{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:WKKHZEYXIOPF6JC24W5LFD5D3B","short_pith_number":"pith:WKKHZEYX","canonical_record":{"source":{"id":"1407.2484","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-07-09T14:03:17Z","cross_cats_sorted":[],"title_canon_sha256":"58c30cb087a87ae82d7a49383e915099394e3aa454bd9511976f04c56e6d4968","abstract_canon_sha256":"24f12cae5743e9e593240541b447ecf5db25e6cfd0a8ba064c265cdeab1f9c33"},"schema_version":"1.0"},"canonical_sha256":"b2947c9317439e5f245ae5bab28fa3d87138dcc07ee465ba05e784706cdf12fb","source":{"kind":"arxiv","id":"1407.2484","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.2484","created_at":"2026-05-18T02:28:11Z"},{"alias_kind":"arxiv_version","alias_value":"1407.2484v1","created_at":"2026-05-18T02:28:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.2484","created_at":"2026-05-18T02:28:11Z"},{"alias_kind":"pith_short_12","alias_value":"WKKHZEYXIOPF","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"WKKHZEYXIOPF6JC2","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"WKKHZEYX","created_at":"2026-05-18T12:28:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:WKKHZEYXIOPF6JC24W5LFD5D3B","target":"record","payload":{"canonical_record":{"source":{"id":"1407.2484","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-07-09T14:03:17Z","cross_cats_sorted":[],"title_canon_sha256":"58c30cb087a87ae82d7a49383e915099394e3aa454bd9511976f04c56e6d4968","abstract_canon_sha256":"24f12cae5743e9e593240541b447ecf5db25e6cfd0a8ba064c265cdeab1f9c33"},"schema_version":"1.0"},"canonical_sha256":"b2947c9317439e5f245ae5bab28fa3d87138dcc07ee465ba05e784706cdf12fb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:28:11.774818Z","signature_b64":"4L5OSb4Unqzmwh0pUdtRCNNZaMTcgf32HC+7AyV76CZxv6sUiVsyM+wK6L5ESNr3NJe66uZcOWQG7gnnupJ9Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b2947c9317439e5f245ae5bab28fa3d87138dcc07ee465ba05e784706cdf12fb","last_reissued_at":"2026-05-18T02:28:11.774218Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:28:11.774218Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.2484","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":"2026-05-18T02:28:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NlBuY0aEm7aatYysXANCO3HWFG1ZpQNabYlII5TPKN7LCNNkhPYkTEFwaGChmlpbs4mO4nKJr2YgYZ6bShU+Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T08:00:47.098758Z"},"content_sha256":"3ac9f3f6f350b07ff3d6a4063389121382ccd407aadddeac7eb51ba609d2b20a","schema_version":"1.0","event_id":"sha256:3ac9f3f6f350b07ff3d6a4063389121382ccd407aadddeac7eb51ba609d2b20a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:WKKHZEYXIOPF6JC24W5LFD5D3B","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spontaneous gap generation on the surface of weakly interacting topological insulators using nonmagnetic impurities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Annica M. Black-Schaffer, Dmitry Yudin","submitted_at":"2014-07-09T14:03:17Z","abstract_excerpt":"Strong nonmagnetic impurities on the surface of three-dimensional topological insulators (TIs) generate localized resonance peaks close to the Dirac point. We show that this results in a strongly reduced critical Coulomb interaction strength to reach a magnetic surface state, following a Stoner-like criterion. Thus even weakly interacting TIs host a finite (local) magnetization around strong nonmagnetic impurities. The local magnetization gives rise to a global energy gap, linearly dependent on the maximum value of the magnetization but decreasing with reduced impurity concentration."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.2484","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":"2026-05-18T02:28:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tq+oufOMN9rCbjJR73neEOUwh4ZCzUrtDZN1QKoFDrFBHmnK86o6b/1DGPkkdCvvDxpHTRBZwbzjMCHLEApQAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T08:00:47.099088Z"},"content_sha256":"a9b582db6830d9e6ddbfff36f02a0c32a486ec45ec741a9ffb8e6434a0da52e3","schema_version":"1.0","event_id":"sha256:a9b582db6830d9e6ddbfff36f02a0c32a486ec45ec741a9ffb8e6434a0da52e3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WKKHZEYXIOPF6JC24W5LFD5D3B/bundle.json","state_url":"https://pith.science