{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:GZA55SENGCJRFYVA6KMCUK2HBY","short_pith_number":"pith:GZA55SEN","canonical_record":{"source":{"id":"1809.10689","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-09-27T18:00:03Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"title_canon_sha256":"6fae1f20525d3d8cf3936cc57013062cad24889e67d8cf198c89a5d7e581272b","abstract_canon_sha256":"5f6e21fedbe2bc0750b4da09bd56762d8fd01d3485bf7e4a994932441d0939d1"},"schema_version":"1.0"},"canonical_sha256":"3641dec88d309312e2a0f2982a2b470e29314f0c6f7f508ee2195aa205bf87b4","source":{"kind":"arxiv","id":"1809.10689","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.10689","created_at":"2026-05-17T23:48:33Z"},{"alias_kind":"arxiv_version","alias_value":"1809.10689v3","created_at":"2026-05-17T23:48:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.10689","created_at":"2026-05-17T23:48:33Z"},{"alias_kind":"pith_short_12","alias_value":"GZA55SENGCJR","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GZA55SENGCJRFYVA","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GZA55SEN","created_at":"2026-05-18T12:32:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:GZA55SENGCJRFYVA6KMCUK2HBY","target":"record","payload":{"canonical_record":{"source":{"id":"1809.10689","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-09-27T18:00:03Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"title_canon_sha256":"6fae1f20525d3d8cf3936cc57013062cad24889e67d8cf198c89a5d7e581272b","abstract_canon_sha256":"5f6e21fedbe2bc0750b4da09bd56762d8fd01d3485bf7e4a994932441d0939d1"},"schema_version":"1.0"},"canonical_sha256":"3641dec88d309312e2a0f2982a2b470e29314f0c6f7f508ee2195aa205bf87b4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:48:33.750233Z","signature_b64":"aXGeRpAJfhIaOG2gtZ3/Z850WADka7ybmHKchsL48/VIJ5FmaF7m3aRJ/8Cl9QH5ssfR8cqw6TImmH/Bcy2FBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3641dec88d309312e2a0f2982a2b470e29314f0c6f7f508ee2195aa205bf87b4","last_reissued_at":"2026-05-17T23:48:33.749765Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:48:33.749765Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.10689","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":"2026-05-17T23:48:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zAQRKvem4gNoFmiw/Yenl7YhVxJRx6HqblRjtQWNVE8r5R55FU9HqE1VJjtl3yemVpWmKDDlKV6KtUaAMjckCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:30:27.635584Z"},"content_sha256":"cf6495f59e22ce1131eef59ea09f454adbbeea7a88b25184c66c67d779134baa","schema_version":"1.0","event_id":"sha256:cf6495f59e22ce1131eef59ea09f454adbbeea7a88b25184c66c67d779134baa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:GZA55SENGCJRFYVA6KMCUK2HBY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Topological nature of step edge states on the surface of topological crystalline insulator Pb$_{0.7}$Sn$_{0.3}$Se","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"primary_cat":"cond-mat.str-el","authors_text":"Chang-Yan Wang, Daniel Walkup, Davide Iaia, Fangcheng Chou, R. Sankar, Vidya Madhavan, Yuan-Ming Lu, Yulia Maximenko","submitted_at":"2018-09-27T18:00:03Z","abstract_excerpt":"In addition to novel surface states, topological insulators can also exhibit robust gapless states at crystalline defects. Step edges constitute a class of common defects on the surface of crystals. In this work we establish the topological nature of one-dimensional (1D) bound states localized at step edges of the [001] surface of a topological crystalline insulator (TCI) Pb$_{0.7}$Sn$_{0.3}$Se, both theoretically and experimentally. We show that the topological stability of the step edge states arises from an emergent particle-hole symmetry of the surface low-energy physics, and demonstrate