{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:OG2XOG6CGYHZ6VA4MQWOE2MSL4","short_pith_number":"pith:OG2XOG6C","canonical_record":{"source":{"id":"1207.0073","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-06-30T10:17:34Z","cross_cats_sorted":[],"title_canon_sha256":"5b665ec47c790d0282935afb5e24aea6f05a35ea1cc84cd7d4d9b95e09916e00","abstract_canon_sha256":"c6900a8a31fe49b80f2615490877e752742d619f206fded3fabbff683a5eeed1"},"schema_version":"1.0"},"canonical_sha256":"71b5771bc2360f9f541c642ce269925f3018317fdb74165347e6896481b76287","source":{"kind":"arxiv","id":"1207.0073","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.0073","created_at":"2026-05-18T03:52:00Z"},{"alias_kind":"arxiv_version","alias_value":"1207.0073v1","created_at":"2026-05-18T03:52:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.0073","created_at":"2026-05-18T03:52:00Z"},{"alias_kind":"pith_short_12","alias_value":"OG2XOG6CGYHZ","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"OG2XOG6CGYHZ6VA4","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"OG2XOG6C","created_at":"2026-05-18T12:27:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:OG2XOG6CGYHZ6VA4MQWOE2MSL4","target":"record","payload":{"canonical_record":{"source":{"id":"1207.0073","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-06-30T10:17:34Z","cross_cats_sorted":[],"title_canon_sha256":"5b665ec47c790d0282935afb5e24aea6f05a35ea1cc84cd7d4d9b95e09916e00","abstract_canon_sha256":"c6900a8a31fe49b80f2615490877e752742d619f206fded3fabbff683a5eeed1"},"schema_version":"1.0"},"canonical_sha256":"71b5771bc2360f9f541c642ce269925f3018317fdb74165347e6896481b76287","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:52:00.419941Z","signature_b64":"BxiUVW06e517ntee9iEmFCf7k8xT0Kn0E9ojjMS30MGcymXsDnzI5goQLdPzIUAc9Ca060lQcvuFGlT742fPAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"71b5771bc2360f9f541c642ce269925f3018317fdb74165347e6896481b76287","last_reissued_at":"2026-05-18T03:52:00.419488Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:52:00.419488Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.0073","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":"2026-05-18T03:52:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lSUOnGJMHm0OtaAFxXCJ4e+ib/w6thnrnsDxG52lul3sPR+n4oxZ6QlSsULUwSeEKusbFG4KJ800jBuHXGjEDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T21:13:51.282252Z"},"content_sha256":"6b1853dc16eaac44f3795d7c27ebec4cfc7136335e644bdd84ce47d62af5255d","schema_version":"1.0","event_id":"sha256:6b1853dc16eaac44f3795d7c27ebec4cfc7136335e644bdd84ce47d62af5255d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:OG2XOG6CGYHZ6VA4MQWOE2MSL4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Anomalous thermal expansion of Sb$_2$Te$_3$ topological insulator","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"A. Midya, D. Bhoi, N. Khan, P. Dutta, P. Mandal, S. Shanmukharao Samatham, V. Ganesan","submitted_at":"2012-06-30T10:17:34Z","abstract_excerpt":"We have investigated the temperature dependence of the linear thermal expansion along the hexagonal c axis ($\\Delta L$), in-plane resistivity ($\\rho$), and specific heat ($C_p$) of the topological insulator Sb$_2$Te$_3$ single crystal. $\\Delta L$ exhibits a clear anomaly in the temperature region 204-236 K. The coefficient of linear thermal expansion $\\alpha$ decreases rapidly above 204 K, passes through a deep minimum at around 225 K and then increases abruptly in the region 225-236 K. $\\alpha$ is negative in the interval 221-228 K. The temperature dependence of both $\\alpha$ and $C_p$ can be"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.0073","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":"2026-05-18T03:52:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xGljj15PHsHhzVVr0MCZCU95b4+FRX5ArlahuHk4IY/6EsS7Is2z7+xxUAjfiAk6bJtWEwbz3Sk7tMZug5HHCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T21:13:51.282608Z"},"content_sha256":"fa10a8879ccd5c4911c7d175ac2948a20e3842b04bfd5c750e2a2eead2fe99db","schema_version":"1.0","event_id":"sha256:fa10a8879ccd5c4911c7d175ac2948a20e3842b04bfd5c750e2a2eead2fe99db"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OG2XOG6CGYHZ6VA4MQWOE2MSL4/bundle.json","state_url":"https