{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:N7AZ7BGKOMHYXC432Q25FRJCES","short_pith_number":"pith:N7AZ7BGK","canonical_record":{"source":{"id":"1811.00997","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-11-02T17:31:18Z","cross_cats_sorted":["cond-mat.mtrl-sci","physics.optics"],"title_canon_sha256":"16cba95140aade67d57ac29ce56e4c5356be1b33552c6050cb456229e97f16fb","abstract_canon_sha256":"87dd508127e6b7d8577dae0db2a55c6afb2d9cc5b82423e6a0860c43e5400dec"},"schema_version":"1.0"},"canonical_sha256":"6fc19f84ca730f8b8b9bd435d2c5222498681b4b38eceec11d9949cb51cf1d93","source":{"kind":"arxiv","id":"1811.00997","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.00997","created_at":"2026-05-18T00:01:39Z"},{"alias_kind":"arxiv_version","alias_value":"1811.00997v1","created_at":"2026-05-18T00:01:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.00997","created_at":"2026-05-18T00:01:39Z"},{"alias_kind":"pith_short_12","alias_value":"N7AZ7BGKOMHY","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"N7AZ7BGKOMHYXC43","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"N7AZ7BGK","created_at":"2026-05-18T12:32:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:N7AZ7BGKOMHYXC432Q25FRJCES","target":"record","payload":{"canonical_record":{"source":{"id":"1811.00997","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-11-02T17:31:18Z","cross_cats_sorted":["cond-mat.mtrl-sci","physics.optics"],"title_canon_sha256":"16cba95140aade67d57ac29ce56e4c5356be1b33552c6050cb456229e97f16fb","abstract_canon_sha256":"87dd508127e6b7d8577dae0db2a55c6afb2d9cc5b82423e6a0860c43e5400dec"},"schema_version":"1.0"},"canonical_sha256":"6fc19f84ca730f8b8b9bd435d2c5222498681b4b38eceec11d9949cb51cf1d93","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:39.716528Z","signature_b64":"2Y5mM0v+9xC4/UFH+zhS71+TIIW7tHKRVwijNSaI+tU7MBphd6RddWB7S1QjbLAIKR1w5C7INNlMx/honPLXAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6fc19f84ca730f8b8b9bd435d2c5222498681b4b38eceec11d9949cb51cf1d93","last_reissued_at":"2026-05-18T00:01:39.716042Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:39.716042Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.00997","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:01:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9oGZdrkwhQAe+aQMvWLAUqJJNcFdofjHV0oKfO0fvrjecGOonjPGPcNuXN//fY9X1w3Dgke32FRi/XhwXwVKDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T14:55:58.134266Z"},"content_sha256":"a1cd80faf4306bd15a484dbdfa8dc14c11193cb3ee913281558f40e5d6c3a03d","schema_version":"1.0","event_id":"sha256:a1cd80faf4306bd15a484dbdfa8dc14c11193cb3ee913281558f40e5d6c3a03d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:N7AZ7BGKOMHYXC432Q25FRJCES","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tunable out-of-plane excitons in 2D single crystal perovskites","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","physics.optics"],"primary_cat":"cond-mat.mes-hall","authors_text":"A. Fieramosca, A. Rizzo, B. L. T. Rosa, D. Ballarini, D. Gerace, D. Sanvitto, G. Cruciani, G. Gigli, L. C. Andreani, L. De Marco, L. Dominici, L. Polimeno, M. De Giorgi, M. Passoni","submitted_at":"2018-11-02T17:31:18Z","abstract_excerpt":"Hybrid organic-inorganic perovskites have emerged as very promising materials for photonic applications, thanks to the great synthetic versatility that allows to tune their optical properties. In the two-dimensional (2D) crystalline form, these materials behave as multiple quantum-well heterostructures with stable excitonic resonances up to room temperature. In this work strong light-matter coupling in 2D perovskite single-crystal flakes is observed, and the polarization-dependent exciton-polariton response is used to disclose new excitonic features. For the first time, an out-of-plane