t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.10689","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":"2026-05-17T23:48:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jmP9DFkveBQ8pSCtWOaBvGcCjutNOOf19wSOAScouFiLFLf1UVVRTHZ5Fv872l8VseBgYDUFGtYRDetGW2JXDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:30:27.635987Z"},"content_sha256":"249f7149c6fa5201324f83192e964b8c93fea97203bbf234db67925d3424fcbd","schema_version":"1.0","event_id":"sha256:249f7149c6fa5201324f83192e964b8c93fea97203bbf234db67925d3424fcbd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GZA55SENGCJRFYVA6KMCUK2HBY/bundle.json","state_url":"https://pith.science/pith/GZA55SENGCJRFYVA6KMCUK2HBY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GZA55SENGCJRFYVA6KMCUK2HBY/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":"2026-05-30T22:30:27Z","links":{"resolver":"https://pith.science/pith/GZA55SENGCJRFYVA6KMCUK2HBY","bundle":"https://pith.science/pith/GZA55SENGCJRFYVA6KMCUK2HBY/bundle.json","state":"https://pith.science/pith/GZA55SENGCJRFYVA6KMCUK2HBY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GZA55SENGCJRFYVA6KMCUK2HBY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:GZA55SENGCJRFYVA6KMCUK2HBY","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":"5f6e21fedbe2bc0750b4da09bd56762d8fd01d3485bf7e4a994932441d0939d1","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-09-27T18:00:03Z","title_canon_sha256":"6fae1f20525d3d8cf3936cc57013062cad24889e67d8cf198c89a5d7e581272b"},"schema_version":"1.0","source":{"id":"1809.10689","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.10689","created_at":"2026-05-17T23:48:33Z"},{"alias_kind":"arxiv_version","alias_value":"1809.10689v3","created_at":"2026-05-17T23:48:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.10689","created_at":"2026-05-17T23:48:33Z"},{"alias_kind":"pith_short_12","alias_value":"GZA55SENGCJR","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GZA55SENGCJRFYVA","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GZA55SEN","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:249f7149c6fa5201324f83192e964b8c93fea97203bbf234db67925d3424fcbd","target":"graph","created_at":"2026-05-17T23:48:33Z","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":"In addition to novel surface states, topological insulators can also exhibit robust gapless states at crystalline defects. Step edges constitute a class of common defects on the surface of crystals. In this work we establish the topological nature of one-dimensional (1D) bound states localized at step edges of the [001] surface of a topological crystalline insulator (TCI) Pb$_{0.7}$Sn$_{0.3}$Se, both theoretically and experimentally. We show that the topological stability of the step edge states arises from an emergent particle-hole symmetry of the surface low-energy physics, and demonstrate t","authors_text":"Chang-Yan Wang, Daniel Walkup, Davide Iaia, Fangcheng Chou, R. Sankar, Vidya Madhavan, Yuan-Ming Lu, Yulia Maximenko","cross_cats":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-09-27T18:00:03Z","title":"Topological nature of step edge states on the surface of topological crystalline insulator Pb$_{0.7}$Sn$_{0.3}$Se"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.10689","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:cf6495f59e22ce1131eef59ea09f454adbbeea7a88b25184c66c67d779134baa","target":"record","created_at":"2026-05-17T23:48:33Z","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":"5f6e21fedbe2bc0750b4da09bd56762d8fd01d3485bf7e4a994932441d0939d1","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-09-27T18:00:03Z","title_canon_sha256":"6fae1f20525d3d8cf3936cc57013062cad24889e67d8cf198c89a5d7e581272b"},"schema_version":"1.0","source":{"id":"1809.10689","kind":"arxiv","version":3}},"canonical_sha256":"3641dec88d309312e2a0f2982a2b470e29314f0c6f7f508ee2195aa205bf87b4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3641dec88d309312e2a0f2982a2b470e29314f0c6f7f508ee2195aa205bf87b4","first_computed_at":"2026-05-17T23:48:33.749765Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:48:33.749765Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aXGeRpAJfhIaOG2gtZ3/Z850WADka7ybmHKchsL48/VIJ5FmaF7m3aRJ/8Cl9QH5ssfR8cqw6TImmH/Bcy2FBA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:48:33.750233Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.10689","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cf6495f59e22ce1131eef59ea09f454adbbeea7a88b25184c66c67d779134baa","sha256:249f7149c6fa5201324f83192e964b8c93fea97203bbf234db67925d3424fcbd"],"state_sha256":"9b232176dbd0d31373d00fb97673499afb77b1361466055c74a84e4fb39b22c4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C7EIuLIWXIEmvdzwm9p+GojAPDlIOk4EkkSomz6MShG4hR78IVMtkvYHmIEi/dLRkCueXrZvAfk2YwYaJD81Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T22:30:27.638267Z","bundle_sha256":"250be766e505c39cf7e904f64e7aabfef23fd680974038916524829b5fff3651"}}