{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:TY4WYHBUHOCLABLSBC7LBNG6A4","short_pith_number":"pith:TY4WYHBU","canonical_record":{"source":{"id":"1502.04577","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-02-16T15:35:35Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.str-el"],"title_canon_sha256":"8a51127ca1afa7d5d8101a3f5055dbfce2401d30d643815f8fbcb50a830a2ddc","abstract_canon_sha256":"2bc71bece96ab70c7076f9c4ef78f0a6b8aa3b5991978a434b8360175a279fdf"},"schema_version":"1.0"},"canonical_sha256":"9e396c1c343b84b0057208beb0b4de072c242162009ebfc348e0fce24cd94697","source":{"kind":"arxiv","id":"1502.04577","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.04577","created_at":"2026-05-18T01:18:47Z"},{"alias_kind":"arxiv_version","alias_value":"1502.04577v3","created_at":"2026-05-18T01:18:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.04577","created_at":"2026-05-18T01:18:47Z"},{"alias_kind":"pith_short_12","alias_value":"TY4WYHBUHOCL","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"TY4WYHBUHOCLABLS","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"TY4WYHBU","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:TY4WYHBUHOCLABLSBC7LBNG6A4","target":"record","payload":{"canonical_record":{"source":{"id":"1502.04577","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-02-16T15:35:35Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.str-el"],"title_canon_sha256":"8a51127ca1afa7d5d8101a3f5055dbfce2401d30d643815f8fbcb50a830a2ddc","abstract_canon_sha256":"2bc71bece96ab70c7076f9c4ef78f0a6b8aa3b5991978a434b8360175a279fdf"},"schema_version":"1.0"},"canonical_sha256":"9e396c1c343b84b0057208beb0b4de072c242162009ebfc348e0fce24cd94697","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:47.691540Z","signature_b64":"jpCpdOvgxCSjwBRQ/JqkcShcQdHz1PNygG/pn6NJdrR9k9vudEu6tZ9ord8p6uH0J/rmv5UK0++w/9YZRE9+AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9e396c1c343b84b0057208beb0b4de072c242162009ebfc348e0fce24cd94697","last_reissued_at":"2026-05-18T01:18:47.690849Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:47.690849Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.04577","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:18:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AluHngLxybbob+TZs/Dnny/A7Ao5TaS+9NuAgr1MjJCtQAq5V+KmhRm8oGU7Uep5YPaUJt6N6PFZLeXBTPv4BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T11:12:04.929443Z"},"content_sha256":"e62883f132312f17d4f924ba1123bb43ee55b9cacdc2a1f1fe3690c0435ed8b1","schema_version":"1.0","event_id":"sha256:e62883f132312f17d4f924ba1123bb43ee55b9cacdc2a1f1fe3690c0435ed8b1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:TY4WYHBUHOCLABLSBC7LBNG6A4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High-Resolution Faraday Rotation and Electron-Phonon Coupling in Surface States of the Bulk-Insulating Topological Insulator Cu$_{0.02}$Bi$_2$Se$_3$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","cond-mat.str-el"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"C. M. Morris, Liang Wu, M. Brahlek, N. Koirala, N. P. Armitage, R. Vald\\'es Aguilar, S. Oh, Wang-Kong Tse","submitted_at":"2015-02-16T15:35:35Z","abstract_excerpt":"We have utilized time-domain magneto-terahertz spectroscopy to investigate the low frequency optical response of topological insulator Cu$_{0.02}$Bi$_2$Se$_3$ and Bi$_2$Se$_3$ films. With both field and frequency dependence, such experiments give sufficient information to measure the mobility and carrier density of multiple conduction channels simultaneously. We observe sharp cyclotron resonances (CRs) in both materials. The small amount of Cu incorporated into the Cu$_{0.02}$Bi$_2$Se$_3$ induces a true bulk insulator with only a \\textit{single} type of conduction with total sheet carrier