{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:RDVBA7JV4X7LUZNQ2XB42JYHRU","short_pith_number":"pith:RDVBA7JV","canonical_record":{"source":{"id":"1808.00619","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-08-02T01:22:37Z","cross_cats_sorted":[],"title_canon_sha256":"27d3804a5486973a6901779877f874f86131fdc2c488218fd5f8901806d137da","abstract_canon_sha256":"c820b57ff83d7153df7a7b22d5c3983e048f0d633affd4a98fdd1ddb1743c3a5"},"schema_version":"1.0"},"canonical_sha256":"88ea107d35e5feba65b0d5c3cd27078d12a071c1db3f08cf3518a63b3bd3f5af","source":{"kind":"arxiv","id":"1808.00619","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.00619","created_at":"2026-05-18T00:06:01Z"},{"alias_kind":"arxiv_version","alias_value":"1808.00619v1","created_at":"2026-05-18T00:06:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.00619","created_at":"2026-05-18T00:06:01Z"},{"alias_kind":"pith_short_12","alias_value":"RDVBA7JV4X7L","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"RDVBA7JV4X7LUZNQ","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"RDVBA7JV","created_at":"2026-05-18T12:32:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:RDVBA7JV4X7LUZNQ2XB42JYHRU","target":"record","payload":{"canonical_record":{"source":{"id":"1808.00619","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-08-02T01:22:37Z","cross_cats_sorted":[],"title_canon_sha256":"27d3804a5486973a6901779877f874f86131fdc2c488218fd5f8901806d137da","abstract_canon_sha256":"c820b57ff83d7153df7a7b22d5c3983e048f0d633affd4a98fdd1ddb1743c3a5"},"schema_version":"1.0"},"canonical_sha256":"88ea107d35e5feba65b0d5c3cd27078d12a071c1db3f08cf3518a63b3bd3f5af","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:06:01.198063Z","signature_b64":"Sc27LRrYk0f2QUlE4+rOkFJFG8h6crbwrl7aIhdRw5GWqtK1uSNyO3KqhsDA74Btz122f/d5D8/imEamz/ByAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"88ea107d35e5feba65b0d5c3cd27078d12a071c1db3f08cf3518a63b3bd3f5af","last_reissued_at":"2026-05-18T00:06:01.197729Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:06:01.197729Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.00619","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":"2026-05-18T00:06:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BuziWz7lAHxVFmOeRpyhVV4xK0PDHgbRAkw2h9h/OH0KjmNKGCfgAhbdx4QKEcIYjMh9nhiPBEUmbrT8vfyeAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T00:39:13.173000Z"},"content_sha256":"bf20f0816237457a89d65ff0e151038aced038e56604eff98f56fb9224b063b6","schema_version":"1.0","event_id":"sha256:bf20f0816237457a89d65ff0e151038aced038e56604eff98f56fb9224b063b6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:RDVBA7JV4X7LUZNQ2XB42JYHRU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Electronic properties of a $\\pi$-conjugated Cairo pentagonal lattice: Direct band gap, ultrahigh carrier mobility and slant Dirac cones","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Junru Wang, Mingwen Zhao, Xiaobiao Liu, Xiaofei Shao, Xiaoming Zhang, Xinrui Zhao","submitted_at":"2018-08-02T01:22:37Z","abstract_excerpt":"Two-dimensional (2D) lattices composed exclusively of pentagons represent an exceptional structure of materials correlated to the famous pentagonal tiling problem in mathematics, but their $\\pi$-conjugation and the related electronic properties have never been reported. Here, we propose a tight-binding (TB) model for a 2D Cairo pentagonal lattice and demonstrate that $p$-$d$ $\\pi$-conjugation in the unique framework leads to intriguing properties, such as an intrinsic direct band gap, ultra-high carrier mobility and even slant Dirac cones. On the basis of first-principles calculations, we pred"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.00619","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":"2026-05-18T00:06:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1f1AwdldEEd27XsDSrLgGeng0ZFeGkbK0Z9IBAYlDuG4flU3mmbIDIgrTfnfeUr9OnBYzEdBft0PnF4ufvkPCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T00:39:13.173393Z"},"content_sha256":"07624581b1ed5354bb60d4cc2cd754dbf88346db354d5fd7f3fe001f0d6756aa","schema_version":"1.0","event_id":"sha256:07624581b1ed5354bb60d4cc2cd754dbf88346db354d5fd7f3fe001f0d6756aa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RDVBA7JV4X7LUZNQ2XB42JYHRU/bundle.json","state_url":"https://pith.science/pith/RDVBA7JV4X7LUZNQ2XB42JYHRU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RDVBA7JV4X7LUZNQ2XB42JYHRU/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":"2026-05-27T00:39:13Z","links":{"resolver":"https://pith.science/pith/RDVBA7JV4X7LUZNQ2XB42JYHRU","bundle":"https://pith.science/pith/RDVBA7JV4X7LUZNQ2XB42JYHRU/bundle.json","state":"https://pith.science/pith/RDVBA7JV4X7LUZNQ2XB42JYHRU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RDVBA7JV4X7LUZNQ2XB42JYHRU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:RDVBA7JV4X7LUZNQ2XB42JYHRU","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":"c820b57ff83d7153df7a7b22d5c3983e048f0d633affd4a98fdd1ddb1743c3a5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-08-02T01:22:37Z","title_canon_sha256":"27d3804a5486973a6901779877f874f86131fdc2c488218fd5f8901806d137da"},"schema_version":"1.0","source":{"id":"1808.00619","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.00619","created_at":"2026-05-18T00:06:01Z"},{"alias_kind":"arxiv_version","alias_value":"1808.00619v1","created_at":"2026-05-18T00:06:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.00619","created_at":"2026-05-18T00:06:01Z"},{"alias_kind":"pith_short_12","alias_value":"RDVBA7JV4X7L","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"RDVBA7JV4X7LUZNQ","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"RDVBA7JV","created_at":"2026-05-18T12:32:50Z"}],"graph_snapshots":[{"event_id":"sha256:07624581b1ed5354bb60d4cc2cd754dbf88346db354d5fd7f3fe001f0d6756aa","target":"graph","created_at":"2026-05-18T00:06:01Z","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":"Two-dimensional (2D) lattices composed exclusively of pentagons represent an exceptional structure of materials correlated to the famous pentagonal tiling problem in mathematics, but their $\\pi$-conjugation and the related electronic properties have never been reported. Here, we propose a tight-binding (TB) model for a 2D Cairo pentagonal lattice and demonstrate that $p$-$d$ $\\pi$-conjugation in the unique framework leads to intriguing properties, such as an intrinsic direct band gap, ultra-high carrier mobility and even slant Dirac cones. On the basis of first-principles calculations, we pred","authors_text":"Junru Wang, Mingwen Zhao, Xiaobiao Liu, Xiaofei Shao, Xiaoming Zhang, Xinrui Zhao","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-08-02T01:22:37Z","title":"Electronic properties of a $\\pi$-conjugated Cairo pentagonal lattice: Direct band gap, ultrahigh carrier mobility and slant Dirac cones"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.00619","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:bf20f0816237457a89d65ff0e151038aced038e56604eff98f56fb9224b063b6","target":"record","created_at":"2026-05-18T00:06:01Z","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":"c820b57ff83d7153df7a7b22d5c3983e048f0d633affd4a98fdd1ddb1743c3a5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-08-02T01:22:37Z","title_canon_sha256":"27d3804a5486973a6901779877f874f86131fdc2c488218fd5f8901806d137da"},"schema_version":"1.0","source":{"id":"1808.00619","kind":"arxiv","version":1}},"canonical_sha256":"88ea107d35e5feba65b0d5c3cd27078d12a071c1db3f08cf3518a63b3bd3f5af","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"88ea107d35e5feba65b0d5c3cd27078d12a071c1db3f08cf3518a63b3bd3f5af","first_computed_at":"2026-05-18T00:06:01.197729Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:06:01.197729Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Sc27LRrYk0f2QUlE4+rOkFJFG8h6crbwrl7aIhdRw5GWqtK1uSNyO3KqhsDA74Btz122f/d5D8/imEamz/ByAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:06:01.198063Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.00619","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bf20f0816237457a89d65ff0e151038aced038e56604eff98f56fb9224b063b6","sha256:07624581b1ed5354bb60d4cc2cd754dbf88346db354d5fd7f3fe001f0d6756aa"],"state_sha256":"cf9c68eb25a0d7404febcf204f5519dabf87e8388a50d8d42fb836f1e6a1867e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pE/M/itGTmytXhIjVuCcRnslfz7ErwPf1rWqp3q7SuZsCRWlg6OlPY417rHv59ZCBE9AP1HCH67V6Ftgp9YvAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T00:39:13.176202Z","bundle_sha256":"9eb72c289e38c60d2a851e93653e23a7c4774378699ee452f8f07a8b010f10ea"}}