{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:GTL4NAN5DWVRGXIRD3JNUYDF5N","short_pith_number":"pith:GTL4NAN5","canonical_record":{"source":{"id":"1711.08177","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-11-22T08:44:26Z","cross_cats_sorted":[],"title_canon_sha256":"2fd565a0ca7fc3253334e80c4c60f8f11638b40b0e327b5b6c7f9723d40ae075","abstract_canon_sha256":"b132e244d079575fbb2122cab1d4e2c178f8c007ec21eab6e9fe2565d2ad20a8"},"schema_version":"1.0"},"canonical_sha256":"34d7c681bd1dab135d111ed2da6065eb6dadda206d21ef8ca85b795eff5e7f5f","source":{"kind":"arxiv","id":"1711.08177","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.08177","created_at":"2026-05-18T00:24:33Z"},{"alias_kind":"arxiv_version","alias_value":"1711.08177v1","created_at":"2026-05-18T00:24:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.08177","created_at":"2026-05-18T00:24:33Z"},{"alias_kind":"pith_short_12","alias_value":"GTL4NAN5DWVR","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"GTL4NAN5DWVRGXIR","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"GTL4NAN5","created_at":"2026-05-18T12:31:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:GTL4NAN5DWVRGXIRD3JNUYDF5N","target":"record","payload":{"canonical_record":{"source":{"id":"1711.08177","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-11-22T08:44:26Z","cross_cats_sorted":[],"title_canon_sha256":"2fd565a0ca7fc3253334e80c4c60f8f11638b40b0e327b5b6c7f9723d40ae075","abstract_canon_sha256":"b132e244d079575fbb2122cab1d4e2c178f8c007ec21eab6e9fe2565d2ad20a8"},"schema_version":"1.0"},"canonical_sha256":"34d7c681bd1dab135d111ed2da6065eb6dadda206d21ef8ca85b795eff5e7f5f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:24:33.287527Z","signature_b64":"yK/Pqee1mtFMtOYI9mNhRehi0ssaXrYmVzy5cX9moPHZBuSAvf2/qoMJ74Qm18hf6wpJiqxUmT8bYyayfD89Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"34d7c681bd1dab135d111ed2da6065eb6dadda206d21ef8ca85b795eff5e7f5f","last_reissued_at":"2026-05-18T00:24:33.287118Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:24:33.287118Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.08177","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":"2026-05-18T00:24:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rfBgZXBR96XJIATGRxeFP5aNGf+JvZcYsYUWlUgLWZWfzne/27F1RpsZ4Gp5UVrKfslTBB81M7s0NOxQ2LnvDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T20:26:12.174398Z"},"content_sha256":"309cb82234417e26c04735471fc058068b0457a620a0ef2c9c7896be7598d233","schema_version":"1.0","event_id":"sha256:309cb82234417e26c04735471fc058068b0457a620a0ef2c9c7896be7598d233"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:GTL4NAN5DWVRGXIRD3JNUYDF5N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Interband absorption edge in topological insulators Bi$_2$(Te$_{1-x}$Se$_x$)$_3$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Dubroka, G. Bauer, G. Springholz, H. Steiner, J. Huml\\'i\\v{c}ek, M. Hron\\v{c}ek, M. Orlita, O. Caha, P. Fri\\v{s}, V. Hol\\'y","submitted_at":"2017-11-22T08:44:26Z","abstract_excerpt":"We have investigated the optical properties of thin films of topological insulators Bi$_{2}$Te$_{3}$, Bi$_{2}$Se$_{3}$ and their alloys Bi$_2$(Te$_{1-x}$Se$_x$)$_3$ on BaF$_{2}$ substrates by a combination of infrared ellipsometry and reflectivity in the energy range from 0.06 to 6.5 eV. For the onset of interband absorption in Bi$_2$Se$_3$, after the correction for the Burstein-Moss effect, we find the value of direct bandgap of $215\\pm10$ meV at 10 K. Our data supports the picture that Bi$_2$Se$_3$ has a direct band gap located at the $\\Gamma$ point in the Brillouin zone and that the valence"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.08177","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":"2026-05-18T00:24:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m4KYdcSv45zdaUeKOveQhj7IRPKw9ZF37XJSiYpiPKtAxaiIo99f9TfTctWKQRQDE/4abMgHljzzk3IvQg7jCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T20:26:12.174987Z"},"content_sha256":"19e7432196af5277b6eaab0307b8b83aa8edf50fa1b305ed1b172104c3c9ad41","schema_version":"1.0","event_id":"sha256:19e7432196af5277b6eaab0307b8b83aa8edf50fa1b305ed1b172104c3c9ad41"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GTL4NAN5DWVRGXIRD3JNUYDF5N/bundle.json","state_url":"https://