{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:TZAWC3IKYS35ATQFYRSTY5L6MS","short_pith_number":"pith:TZAWC3IK","canonical_record":{"source":{"id":"1807.04141","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-11T13:57:15Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.supr-con"],"title_canon_sha256":"039e5d6ba86f2e4301445321802e65d8d0a928017339620a719c5e992dabdea2","abstract_canon_sha256":"d451714dbdbfa64981bf766db14b4650e7356ae3e1afb9b12735a939881fa811"},"schema_version":"1.0"},"canonical_sha256":"9e41616d0ac4b7d04e05c4653c757e64a85c40b2a67b0cc6ec043fbec223804f","source":{"kind":"arxiv","id":"1807.04141","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.04141","created_at":"2026-05-17T23:39:48Z"},{"alias_kind":"arxiv_version","alias_value":"1807.04141v3","created_at":"2026-05-17T23:39:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.04141","created_at":"2026-05-17T23:39:48Z"},{"alias_kind":"pith_short_12","alias_value":"TZAWC3IKYS35","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"TZAWC3IKYS35ATQF","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"TZAWC3IK","created_at":"2026-05-18T12:32:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:TZAWC3IKYS35ATQFYRSTY5L6MS","target":"record","payload":{"canonical_record":{"source":{"id":"1807.04141","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-11T13:57:15Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.supr-con"],"title_canon_sha256":"039e5d6ba86f2e4301445321802e65d8d0a928017339620a719c5e992dabdea2","abstract_canon_sha256":"d451714dbdbfa64981bf766db14b4650e7356ae3e1afb9b12735a939881fa811"},"schema_version":"1.0"},"canonical_sha256":"9e41616d0ac4b7d04e05c4653c757e64a85c40b2a67b0cc6ec043fbec223804f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:39:48.781069Z","signature_b64":"6vLBY8q4cjBTixyZPnl7t3cw0kJ0O+1zkXjHsG6NziDdVi1b04J5H8n9T8reSrxY1sXa/0WV9gSIfh7oivySBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9e41616d0ac4b7d04e05c4653c757e64a85c40b2a67b0cc6ec043fbec223804f","last_reissued_at":"2026-05-17T23:39:48.780452Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:39:48.780452Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.04141","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":"2026-05-17T23:39:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uPn3Xe3WbNdi6WMDgDoBjLUyVvRQC4aHUjDn6Ve1LfJT1PgVGwXAEH/zba/HJMdNeC9TRD+1f3oPxRCdCU7BCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T14:09:53.940011Z"},"content_sha256":"9d95897cd91318c48b135bd40966e0bf7ed4a2f5cef539b0da7c5336e447374c","schema_version":"1.0","event_id":"sha256:9d95897cd91318c48b135bd40966e0bf7ed4a2f5cef539b0da7c5336e447374c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:TZAWC3IKYS35ATQFYRSTY5L6MS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Splitting the hinge mode of higher-order topological insulators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","cond-mat.supr-con"],"primary_cat":"cond-mat.mes-hall","authors_text":"Ady Stern, Raquel Queiroz","submitted_at":"2018-07-11T13:57:15Z","abstract_excerpt":"The surface of a higher order topological insulator (HOTI) comprises a two-dimensional topological insulator (TI) with broken inversion symmetry, whose mass is determined by the microscopic details of the surface such as surface potentials and termination. It hosts a helical mode pinned to selected hinges where the surface gap changes its sign. We study the effect of perturbations that break time-reversal and particle-conservation on this helical mode, such as a Zeeman field and a proximate superconductor. We find that in contrast to the helical modes of inversion symmetric TIs, which are