{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:WZVOSIKINRNXS2KWBXWOP7I3ZW","short_pith_number":"pith:WZVOSIKI","canonical_record":{"source":{"id":"1404.0973","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-04-03T15:32:51Z","cross_cats_sorted":[],"title_canon_sha256":"2b1e8987b69ef853fa4ddf171ea331b2ccd2fcdbd21b950ce5c1ef3a64b8ec97","abstract_canon_sha256":"11539e911bcf1d0868dec42933101e340b98331bbefae91b6ac712eeb13e0c8a"},"schema_version":"1.0"},"canonical_sha256":"b66ae921486c5b7969560dece7fd1bcd91dd6cbfb98db377d6931caf4425c29d","source":{"kind":"arxiv","id":"1404.0973","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.0973","created_at":"2026-05-18T02:43:02Z"},{"alias_kind":"arxiv_version","alias_value":"1404.0973v1","created_at":"2026-05-18T02:43:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.0973","created_at":"2026-05-18T02:43:02Z"},{"alias_kind":"pith_short_12","alias_value":"WZVOSIKINRNX","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"WZVOSIKINRNXS2KW","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"WZVOSIKI","created_at":"2026-05-18T12:28:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:WZVOSIKINRNXS2KWBXWOP7I3ZW","target":"record","payload":{"canonical_record":{"source":{"id":"1404.0973","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-04-03T15:32:51Z","cross_cats_sorted":[],"title_canon_sha256":"2b1e8987b69ef853fa4ddf171ea331b2ccd2fcdbd21b950ce5c1ef3a64b8ec97","abstract_canon_sha256":"11539e911bcf1d0868dec42933101e340b98331bbefae91b6ac712eeb13e0c8a"},"schema_version":"1.0"},"canonical_sha256":"b66ae921486c5b7969560dece7fd1bcd91dd6cbfb98db377d6931caf4425c29d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:43:02.296481Z","signature_b64":"ISjoP+cMwpXevRVHUEpJjp7BVizFEstR8O09uElnBjnddQc4a5tFQHC+2TAjvWgEL+P1+KJKLdmeXw93kEOLDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b66ae921486c5b7969560dece7fd1bcd91dd6cbfb98db377d6931caf4425c29d","last_reissued_at":"2026-05-18T02:43:02.295899Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:43:02.295899Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1404.0973","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":"2026-05-18T02:43:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vPvuSAlOVr+MqoVWnzbE1m4GGY4XpGPWiWAtNvZwiYmpWMgxCSzt/pq1EfMAY2nhgCcGfDFYBSRM/M2igu77Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:13:11.601222Z"},"content_sha256":"c917b43ac08bf8a20cd78fd986f9a015d2198258f3cc9d79cd593e4954e05183","schema_version":"1.0","event_id":"sha256:c917b43ac08bf8a20cd78fd986f9a015d2198258f3cc9d79cd593e4954e05183"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:WZVOSIKINRNXS2KWBXWOP7I3ZW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chern insulator at a magnetic rocksalt interface","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"David Vanderbilt, Kevin F. Garrity","submitted_at":"2014-04-03T15:32:51Z","abstract_excerpt":"Considerable efforts have recently been devoted to the experimental realization of a two-dimensional Chern insulator, i.e., a system displaying a quantum anomalous Hall effect. However, existing approaches such as those based on magnetic doping of topological-insulator thin films have resulted in small band gaps, restricting the effect to low temperatures. We use first-principles calculations to demonstrate that an interface between thin films of the topologically trivial ferromagnetic insulators EuO and GdN can result in a band inversion and a non-zero Chern number. Both materials are stoichi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.0973","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":"2026-05-18T02:43:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"krBQUIrpEbK2QAXdWL1FvASWVVO5XKu3QMZsxarXsn+NFjVqO1j/britEJW0R5Du48efKkwOlu8b6vV5w6giCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:13:11.601588Z"},"content_sha256":"9029451e1123b2cc4b71bf6a90bdc42f5190432b11bb55806ed934197f189933","schema_version":"1.0","event_id":"sha256:9029451e1123b2cc4b71bf6a90bdc42f5190432b11bb55806ed934197f189933"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WZVOSIKINRNXS2KWBXWOP7I3ZW/bundle.json","state_url":"https://pith