pith.science/pith/GTL4NAN5DWVRGXIRD3JNUYDF5N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GTL4NAN5DWVRGXIRD3JNUYDF5N/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":"2026-05-25T20:26:12Z","links":{"resolver":"https://pith.science/pith/GTL4NAN5DWVRGXIRD3JNUYDF5N","bundle":"https://pith.science/pith/GTL4NAN5DWVRGXIRD3JNUYDF5N/bundle.json","state":"https://pith.science/pith/GTL4NAN5DWVRGXIRD3JNUYDF5N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GTL4NAN5DWVRGXIRD3JNUYDF5N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:GTL4NAN5DWVRGXIRD3JNUYDF5N","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":"b132e244d079575fbb2122cab1d4e2c178f8c007ec21eab6e9fe2565d2ad20a8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-11-22T08:44:26Z","title_canon_sha256":"2fd565a0ca7fc3253334e80c4c60f8f11638b40b0e327b5b6c7f9723d40ae075"},"schema_version":"1.0","source":{"id":"1711.08177","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.08177","created_at":"2026-05-18T00:24:33Z"},{"alias_kind":"arxiv_version","alias_value":"1711.08177v1","created_at":"2026-05-18T00:24:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.08177","created_at":"2026-05-18T00:24:33Z"},{"alias_kind":"pith_short_12","alias_value":"GTL4NAN5DWVR","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"GTL4NAN5DWVRGXIR","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"GTL4NAN5","created_at":"2026-05-18T12:31:18Z"}],"graph_snapshots":[{"event_id":"sha256:19e7432196af5277b6eaab0307b8b83aa8edf50fa1b305ed1b172104c3c9ad41","target":"graph","created_at":"2026-05-18T00:24:33Z","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 investigated the optical properties of thin films of topological insulators Bi$_{2}$Te$_{3}$, Bi$_{2}$Se$_{3}$ and their alloys Bi$_2$(Te$_{1-x}$Se$_x$)$_3$ on BaF$_{2}$ substrates by a combination of infrared ellipsometry and reflectivity in the energy range from 0.06 to 6.5 eV. For the onset of interband absorption in Bi$_2$Se$_3$, after the correction for the Burstein-Moss effect, we find the value of direct bandgap of $215\\pm10$ meV at 10 K. Our data supports the picture that Bi$_2$Se$_3$ has a direct band gap located at the $\\Gamma$ point in the Brillouin zone and that the valence","authors_text":"A. Dubroka, G. Bauer, G. Springholz, H. Steiner, J. Huml\\'i\\v{c}ek, M. Hron\\v{c}ek, M. Orlita, O. Caha, P. Fri\\v{s}, V. Hol\\'y","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-11-22T08:44:26Z","title":"Interband absorption edge in topological insulators Bi$_2$(Te$_{1-x}$Se$_x$)$_3$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.08177","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":"sha256:309cb82234417e26c04735471fc058068b0457a620a0ef2c9c7896be7598d233","target":"record","created_at":"2026-05-18T00:24:33Z","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":"b132e244d079575fbb2122cab1d4e2c178f8c007ec21eab6e9fe2565d2ad20a8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-11-22T08:44:26Z","title_canon_sha256":"2fd565a0ca7fc3253334e80c4c60f8f11638b40b0e327b5b6c7f9723d40ae075"},"schema_version":"1.0","source":{"id":"1711.08177","kind":"arxiv","version":1}},"canonical_sha256":"34d7c681bd1dab135d111ed2da6065eb6dadda206d21ef8ca85b795eff5e7f5f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"34d7c681bd1dab135d111ed2da6065eb6dadda206d21ef8ca85b795eff5e7f5f","first_computed_at":"2026-05-18T00:24:33.287118Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:33.287118Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yK/Pqee1mtFMtOYI9mNhRehi0ssaXrYmVzy5cX9moPHZBuSAvf2/qoMJ74Qm18hf6wpJiqxUmT8bYyayfD89Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:33.287527Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.08177","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:309cb82234417e26c04735471fc058068b0457a620a0ef2c9c7896be7598d233","sha256:19e7432196af5277b6eaab0307b8b83aa8edf50fa1b305ed1b172104c3c9ad41"],"state_sha256":"fa2cfbfadb39a1e7d7f2a1d19e2dadb1638302f12a7c2dc0ce9c4317fd24766d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KdxrjgIDwqhM1EJpDcE6wiedd/o6cuO3/Mp6vchl9HZ9lZzL6JG509h26tyFdHqesAWMpBJ61EfsMjyb5fi2Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T20:26:12.178208Z","bundle_sha256":"92a21d3e6b6623b7259431fa0aabc337d7ce5702528a15277ea9049b5ac24439"}}