{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:YK3CJXP2DLUJWMFUQSHH7YZN5S","short_pith_number":"pith:YK3CJXP2","canonical_record":{"source":{"id":"1308.5859","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-08-27T13:20:58Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"a65bf7780b6812d5a04add46c76801c625be8d6ce49cdc07986ac2e84557a0f8","abstract_canon_sha256":"c98bfe49be6d3acd1be1b4e2d59eca78c92b61c13b612884e6094e85d311236e"},"schema_version":"1.0"},"canonical_sha256":"c2b624ddfa1ae89b30b4848e7fe32deca64eb74aa421b8f2c750e8ff69ce1212","source":{"kind":"arxiv","id":"1308.5859","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.5859","created_at":"2026-05-18T02:49:31Z"},{"alias_kind":"arxiv_version","alias_value":"1308.5859v2","created_at":"2026-05-18T02:49:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.5859","created_at":"2026-05-18T02:49:31Z"},{"alias_kind":"pith_short_12","alias_value":"YK3CJXP2DLUJ","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"YK3CJXP2DLUJWMFU","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"YK3CJXP2","created_at":"2026-05-18T12:28:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:YK3CJXP2DLUJWMFUQSHH7YZN5S","target":"record","payload":{"canonical_record":{"source":{"id":"1308.5859","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-08-27T13:20:58Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"a65bf7780b6812d5a04add46c76801c625be8d6ce49cdc07986ac2e84557a0f8","abstract_canon_sha256":"c98bfe49be6d3acd1be1b4e2d59eca78c92b61c13b612884e6094e85d311236e"},"schema_version":"1.0"},"canonical_sha256":"c2b624ddfa1ae89b30b4848e7fe32deca64eb74aa421b8f2c750e8ff69ce1212","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:49:31.758377Z","signature_b64":"MmwNoAlqeGQ63IfuExh+TQ+2rW1xvpyykZVYvYFBAmP9Jj30BaAp25eDiQgEYJ9mehMGlV5E5i+9H8CNrr89Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c2b624ddfa1ae89b30b4848e7fe32deca64eb74aa421b8f2c750e8ff69ce1212","last_reissued_at":"2026-05-18T02:49:31.757831Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:49:31.757831Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1308.5859","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":"2026-05-18T02:49:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dFe8JCr04biGK2I1XpTkmCj6xiFUEHJqNN9pvYVnkXhF6+wYgvHsZZ111QOSTnruzq0F/ZUzph/z0trNfk9qDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T17:05:16.253331Z"},"content_sha256":"ea8b07ca25933ede155fb5dd9d92deffad68308766445781e5545cbccf92fd37","schema_version":"1.0","event_id":"sha256:ea8b07ca25933ede155fb5dd9d92deffad68308766445781e5545cbccf92fd37"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:YK3CJXP2DLUJWMFUQSHH7YZN5S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Evidence for topological band inversion of the phase change material Ge2Sb2Te5","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"Alessandro Giussani, Christian Pauly, Emile Rienks, Gustav Bihlmayer, Jaime S\\'anchez-Barriga, Jens Kellner, Marcus Liebmann, Markus Morgenstern, Oliver Rader, Raffaella Calarco, Sven Just","submitted_at":"2013-08-27T13:20:58Z","abstract_excerpt":"We present an angle-resolved photoemission study of a ternary phase change material, namely Ge2Sb2Te5, epitaxially grown on Si(111) in the metastable cubic phase. The observed upper bulk valence band shows a minimum at Gamma-bar being 0.3 eV below the Fermi level E_F and a circular Fermi contour around Gamma-bar with a dispersing diameter of 0.27-0.36 Anstroms^-1. This is in agreement with density functional theory calculations of the Petrov stacking sequence in the cubic phase which exhibits a topological surface state. The topologically trivial cubic KH stacking shows a valence band maximum "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.5859","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":"2026-05-18T02:49:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lGQ/tONmJ87fXCyBaJkKADDkLDVJZad2d9QwiGu72HH7Nlw4PbpLJVnneXd1hJuSkcbtLJWO25RUQWwa95Y+AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T17:05:16.253685Z"},"content_sha256":"2ecbb0b26002bb29bf99ada3c6063841cb8c4f881d2c6dfd25a4fe8684a8b7b9","schema_version":"1.0","event_id":"sha256:2ecbb0b26002bb29bf99ada3c6063841cb8c4f881d2c6dfd25a4fe8684a8b7b9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YK3CJXP2DLUJWMFUQSHH7YZN5S/bundle.json","state_url":"https://pith.science/pith/YK3CJXP2DLUJWMFUQSHH7YZN5S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YK3CJXP2DLUJWMFUQSHH7YZN5S/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":"2026-06-03T17:05:16Z","links":{"resolver":"https://pith.science/pith/YK3CJXP2DLUJWMFUQSHH7YZN5S","bundle":"https://pith.science/pith/YK3CJXP2DLUJWMFUQSHH7YZN5S/bundle.json","state":"https://pith.science/pith/YK3CJXP2DLUJWMFUQSHH7YZN5S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YK3CJXP2DLUJWMFUQSHH7YZN5S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:YK3CJXP2DLUJWMFUQSHH7YZN5S","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":"c98bfe49be6d3acd1be1b4e2d59eca78c92b61c13b612884e6094e85d311236e","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-08-27T13:20:58Z","title_canon_sha256":"a65bf7780b6812d5a04add46c76801c625be8d6ce49cdc07986ac2e84557a0f8"},"schema_version":"1.0","source":{"id":"1308.5859","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.5859","created_at":"2026-05-18T02:49:31Z"},{"alias_kind":"arxiv_version","alias_value":"1308.5859v2","created_at":"2026-05-18T02:49:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.5859","created_at":"2026-05-18T02:49:31Z"},{"alias_kind":"pith_short_12","alias_value":"YK3CJXP2DLUJ","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"YK3CJXP2DLUJWMFU","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"YK3CJXP2","created_at":"2026-05-18T12:28:06Z"}],"graph_snapshots":[{"event_id":"sha256:2ecbb0b26002bb29bf99ada3c6063841cb8c4f881d2c6dfd25a4fe8684a8b7b9","target":"graph","created_at":"2026-05-18T02:49:31Z","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 present an angle-resolved photoemission study of a ternary phase change material, namely Ge2Sb2Te5, epitaxially grown on Si(111) in the metastable cubic phase. The observed upper bulk valence band shows a minimum at Gamma-bar being 0.3 eV below the Fermi level E_F and a circular Fermi contour around Gamma-bar with a dispersing diameter of 0.27-0.36 Anstroms^-1. This is in agreement with density functional theory calculations of the Petrov stacking sequence in the cubic phase which exhibits a topological surface state. The topologically trivial cubic KH stacking shows a valence band maximum ","authors_text":"Alessandro Giussani, Christian Pauly, Emile Rienks, Gustav Bihlmayer, Jaime S\\'anchez-Barriga, Jens Kellner, Marcus Liebmann, Markus Morgenstern, Oliver Rader, Raffaella Calarco, Sven Just","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-08-27T13:20:58Z","title":"Evidence for topological band inversion of the phase change material Ge2Sb2Te5"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.5859","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:ea8b07ca25933ede155fb5dd9d92deffad68308766445781e5545cbccf92fd37","target":"record","created_at":"2026-05-18T02:49:31Z","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":"c98bfe49be6d3acd1be1b4e2d59eca78c92b61c13b612884e6094e85d311236e","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-08-27T13:20:58Z","title_canon_sha256":"a65bf7780b6812d5a04add46c76801c625be8d6ce49cdc07986ac2e84557a0f8"},"schema_version":"1.0","source":{"id":"1308.5859","kind":"arxiv","version":2}},"canonical_sha256":"c2b624ddfa1ae89b30b4848e7fe32deca64eb74aa421b8f2c750e8ff69ce1212","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c2b624ddfa1ae89b30b4848e7fe32deca64eb74aa421b8f2c750e8ff69ce1212","first_computed_at":"2026-05-18T02:49:31.757831Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:49:31.757831Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MmwNoAlqeGQ63IfuExh+TQ+2rW1xvpyykZVYvYFBAmP9Jj30BaAp25eDiQgEYJ9mehMGlV5E5i+9H8CNrr89Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:49:31.758377Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.5859","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ea8b07ca25933ede155fb5dd9d92deffad68308766445781e5545cbccf92fd37","sha256:2ecbb0b26002bb29bf99ada3c6063841cb8c4f881d2c6dfd25a4fe8684a8b7b9"],"state_sha256":"691763a8bb6abe1141f0bc952d19065edd2c6a50994a8cfec230ba253c87d570"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"45aW2YPoMxyr8J2+RAXDyvLUIZvkHipzGpyC1iZ2YhRzmzTyNAJdJdFwr/n5ETuSLnOGW8xsSgFI6LVO8eTnBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T17:05:16.255699Z","bundle_sha256":"13dc68e482de7e48ea0713b6eb82a6c20d04f3f41e21faf6d5ed40fc6e6763e5"}}