{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:X6BRYQAADB344YY4XCMOULUJVF","short_pith_number":"pith:X6BRYQAA","canonical_record":{"source":{"id":"1410.6167","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-10-22T20:03:27Z","cross_cats_sorted":[],"title_canon_sha256":"400a5e019b244311efc00b00f3da93673e9b239aedaa9e1332ebfb54d74637bb","abstract_canon_sha256":"a018460a1d3b8db85a8d6846ba6ad5c2a781de3b82e43c842b17cc46d0850d06"},"schema_version":"1.0"},"canonical_sha256":"bf831c40001877ce631cb898ea2e89a973f60c0d8d34fa9fca13756084375d7f","source":{"kind":"arxiv","id":"1410.6167","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.6167","created_at":"2026-05-18T01:11:00Z"},{"alias_kind":"arxiv_version","alias_value":"1410.6167v2","created_at":"2026-05-18T01:11:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.6167","created_at":"2026-05-18T01:11:00Z"},{"alias_kind":"pith_short_12","alias_value":"X6BRYQAADB34","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"X6BRYQAADB344YY4","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"X6BRYQAA","created_at":"2026-05-18T12:28:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:X6BRYQAADB344YY4XCMOULUJVF","target":"record","payload":{"canonical_record":{"source":{"id":"1410.6167","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-10-22T20:03:27Z","cross_cats_sorted":[],"title_canon_sha256":"400a5e019b244311efc00b00f3da93673e9b239aedaa9e1332ebfb54d74637bb","abstract_canon_sha256":"a018460a1d3b8db85a8d6846ba6ad5c2a781de3b82e43c842b17cc46d0850d06"},"schema_version":"1.0"},"canonical_sha256":"bf831c40001877ce631cb898ea2e89a973f60c0d8d34fa9fca13756084375d7f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:11:00.368923Z","signature_b64":"IrhLdmt2LGUJ6RJ5jw+WufMTrYZBMmHv2hU/GVAjr4Ou8QLu2WwKIHPjwGS/kUtbJYOjtvloTbQy0vfKszHsDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bf831c40001877ce631cb898ea2e89a973f60c0d8d34fa9fca13756084375d7f","last_reissued_at":"2026-05-18T01:11:00.368215Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:11:00.368215Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1410.6167","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":"2026-05-18T01:11:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sVwkbgit8Glbz378MI584Tm88Z6plxtoQhEzDugqME8HUs5DRo8aQ3qOcc2+xtXT/EzFSOvdFoXANLnF3XWGAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:37:19.891698Z"},"content_sha256":"3cf1eedb0802d742c6be49bf55a5f2b98c14995388d72453801c2e07532f7280","schema_version":"1.0","event_id":"sha256:3cf1eedb0802d742c6be49bf55a5f2b98c14995388d72453801c2e07532f7280"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:X6BRYQAADB344YY4XCMOULUJVF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two-Photon Absorption in Gapped Bilayer Graphene with a Tunable Chemical Potential","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"B. D. Clader, D. S. L. Abergel, M. K. Brinkley","submitted_at":"2014-10-22T20:03:27Z","abstract_excerpt":"Despite the now vast body of two-dimensional materials under study, bilayer graphene remains unique in two ways: it hosts a simultaneously tunable band gap and electron density; and stems from simple fabrication methods. These two advantages underscore why bilayer graphene is critical as a material for optoelectronic applications. In the work that follows, we calculate the one- and two-photon absorption coefficients for degenerate interband absorption in a graphene bilayer hosting an asymmetry gap and adjustable chemical potential--all at finite temperature. Our analysis is comprehensive, char"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.6167","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":"2026-05-18T01:11:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8XewXgT/FqEkLHIuNgKbTuz5Mlrc/YOOoWyDjHySk2ym8pRl+75awhZckTcQ/vcPnKSP7gx1NNAgDbeNw+2iCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:37:19.892304Z"},"content_sha256":"2446e518af2a28b4e1232fd12064f15daab36138a34b0ab925727142732a959e","schema_version":"1.0","event_id":"sha256:2446e518af2a28b4e1232fd12064f15daab36138a34b0ab925727142732a959e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/X6BRYQAADB344YY4XCMOULUJVF/bundle.json","state_url":"https://pith.science/pith