha256":"422597b4eae57e328370732debc586b4a3290bb3ab7ebd6c9934540b5209d550"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:57.213397Z","signature_b64":"tYRi1FBH3Uzm9Ph9aEWM6VTjQQRFaj6tvka1UBTqrNBlzlXOaKW2jkC42eUVA2S7H+E65Ki5xxwZAO7AZ7n4Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fe1b4c39e37d7f7aa026c8bfedf1a34892d060e5a061fbe74f48def074e8ea21","last_reissued_at":"2026-05-17T23:49:57.212904Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:57.212904Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"{\\theta}-Tunable Photoluminescence from Interlayer Excitons in Twisted Bilayer Graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Cheol-Joo Kim, Hiral Patel, Jiwoong Park, Lujie Huang, Matt W. Graham","submitted_at":"2018-06-16T23:36:24Z","abstract_excerpt":"Using resonant 2-photon excitation of interlayer electrons in twisted bilayer graphene (tBLG), we resolve photoluminescence (PL) that tunes spectrally with stacking angle, {\\theta}. This weak signal is 4- 5$\\times$ larger than the non-resonant background and is emitted from the interlayer band anti-crossing regions traditionally associated with van Hove singularity resonances. However, our observation of resonant PL emission with delayed ~1 ps electronic thermalization suggests interlayer carriers may instead form bound-excitons. Using both the 2-photon PL and intraband transient absorption sp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.06312","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":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1806.06312","created_at":"2026-05-17T23:49:57.212967+00:00"},{"alias_kind":"arxiv_version","alias_value":"1806.06312v1","created_at":"2026-05-17T23:49:57.212967+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.06312","created_at":"2026-05-17T23:49:57.212967+00:00"},{"alias_kind":"pith_short_12","alias_value":"7YNUYOPDPV7X","created_at":"2026-05-18T12:32:13.499390+00:00"},{"alias_kind":"pith_short_16","alias_value":"7YNUYOPDPV7XVIBG","created_at":"2026-05-18T12:32:13.499390+00:00"},{"alias_kind":"pith_short_8","alias_value":"7YNUYOPD","created_at":"2026-05-18T12:32:13.499390+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/7YNUYOPDPV7XVIBGZC7634NDJC","json":"https://pith.science/pith/7YNUYOPDPV7XVIBGZC7634NDJC.json","graph_json":"https://pith.science/api/pith-number/7YNUYOPDPV7XVIBGZC7634NDJC/graph.json","events_json":"https://pith.science/api/pith-number/7YNUYOPDPV7XVIBGZC7634NDJC/events.json","paper":"https://pith.science/paper/7YNUYOPD"},"agent_actions":{"view_html":"https://pith.science/pith/7YNUYOPDPV7XVIBGZC7634NDJC","download_json":"https://pith.science/pith/7YNUYOPDPV7XVIBGZC7634NDJC.json","view_paper":"https://pith.science/paper/7YNUYOPD","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1806.06312&json=true","fetch_graph":"https://pith.science/api/pith-number/7YNUYOPDPV7XVIBGZC7634NDJC/graph.json","fetch_events":"https://pith.science/api/pith-number/7YNUYOPDPV7XVIBGZC7634NDJC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7YNUYOPDPV7XVIBGZC7634NDJC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7YNUYOPDPV7XVIBGZC7634NDJC/action/storage_attestation","attest_author":"https://pith.science/pith/7YNUYOPDPV7XVIBGZC7634NDJC/action/author_attestation","sign_citation":"https://pith.science/pith/7YNUYOPDPV7XVIBGZC7634NDJC/action/citation_signature","submit_replication":"https://pith.science/pith/7YNUYOPDPV7XVIBGZC7634NDJC/action/replication_record"}},"created_at":"2026-05-17T23:49:57.212967+00:00","updated_at":"2026-05-17T23:49:57.212967+00:00"}