dens"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.04577","kind":"arxiv","version":3},"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":"2026-05-18T01:18:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OS/Js0eDhnYyetjZ8SRcZ6DFGybadU555yPy3XPF7FS427Ua5/Qm5XAS86Wj3eRmfZdHf93fpefbTqxTAd6iAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T11:12:04.930020Z"},"content_sha256":"4fb708ec7705943e05c0f465d8a799bf3dbfee1e0f3e0736674aef8497914e7d","schema_version":"1.0","event_id":"sha256:4fb708ec7705943e05c0f465d8a799bf3dbfee1e0f3e0736674aef8497914e7d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TY4WYHBUHOCLABLSBC7LBNG6A4/bundle.json","state_url":"https://pith.science/pith/TY4WYHBUHOCLABLSBC7LBNG6A4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TY4WYHBUHOCLABLSBC7LBNG6A4/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":"2026-05-27T11:12:04Z","links":{"resolver":"https://pith.science/pith/TY4WYHBUHOCLABLSBC7LBNG6A4","bundle":"https://pith.science/pith/TY4WYHBUHOCLABLSBC7LBNG6A4/bundle.json","state":"https://pith.science/pith/TY4WYHBUHOCLABLSBC7LBNG6A4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TY4WYHBUHOCLABLSBC7LBNG6A4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:TY4WYHBUHOCLABLSBC7LBNG6A4","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":"2bc71bece96ab70c7076f9c4ef78f0a6b8aa3b5991978a434b8360175a279fdf","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-02-16T15:35:35Z","title_canon_sha256":"8a51127ca1afa7d5d8101a3f5055dbfce2401d30d643815f8fbcb50a830a2ddc"},"schema_version":"1.0","source":{"id":"1502.04577","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.04577","created_at":"2026-05-18T01:18:47Z"},{"alias_kind":"arxiv_version","alias_value":"1502.04577v3","created_at":"2026-05-18T01:18:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.04577","created_at":"2026-05-18T01:18:47Z"},{"alias_kind":"pith_short_12","alias_value":"TY4WYHBUHOCL","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"TY4WYHBUHOCLABLS","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"TY4WYHBU","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:4fb708ec7705943e05c0f465d8a799bf3dbfee1e0f3e0736674aef8497914e7d","target":"graph","created_at":"2026-05-18T01:18:47Z","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 have utilized time-domain magneto-terahertz spectroscopy to investigate the low frequency optical response of topological insulator Cu$_{0.02}$Bi$_2$Se$_3$ and Bi$_2$Se$_3$ films. With both field and frequency dependence, such experiments give sufficient information to measure the mobility and carrier density of multiple conduction channels simultaneously. We observe sharp cyclotron resonances (CRs) in both materials. The small amount of Cu incorporated into the Cu$_{0.02}$Bi$_2$Se$_3$ induces a true bulk insulator with only a \\textit{single} type of conduction with total sheet carrier dens","authors_text":"C. M. Morris, Liang Wu, M. Brahlek, N. Koirala, N. P. Armitage, R. Vald\\'es Aguilar, S. Oh, Wang-Kong Tse","cross_cats":["cond-mat.mes-hall","cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-02-16T15:35:35Z","title":"High-Resolution Faraday Rotation and Electron-Phonon Coupling in Surface States of the Bulk-Insulating Topological Insulator Cu$_{0.02}$Bi$_2$Se$_3$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.04577","kind":"arxiv","version":3},"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:e62883f132312f17d4f924ba1123bb43ee55b9cacdc2a1f1fe3690c0435ed8b1","target":"record","created_at":"2026-05-18T01:18:47Z","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":"2bc71bece96ab70c7076f9c4ef78f0a6b8aa3b5991978a434b8360175a279fdf","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-02-16T15:35:35Z","title_canon_sha256":"8a51127ca1afa7d5d8101a3f5055dbfce2401d30d643815f8fbcb50a830a2ddc"},"schema_version":"1.0","source":{"id":"1502.04577","kind":"arxiv","version":3}},"canonical_sha256":"9e396c1c343b84b0057208beb0b4de072c242162009ebfc348e0fce24cd94697","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9e396c1c343b84b0057208beb0b4de072c242162009ebfc348e0fce24cd94697","first_computed_at":"2026-05-18T01:18:47.690849Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:18:47.690849Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jpCpdOvgxCSjwBRQ/JqkcShcQdHz1PNygG/pn6NJdrR9k9vudEu6tZ9ord8p6uH0J/rmv5UK0++w/9YZRE9+AA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:18:47.691540Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.04577","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e62883f132312f17d4f924ba1123bb43ee55b9cacdc2a1f1fe3690c0435ed8b1","sha256:4fb708ec7705943e05c0f465d8a799bf3dbfee1e0f3e0736674aef8497914e7d"],"state_sha256":"ba47101afc6c5fe0e0b7bb68cbc5651a19a63c2d205b4aa0c15e1f240c264905"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KJaksqgWK2EHpX0nucOW7HgNWych/GmhZ3yowELH5kHs0dyNjgx49z1/o0IdnrOX8lCpiEhmYO32b4n4jBH0BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T11:12:04.933158Z","bundle_sha256":"c03f675c61a07d39005f5617982ff51f078c035f120766417434ee80dfb425b0"}}