/X6BRYQAADB344YY4XCMOULUJVF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/X6BRYQAADB344YY4XCMOULUJVF/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":"2026-05-26T18:37:19Z","links":{"resolver":"https://pith.science/pith/X6BRYQAADB344YY4XCMOULUJVF","bundle":"https://pith.science/pith/X6BRYQAADB344YY4XCMOULUJVF/bundle.json","state":"https://pith.science/pith/X6BRYQAADB344YY4XCMOULUJVF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/X6BRYQAADB344YY4XCMOULUJVF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:X6BRYQAADB344YY4XCMOULUJVF","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":"a018460a1d3b8db85a8d6846ba6ad5c2a781de3b82e43c842b17cc46d0850d06","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-10-22T20:03:27Z","title_canon_sha256":"400a5e019b244311efc00b00f3da93673e9b239aedaa9e1332ebfb54d74637bb"},"schema_version":"1.0","source":{"id":"1410.6167","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.6167","created_at":"2026-05-18T01:11:00Z"},{"alias_kind":"arxiv_version","alias_value":"1410.6167v2","created_at":"2026-05-18T01:11:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.6167","created_at":"2026-05-18T01:11:00Z"},{"alias_kind":"pith_short_12","alias_value":"X6BRYQAADB34","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"X6BRYQAADB344YY4","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"X6BRYQAA","created_at":"2026-05-18T12:28:57Z"}],"graph_snapshots":[{"event_id":"sha256:2446e518af2a28b4e1232fd12064f15daab36138a34b0ab925727142732a959e","target":"graph","created_at":"2026-05-18T01:11:00Z","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":"Despite the now vast body of two-dimensional materials under study, bilayer graphene remains unique in two ways: it hosts a simultaneously tunable band gap and electron density; and stems from simple fabrication methods. These two advantages underscore why bilayer graphene is critical as a material for optoelectronic applications. In the work that follows, we calculate the one- and two-photon absorption coefficients for degenerate interband absorption in a graphene bilayer hosting an asymmetry gap and adjustable chemical potential--all at finite temperature. Our analysis is comprehensive, char","authors_text":"B. D. Clader, D. S. L. Abergel, M. K. Brinkley","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-10-22T20:03:27Z","title":"Two-Photon Absorption in Gapped Bilayer Graphene with a Tunable Chemical Potential"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.6167","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":"sha256:3cf1eedb0802d742c6be49bf55a5f2b98c14995388d72453801c2e07532f7280","target":"record","created_at":"2026-05-18T01:11:00Z","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":"a018460a1d3b8db85a8d6846ba6ad5c2a781de3b82e43c842b17cc46d0850d06","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-10-22T20:03:27Z","title_canon_sha256":"400a5e019b244311efc00b00f3da93673e9b239aedaa9e1332ebfb54d74637bb"},"schema_version":"1.0","source":{"id":"1410.6167","kind":"arxiv","version":2}},"canonical_sha256":"bf831c40001877ce631cb898ea2e89a973f60c0d8d34fa9fca13756084375d7f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bf831c40001877ce631cb898ea2e89a973f60c0d8d34fa9fca13756084375d7f","first_computed_at":"2026-05-18T01:11:00.368215Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:11:00.368215Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IrhLdmt2LGUJ6RJ5jw+WufMTrYZBMmHv2hU/GVAjr4Ou8QLu2WwKIHPjwGS/kUtbJYOjtvloTbQy0vfKszHsDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:11:00.368923Z","signed_message":"canonical_sha256_bytes"},"source_id":"1410.6167","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3cf1eedb0802d742c6be49bf55a5f2b98c14995388d72453801c2e07532f7280","sha256:2446e518af2a28b4e1232fd12064f15daab36138a34b0ab925727142732a959e"],"state_sha256":"9a086e4a7631c4eed0c625460168ae8bc1d15e47ea112665d52f42dfad23eea4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"k5T8bwg0H7wVWAROnI50UFhBErbMs3Iyfr1O23V0U/E8ICMC7dMMfyN/7QjfDoXpuqsrviIy42vbL8msaL/VCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T18:37:19.895329Z","bundle_sha256":"31b2f8158a717811a08c929ac6527c45b2d250d27e7a99e27c4b41000ee50ceb"}}