{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:USBLDPZ3LFPRCFFM7AXCBPKL4R","short_pith_number":"pith:USBLDPZ3","canonical_record":{"source":{"id":"1410.2885","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-10-10T19:59:40Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"231e45c30459524e19710ccd2913740abb3cba064416c4ec950229ac518dd5cf","abstract_canon_sha256":"fe344ccb2524c12b9188796ba229df9ef5db0fd9589cc8fa994e33beff805e1f"},"schema_version":"1.0"},"canonical_sha256":"a482b1bf3b595f1114acf82e20bd4be450425c429b988ea0381a30dfe19ddd3c","source":{"kind":"arxiv","id":"1410.2885","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.2885","created_at":"2026-05-18T02:40:36Z"},{"alias_kind":"arxiv_version","alias_value":"1410.2885v1","created_at":"2026-05-18T02:40:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.2885","created_at":"2026-05-18T02:40:36Z"},{"alias_kind":"pith_short_12","alias_value":"USBLDPZ3LFPR","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"USBLDPZ3LFPRCFFM","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"USBLDPZ3","created_at":"2026-05-18T12:28:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:USBLDPZ3LFPRCFFM7AXCBPKL4R","target":"record","payload":{"canonical_record":{"source":{"id":"1410.2885","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-10-10T19:59:40Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"231e45c30459524e19710ccd2913740abb3cba064416c4ec950229ac518dd5cf","abstract_canon_sha256":"fe344ccb2524c12b9188796ba229df9ef5db0fd9589cc8fa994e33beff805e1f"},"schema_version":"1.0"},"canonical_sha256":"a482b1bf3b595f1114acf82e20bd4be450425c429b988ea0381a30dfe19ddd3c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:40:36.932063Z","signature_b64":"dn52aXVc9c+TK4LGeY10pAAlVfHLGJYRqV5I2vJncUgNQ1BPb+5PKzyDvpvbAkxkmnfCfFRMcJLtenlNOJKEBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a482b1bf3b595f1114acf82e20bd4be450425c429b988ea0381a30dfe19ddd3c","last_reissued_at":"2026-05-18T02:40:36.931484Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:40:36.931484Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1410.2885","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":"2026-05-18T02:40:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n3AMQ+PVOTha8dgjntTiywejWd5/1ElcpGPI5bRI+Li/G0qApwAAXNZgsD4OzgZrs6qTWL+nbg909DrRqdvRCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T03:22:47.326334Z"},"content_sha256":"439b07e284cf2f0da76cc45965d25d87eeaa4b141d4ee645472d8496a52c1989","schema_version":"1.0","event_id":"sha256:439b07e284cf2f0da76cc45965d25d87eeaa4b141d4ee645472d8496a52c1989"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:USBLDPZ3LFPRCFFM7AXCBPKL4R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Generic Symmetry Breaking Instability of Topological Insulators due to a Novel van Hove Singularity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"Wei Ku, Xiaoxiang Xi, Xu-Gang He","submitted_at":"2014-10-10T19:59:40Z","abstract_excerpt":"We point out that in the deep band-inverted state, topological insulators are generically vulnerable against symmetry breaking instability, due to a divergently large density of states of 1D-like exponent near the chemical potential. This feature at the band edge is associated with a novel van Hove singularity resulting from the development of a Mexican-hat band dispersion. We demonstrate this generic behavior via prototypical 2D and 3D models. This realization not only explains the existing experimental observations of additional phases, but also suggests a route to activate additional functi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.2885","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":"2026-05-18T02:40:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HYBGzkfFf3dYyG7xX0UCgeTo+5WA0O2j0ts6Xc4czCWfjZwLVxiBl67XdST+KBEwc4R80JqZ0KfUSSAN8KAOCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T03:22:47.326696Z"},"content_sha256":"f47bcaf61c958e9591f10d73f7e09c8b7e9a6a2885c1f76db4f645359f1c9e6d","schema_version":"1.0","event_id":"sha256:f47bcaf61c958e9591f10d73f7e09c8b7e9a6a2885c1f76db4f645359f1c9e6d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/USBLDPZ3LFPRCFFM7AXCBPKL4R/bundle.json","state_url":"https://pith.science