compone"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.00997","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:01:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p0xOaV8fg1D2vBE069PgYqnDuBBFnkNvZpHb41PZEFql1ufDqAviL9A8itU0b+DDbCe9KAU0WyChFdJ6viJcCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T14:55:58.134644Z"},"content_sha256":"268b2a9c87d26afc83a890aa04433f34fc145b4da6d7fd82e3c084a2cf7c5f52","schema_version":"1.0","event_id":"sha256:268b2a9c87d26afc83a890aa04433f34fc145b4da6d7fd82e3c084a2cf7c5f52"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/N7AZ7BGKOMHYXC432Q25FRJCES/bundle.json","state_url":"https://pith.science/pith/N7AZ7BGKOMHYXC432Q25FRJCES/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/N7AZ7BGKOMHYXC432Q25FRJCES/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":"2026-06-03T14:55:58Z","links":{"resolver":"https://pith.science/pith/N7AZ7BGKOMHYXC432Q25FRJCES","bundle":"https://pith.science/pith/N7AZ7BGKOMHYXC432Q25FRJCES/bundle.json","state":"https://pith.science/pith/N7AZ7BGKOMHYXC432Q25FRJCES/state.json","well_known_bundle":"https://pith.science/.well-known/pith/N7AZ7BGKOMHYXC432Q25FRJCES/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:N7AZ7BGKOMHYXC432Q25FRJCES","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":"87dd508127e6b7d8577dae0db2a55c6afb2d9cc5b82423e6a0860c43e5400dec","cross_cats_sorted":["cond-mat.mtrl-sci","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-11-02T17:31:18Z","title_canon_sha256":"16cba95140aade67d57ac29ce56e4c5356be1b33552c6050cb456229e97f16fb"},"schema_version":"1.0","source":{"id":"1811.00997","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.00997","created_at":"2026-05-18T00:01:39Z"},{"alias_kind":"arxiv_version","alias_value":"1811.00997v1","created_at":"2026-05-18T00:01:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.00997","created_at":"2026-05-18T00:01:39Z"},{"alias_kind":"pith_short_12","alias_value":"N7AZ7BGKOMHY","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"N7AZ7BGKOMHYXC43","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"N7AZ7BGK","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:268b2a9c87d26afc83a890aa04433f34fc145b4da6d7fd82e3c084a2cf7c5f52","target":"graph","created_at":"2026-05-18T00:01:39Z","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":"Hybrid organic-inorganic perovskites have emerged as very promising materials for photonic applications, thanks to the great synthetic versatility that allows to tune their optical properties. In the two-dimensional (2D) crystalline form, these materials behave as multiple quantum-well heterostructures with stable excitonic resonances up to room temperature. In this work strong light-matter coupling in 2D perovskite single-crystal flakes is observed, and the polarization-dependent exciton-polariton response is used to disclose new excitonic features. For the first time, an out-of-plane compone","authors_text":"A. Fieramosca, A. Rizzo, B. L. T. Rosa, D. Ballarini, D. Gerace, D. Sanvitto, G. Cruciani, G. Gigli, L. C. Andreani, L. De Marco, L. Dominici, L. Polimeno, M. De Giorgi, M. Passoni","cross_cats":["cond-mat.mtrl-sci","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-11-02T17:31:18Z","title":"Tunable out-of-plane excitons in 2D single crystal perovskites"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.00997","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:a1cd80faf4306bd15a484dbdfa8dc14c11193cb3ee913281558f40e5d6c3a03d","target":"record","created_at":"2026-05-18T00:01:39Z","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":"87dd508127e6b7d8577dae0db2a55c6afb2d9cc5b82423e6a0860c43e5400dec","cross_cats_sorted":["cond-mat.mtrl-sci","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-11-02T17:31:18Z","title_canon_sha256":"16cba95140aade67d57ac29ce56e4c5356be1b33552c6050cb456229e97f16fb"},"schema_version":"1.0","source":{"id":"1811.00997","kind":"arxiv","version":1}},"canonical_sha256":"6fc19f84ca730f8b8b9bd435d2c5222498681b4b38eceec11d9949cb51cf1d93","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6fc19f84ca730f8b8b9bd435d2c5222498681b4b38eceec11d9949cb51cf1d93","first_computed_at":"2026-05-18T00:01:39.716042Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:39.716042Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2Y5mM0v+9xC4/UFH+zhS71+TIIW7tHKRVwijNSaI+tU7MBphd6RddWB7S1QjbLAIKR1w5C7INNlMx/honPLXAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:39.716528Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.00997","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a1cd80faf4306bd15a484dbdfa8dc14c11193cb3ee913281558f40e5d6c3a03d","sha256:268b2a9c87d26afc83a890aa04433f34fc145b4da6d7fd82e3c084a2cf7c5f52"],"state_sha256":"3a21c2f0bf13a00ab2ad8d1969d6f3b43b37c50f089b2c24ff69ed15f5ee9fde"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rSc3GugD+ZnMCO4pJ8LmfD/U41ZgOyMTWyotCxt1RdXD2CDDTJEjmZXKvHdjnsBR6/SDCUtHXYWdHLBlAA0LDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T14:55:58.136843Z","bundle_sha256":"501b9fc6ae5aa78fd85c68e4e1c2af7426e37ebbb98d7432b7a42ffde0f35932"}}