gapp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.04141","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":"2026-05-17T23:39:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SeRwo4+vWN+9s3zO0jLOEkv70mxQ+XLaVdx5BDbnqRXu4/QrwKQb0xp2Nai2RKDjtSBzO4R/Zx36ssl7onBaDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T14:09:53.940699Z"},"content_sha256":"c868cbff84ff7dc692e1190c92bd27937f1f0c394ba74d464b816d62777df65d","schema_version":"1.0","event_id":"sha256:c868cbff84ff7dc692e1190c92bd27937f1f0c394ba74d464b816d62777df65d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TZAWC3IKYS35ATQFYRSTY5L6MS/bundle.json","state_url":"https://pith.science/pith/TZAWC3IKYS35ATQFYRSTY5L6MS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TZAWC3IKYS35ATQFYRSTY5L6MS/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":"2026-05-26T14:09:53Z","links":{"resolver":"https://pith.science/pith/TZAWC3IKYS35ATQFYRSTY5L6MS","bundle":"https://pith.science/pith/TZAWC3IKYS35ATQFYRSTY5L6MS/bundle.json","state":"https://pith.science/pith/TZAWC3IKYS35ATQFYRSTY5L6MS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TZAWC3IKYS35ATQFYRSTY5L6MS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:TZAWC3IKYS35ATQFYRSTY5L6MS","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":"d451714dbdbfa64981bf766db14b4650e7356ae3e1afb9b12735a939881fa811","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-11T13:57:15Z","title_canon_sha256":"039e5d6ba86f2e4301445321802e65d8d0a928017339620a719c5e992dabdea2"},"schema_version":"1.0","source":{"id":"1807.04141","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.04141","created_at":"2026-05-17T23:39:48Z"},{"alias_kind":"arxiv_version","alias_value":"1807.04141v3","created_at":"2026-05-17T23:39:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.04141","created_at":"2026-05-17T23:39:48Z"},{"alias_kind":"pith_short_12","alias_value":"TZAWC3IKYS35","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"TZAWC3IKYS35ATQF","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"TZAWC3IK","created_at":"2026-05-18T12:32:56Z"}],"graph_snapshots":[{"event_id":"sha256:c868cbff84ff7dc692e1190c92bd27937f1f0c394ba74d464b816d62777df65d","target":"graph","created_at":"2026-05-17T23:39:48Z","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":"The surface of a higher order topological insulator (HOTI) comprises a two-dimensional topological insulator (TI) with broken inversion symmetry, whose mass is determined by the microscopic details of the surface such as surface potentials and termination. It hosts a helical mode pinned to selected hinges where the surface gap changes its sign. We study the effect of perturbations that break time-reversal and particle-conservation on this helical mode, such as a Zeeman field and a proximate superconductor. We find that in contrast to the helical modes of inversion symmetric TIs, which are gapp","authors_text":"Ady Stern, Raquel Queiroz","cross_cats":["cond-mat.mtrl-sci","cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-11T13:57:15Z","title":"Splitting the hinge mode of higher-order topological insulators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.04141","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":"sha256:9d95897cd91318c48b135bd40966e0bf7ed4a2f5cef539b0da7c5336e447374c","target":"record","created_at":"2026-05-17T23:39:48Z","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":"d451714dbdbfa64981bf766db14b4650e7356ae3e1afb9b12735a939881fa811","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-07-11T13:57:15Z","title_canon_sha256":"039e5d6ba86f2e4301445321802e65d8d0a928017339620a719c5e992dabdea2"},"schema_version":"1.0","source":{"id":"1807.04141","kind":"arxiv","version":3}},"canonical_sha256":"9e41616d0ac4b7d04e05c4653c757e64a85c40b2a67b0cc6ec043fbec223804f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9e41616d0ac4b7d04e05c4653c757e64a85c40b2a67b0cc6ec043fbec223804f","first_computed_at":"2026-05-17T23:39:48.780452Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:39:48.780452Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6vLBY8q4cjBTixyZPnl7t3cw0kJ0O+1zkXjHsG6NziDdVi1b04J5H8n9T8reSrxY1sXa/0WV9gSIfh7oivySBA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:39:48.781069Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.04141","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9d95897cd91318c48b135bd40966e0bf7ed4a2f5cef539b0da7c5336e447374c","sha256:c868cbff84ff7dc692e1190c92bd27937f1f0c394ba74d464b816d62777df65d"],"state_sha256":"71d86906d5fa18373a8d8c91cd462c0427639ed2cd070d7be06fb816b165ed73"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y7FvG+GsZuT1EFNES0NNXPygl1W71mJ2yfq/LQwke/Ny45gVLlWHd4VUIZwmlVuwwiOkOSK3Uq5xX6tt0nKaCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T14:09:53.944120Z","bundle_sha256":"8112590cb14ff2da23da3a516db456587b2ce02475e5aa032866405c844dbe81"}}