.science/pith/WZVOSIKINRNXS2KWBXWOP7I3ZW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WZVOSIKINRNXS2KWBXWOP7I3ZW/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":"2026-06-01T04:13:11Z","links":{"resolver":"https://pith.science/pith/WZVOSIKINRNXS2KWBXWOP7I3ZW","bundle":"https://pith.science/pith/WZVOSIKINRNXS2KWBXWOP7I3ZW/bundle.json","state":"https://pith.science/pith/WZVOSIKINRNXS2KWBXWOP7I3ZW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WZVOSIKINRNXS2KWBXWOP7I3ZW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:WZVOSIKINRNXS2KWBXWOP7I3ZW","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":"11539e911bcf1d0868dec42933101e340b98331bbefae91b6ac712eeb13e0c8a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-04-03T15:32:51Z","title_canon_sha256":"2b1e8987b69ef853fa4ddf171ea331b2ccd2fcdbd21b950ce5c1ef3a64b8ec97"},"schema_version":"1.0","source":{"id":"1404.0973","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.0973","created_at":"2026-05-18T02:43:02Z"},{"alias_kind":"arxiv_version","alias_value":"1404.0973v1","created_at":"2026-05-18T02:43:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.0973","created_at":"2026-05-18T02:43:02Z"},{"alias_kind":"pith_short_12","alias_value":"WZVOSIKINRNX","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"WZVOSIKINRNXS2KW","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"WZVOSIKI","created_at":"2026-05-18T12:28:54Z"}],"graph_snapshots":[{"event_id":"sha256:9029451e1123b2cc4b71bf6a90bdc42f5190432b11bb55806ed934197f189933","target":"graph","created_at":"2026-05-18T02:43:02Z","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":"Considerable efforts have recently been devoted to the experimental realization of a two-dimensional Chern insulator, i.e., a system displaying a quantum anomalous Hall effect. However, existing approaches such as those based on magnetic doping of topological-insulator thin films have resulted in small band gaps, restricting the effect to low temperatures. We use first-principles calculations to demonstrate that an interface between thin films of the topologically trivial ferromagnetic insulators EuO and GdN can result in a band inversion and a non-zero Chern number. Both materials are stoichi","authors_text":"David Vanderbilt, Kevin F. Garrity","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-04-03T15:32:51Z","title":"Chern insulator at a magnetic rocksalt interface"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.0973","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:c917b43ac08bf8a20cd78fd986f9a015d2198258f3cc9d79cd593e4954e05183","target":"record","created_at":"2026-05-18T02:43:02Z","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":"11539e911bcf1d0868dec42933101e340b98331bbefae91b6ac712eeb13e0c8a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-04-03T15:32:51Z","title_canon_sha256":"2b1e8987b69ef853fa4ddf171ea331b2ccd2fcdbd21b950ce5c1ef3a64b8ec97"},"schema_version":"1.0","source":{"id":"1404.0973","kind":"arxiv","version":1}},"canonical_sha256":"b66ae921486c5b7969560dece7fd1bcd91dd6cbfb98db377d6931caf4425c29d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b66ae921486c5b7969560dece7fd1bcd91dd6cbfb98db377d6931caf4425c29d","first_computed_at":"2026-05-18T02:43:02.295899Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:43:02.295899Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ISjoP+cMwpXevRVHUEpJjp7BVizFEstR8O09uElnBjnddQc4a5tFQHC+2TAjvWgEL+P1+KJKLdmeXw93kEOLDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:43:02.296481Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.0973","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c917b43ac08bf8a20cd78fd986f9a015d2198258f3cc9d79cd593e4954e05183","sha256:9029451e1123b2cc4b71bf6a90bdc42f5190432b11bb55806ed934197f189933"],"state_sha256":"38a0e9a753f3d26f1dd5df5e59c42fc36ed2bf53116333fd360b4039b16b2025"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TqRkpYhd46JhxaTZ/I1j3nv0NpxClljRxnowo1kOAMrvoO4iRRG3cB0+43zLDjRO+IUHWP5PJ/kQUxUk5AFqCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T04:13:11.603584Z","bundle_sha256":"ed850eaccd267e08090421cef99016ba779a4d9c02cc4925ef0268533bc922b0"}}