{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:ZHRJJBLMDRQ2FUW6ZLVO6I4AV4","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":"e5cb9ba47734d81f6100b279c5ba7a733c6af2b391e970fbd3dabc90ac363b5d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-05-01T02:33:07Z","title_canon_sha256":"4d4627fa0375e763b8a0663cfd8747662076c18e4bb56d3822909359a9cb96b9"},"schema_version":"1.0","source":{"id":"1505.00072","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.00072","created_at":"2026-05-18T01:35:15Z"},{"alias_kind":"arxiv_version","alias_value":"1505.00072v1","created_at":"2026-05-18T01:35:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.00072","created_at":"2026-05-18T01:35:15Z"},{"alias_kind":"pith_short_12","alias_value":"ZHRJJBLMDRQ2","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"ZHRJJBLMDRQ2FUW6","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"ZHRJJBLM","created_at":"2026-05-18T12:29:52Z"}],"graph_snapshots":[{"event_id":"sha256:084034e8ca77e6f5c514e3150e073ed09819112826c08493a893845188865f3b","target":"graph","created_at":"2026-05-18T01:35:15Z","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 term \"surface polarization\" is introduced to describe the in-plane polarization existing at the surface of an insulating crystal when the in-plane surface inversion symmetry is broken. Here, the surface polarization is formulated in terms of a Berry phase, with the hybrid Wannier representation providing a natural basis for study of this effect. Tight binding models are used to demonstrate how the surface polarization reveals itself via the accumulation of charges at the corners/edges for a two dimensional rectangular lattice and for GaAs.","authors_text":"David Vanderbilt, Karin Rabe, Yuanjun Zhou","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-05-01T02:33:07Z","title":"Surface polarization and edge charges"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.00072","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:d3e0af9316175d8dfd80534abdffa476a0dea0b79e77aa191fc5844ef21c4053","target":"record","created_at":"2026-05-18T01:35:15Z","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":"e5cb9ba47734d81f6100b279c5ba7a733c6af2b391e970fbd3dabc90ac363b5d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-05-01T02:33:07Z","title_canon_sha256":"4d4627fa0375e763b8a0663cfd8747662076c18e4bb56d3822909359a9cb96b9"},"schema_version":"1.0","source":{"id":"1505.00072","kind":"arxiv","version":1}},"canonical_sha256":"c9e294856c1c61a2d2decaeaef2380af120fdc3234c5119cd0fc7f87f8cd5996","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c9e294856c1c61a2d2decaeaef2380af120fdc3234c5119cd0fc7f87f8cd5996","first_computed_at":"2026-05-18T01:35:15.971269Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:15.971269Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RLqX4LX9yHr/XokhwyAfJCoT62/z9ZgqEQDYeyXEwqduMfxrBRsJjNf72Isjz6JJQ2dXQZGdYTLqh4dSORfcAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:15.971852Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.00072","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d3e0af9316175d8dfd80534abdffa476a0dea0b79e77aa191fc5844ef21c4053","sha256:084034e8ca77e6f5c514e3150e073ed09819112826c08493a893845188865f3b"],"state_sha256":"4a12d3c3807c110e6c1e6d121f0f69b00efcee174cc67c99791be8cf0602e54b"}