/pith/USBLDPZ3LFPRCFFM7AXCBPKL4R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/USBLDPZ3LFPRCFFM7AXCBPKL4R/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":"2026-06-01T03:22:47Z","links":{"resolver":"https://pith.science/pith/USBLDPZ3LFPRCFFM7AXCBPKL4R","bundle":"https://pith.science/pith/USBLDPZ3LFPRCFFM7AXCBPKL4R/bundle.json","state":"https://pith.science/pith/USBLDPZ3LFPRCFFM7AXCBPKL4R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/USBLDPZ3LFPRCFFM7AXCBPKL4R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:USBLDPZ3LFPRCFFM7AXCBPKL4R","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":"fe344ccb2524c12b9188796ba229df9ef5db0fd9589cc8fa994e33beff805e1f","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-10-10T19:59:40Z","title_canon_sha256":"231e45c30459524e19710ccd2913740abb3cba064416c4ec950229ac518dd5cf"},"schema_version":"1.0","source":{"id":"1410.2885","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.2885","created_at":"2026-05-18T02:40:36Z"},{"alias_kind":"arxiv_version","alias_value":"1410.2885v1","created_at":"2026-05-18T02:40:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.2885","created_at":"2026-05-18T02:40:36Z"},{"alias_kind":"pith_short_12","alias_value":"USBLDPZ3LFPR","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"USBLDPZ3LFPRCFFM","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"USBLDPZ3","created_at":"2026-05-18T12:28:52Z"}],"graph_snapshots":[{"event_id":"sha256:f47bcaf61c958e9591f10d73f7e09c8b7e9a6a2885c1f76db4f645359f1c9e6d","target":"graph","created_at":"2026-05-18T02:40:36Z","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 point out that in the deep band-inverted state, topological insulators are generically vulnerable against symmetry breaking instability, due to a divergently large density of states of 1D-like exponent near the chemical potential. This feature at the band edge is associated with a novel van Hove singularity resulting from the development of a Mexican-hat band dispersion. We demonstrate this generic behavior via prototypical 2D and 3D models. This realization not only explains the existing experimental observations of additional phases, but also suggests a route to activate additional functi","authors_text":"Wei Ku, Xiaoxiang Xi, Xu-Gang He","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-10-10T19:59:40Z","title":"Generic Symmetry Breaking Instability of Topological Insulators due to a Novel van Hove Singularity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.2885","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":"sha256:439b07e284cf2f0da76cc45965d25d87eeaa4b141d4ee645472d8496a52c1989","target":"record","created_at":"2026-05-18T02:40:36Z","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":"fe344ccb2524c12b9188796ba229df9ef5db0fd9589cc8fa994e33beff805e1f","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-10-10T19:59:40Z","title_canon_sha256":"231e45c30459524e19710ccd2913740abb3cba064416c4ec950229ac518dd5cf"},"schema_version":"1.0","source":{"id":"1410.2885","kind":"arxiv","version":1}},"canonical_sha256":"a482b1bf3b595f1114acf82e20bd4be450425c429b988ea0381a30dfe19ddd3c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a482b1bf3b595f1114acf82e20bd4be450425c429b988ea0381a30dfe19ddd3c","first_computed_at":"2026-05-18T02:40:36.931484Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:40:36.931484Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dn52aXVc9c+TK4LGeY10pAAlVfHLGJYRqV5I2vJncUgNQ1BPb+5PKzyDvpvbAkxkmnfCfFRMcJLtenlNOJKEBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:40:36.932063Z","signed_message":"canonical_sha256_bytes"},"source_id":"1410.2885","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:439b07e284cf2f0da76cc45965d25d87eeaa4b141d4ee645472d8496a52c1989","sha256:f47bcaf61c958e9591f10d73f7e09c8b7e9a6a2885c1f76db4f645359f1c9e6d"],"state_sha256":"bdb3bc5583c8dd1e4e915e0b76ce683cfc4ff5278d26360e0c9ac20727bd9991"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UMGZfrepNxC6ySzJOSQwArUK4H2cpbryEr97SqWBNHXh7u1rOSQ+qArA9fTmUpt95euuHVJK78kB01FNPckdDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T03:22:47.328871Z","bundle_sha256":"3522c337f0e149f2ca5b583e76a4f2e3869c7bdb5cda6ee53c10916c2a6a51f0"}}