://pith.science/pith/OG2XOG6CGYHZ6VA4MQWOE2MSL4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OG2XOG6CGYHZ6VA4MQWOE2MSL4/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":"2026-06-01T21:13:51Z","links":{"resolver":"https://pith.science/pith/OG2XOG6CGYHZ6VA4MQWOE2MSL4","bundle":"https://pith.science/pith/OG2XOG6CGYHZ6VA4MQWOE2MSL4/bundle.json","state":"https://pith.science/pith/OG2XOG6CGYHZ6VA4MQWOE2MSL4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OG2XOG6CGYHZ6VA4MQWOE2MSL4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:OG2XOG6CGYHZ6VA4MQWOE2MSL4","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":"c6900a8a31fe49b80f2615490877e752742d619f206fded3fabbff683a5eeed1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-06-30T10:17:34Z","title_canon_sha256":"5b665ec47c790d0282935afb5e24aea6f05a35ea1cc84cd7d4d9b95e09916e00"},"schema_version":"1.0","source":{"id":"1207.0073","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.0073","created_at":"2026-05-18T03:52:00Z"},{"alias_kind":"arxiv_version","alias_value":"1207.0073v1","created_at":"2026-05-18T03:52:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.0073","created_at":"2026-05-18T03:52:00Z"},{"alias_kind":"pith_short_12","alias_value":"OG2XOG6CGYHZ","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"OG2XOG6CGYHZ6VA4","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"OG2XOG6C","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:fa10a8879ccd5c4911c7d175ac2948a20e3842b04bfd5c750e2a2eead2fe99db","target":"graph","created_at":"2026-05-18T03:52:00Z","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":"We have investigated the temperature dependence of the linear thermal expansion along the hexagonal c axis ($\\Delta L$), in-plane resistivity ($\\rho$), and specific heat ($C_p$) of the topological insulator Sb$_2$Te$_3$ single crystal. $\\Delta L$ exhibits a clear anomaly in the temperature region 204-236 K. The coefficient of linear thermal expansion $\\alpha$ decreases rapidly above 204 K, passes through a deep minimum at around 225 K and then increases abruptly in the region 225-236 K. $\\alpha$ is negative in the interval 221-228 K. The temperature dependence of both $\\alpha$ and $C_p$ can be","authors_text":"A. Midya, D. Bhoi, N. Khan, P. Dutta, P. Mandal, S. Shanmukharao Samatham, V. Ganesan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-06-30T10:17:34Z","title":"Anomalous thermal expansion of Sb$_2$Te$_3$ topological insulator"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.0073","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":"sha256:6b1853dc16eaac44f3795d7c27ebec4cfc7136335e644bdd84ce47d62af5255d","target":"record","created_at":"2026-05-18T03:52:00Z","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":"c6900a8a31fe49b80f2615490877e752742d619f206fded3fabbff683a5eeed1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-06-30T10:17:34Z","title_canon_sha256":"5b665ec47c790d0282935afb5e24aea6f05a35ea1cc84cd7d4d9b95e09916e00"},"schema_version":"1.0","source":{"id":"1207.0073","kind":"arxiv","version":1}},"canonical_sha256":"71b5771bc2360f9f541c642ce269925f3018317fdb74165347e6896481b76287","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"71b5771bc2360f9f541c642ce269925f3018317fdb74165347e6896481b76287","first_computed_at":"2026-05-18T03:52:00.419488Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:52:00.419488Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BxiUVW06e517ntee9iEmFCf7k8xT0Kn0E9ojjMS30MGcymXsDnzI5goQLdPzIUAc9Ca060lQcvuFGlT742fPAw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:52:00.419941Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.0073","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6b1853dc16eaac44f3795d7c27ebec4cfc7136335e644bdd84ce47d62af5255d","sha256:fa10a8879ccd5c4911c7d175ac2948a20e3842b04bfd5c750e2a2eead2fe99db"],"state_sha256":"32c5ee4959ed350d695e63fe1dabf32e2d28177468bbc1302e4752815ab4426e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jF9FpkTKD62zLim5x3/+eBwWdPY0isZ3Pxp2ZcpzrM1kYgCe21vi/8KL6OvUez8HWCBwqYarrT6uRYsinpCsAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T21:13:51.284539Z","bundle_sha256":"2f328a5df051adec5d5ee566e30bd6c75db35aa7a1ddfc64930dd97a317e9dc2"}}