/pith/WKKHZEYXIOPF6JC24W5LFD5D3B/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WKKHZEYXIOPF6JC24W5LFD5D3B/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":"2026-06-20T08:00:47Z","links":{"resolver":"https://pith.science/pith/WKKHZEYXIOPF6JC24W5LFD5D3B","bundle":"https://pith.science/pith/WKKHZEYXIOPF6JC24W5LFD5D3B/bundle.json","state":"https://pith.science/pith/WKKHZEYXIOPF6JC24W5LFD5D3B/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WKKHZEYXIOPF6JC24W5LFD5D3B/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:WKKHZEYXIOPF6JC24W5LFD5D3B","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":"24f12cae5743e9e593240541b447ecf5db25e6cfd0a8ba064c265cdeab1f9c33","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-07-09T14:03:17Z","title_canon_sha256":"58c30cb087a87ae82d7a49383e915099394e3aa454bd9511976f04c56e6d4968"},"schema_version":"1.0","source":{"id":"1407.2484","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.2484","created_at":"2026-05-18T02:28:11Z"},{"alias_kind":"arxiv_version","alias_value":"1407.2484v1","created_at":"2026-05-18T02:28:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.2484","created_at":"2026-05-18T02:28:11Z"},{"alias_kind":"pith_short_12","alias_value":"WKKHZEYXIOPF","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"WKKHZEYXIOPF6JC2","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"WKKHZEYX","created_at":"2026-05-18T12:28:54Z"}],"graph_snapshots":[{"event_id":"sha256:a9b582db6830d9e6ddbfff36f02a0c32a486ec45ec741a9ffb8e6434a0da52e3","target":"graph","created_at":"2026-05-18T02:28:11Z","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":"Strong nonmagnetic impurities on the surface of three-dimensional topological insulators (TIs) generate localized resonance peaks close to the Dirac point. We show that this results in a strongly reduced critical Coulomb interaction strength to reach a magnetic surface state, following a Stoner-like criterion. Thus even weakly interacting TIs host a finite (local) magnetization around strong nonmagnetic impurities. The local magnetization gives rise to a global energy gap, linearly dependent on the maximum value of the magnetization but decreasing with reduced impurity concentration.","authors_text":"Annica M. Black-Schaffer, Dmitry Yudin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-07-09T14:03:17Z","title":"Spontaneous gap generation on the surface of weakly interacting topological insulators using nonmagnetic impurities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.2484","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":"sha256:3ac9f3f6f350b07ff3d6a4063389121382ccd407aadddeac7eb51ba609d2b20a","target":"record","created_at":"2026-05-18T02:28:11Z","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":"24f12cae5743e9e593240541b447ecf5db25e6cfd0a8ba064c265cdeab1f9c33","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-07-09T14:03:17Z","title_canon_sha256":"58c30cb087a87ae82d7a49383e915099394e3aa454bd9511976f04c56e6d4968"},"schema_version":"1.0","source":{"id":"1407.2484","kind":"arxiv","version":1}},"canonical_sha256":"b2947c9317439e5f245ae5bab28fa3d87138dcc07ee465ba05e784706cdf12fb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b2947c9317439e5f245ae5bab28fa3d87138dcc07ee465ba05e784706cdf12fb","first_computed_at":"2026-05-18T02:28:11.774218Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:28:11.774218Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4L5OSb4Unqzmwh0pUdtRCNNZaMTcgf32HC+7AyV76CZxv6sUiVsyM+wK6L5ESNr3NJe66uZcOWQG7gnnupJ9Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:28:11.774818Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.2484","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3ac9f3f6f350b07ff3d6a4063389121382ccd407aadddeac7eb51ba609d2b20a","sha256:a9b582db6830d9e6ddbfff36f02a0c32a486ec45ec741a9ffb8e6434a0da52e3"],"state_sha256":"ddf22630535a1a47884c81a7523fc751f3293a9f4118f947b024e36e0a9b4562"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qXO+WyOFIrPpxUPFwhiG6MigiJh3/TcZekemczvsiWMOw5sjPnlg2N3mx55wI0usM8gPEZcwPJ15wCG5s0wWBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T08:00:47.100903Z","bundle_sha256":"94585f7bcabc2e5ae37cbd4cce772d332241396f321d6556d4b25a1e1641d5c5"}}