{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:3OFGSPJPG3RWVIUP7UEEIIP5BH","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":"f05f4c381b8856c5a0541b8c697ba21e349506e8b76e95ae599a69f2a213eed3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-11T14:55:20Z","title_canon_sha256":"410d04d929f97b7c2c78f0c55e042173f7898d1b2678e3b42ca571fe858cc7c6"},"schema_version":"1.0","source":{"id":"1804.04030","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.04030","created_at":"2026-05-18T00:12:08Z"},{"alias_kind":"arxiv_version","alias_value":"1804.04030v3","created_at":"2026-05-18T00:12:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.04030","created_at":"2026-05-18T00:12:08Z"},{"alias_kind":"pith_short_12","alias_value":"3OFGSPJPG3RW","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"3OFGSPJPG3RWVIUP","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"3OFGSPJP","created_at":"2026-05-18T12:32:02Z"}],"graph_snapshots":[{"event_id":"sha256:6c61c1eb5d261b753df9e2ee2e6caa720823c5da7b0e9ca952dbfe8e713dee00","target":"graph","created_at":"2026-05-18T00:12:08Z","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 describe and implement a first-principles algorithm based on maximally-localized Wannier functions for calculating the shift-current response of piezoelectric crystals in the independent-particle approximation. The proposed algorithm presents several advantages over existing ones, including full gauge invariance, low computational cost, and a correct treatment of the optical matrix elements with nonlocal pseudopotentials. Band-truncation errors are avoided by a careful formulation of $k\\cdot p$ perturbation theory within the subspace of wannierized bands. The needed ingredients are the matr","authors_text":"Ivo Souza, Julen Iba\\~nez-Azpiroz, Stepan S. Tsirkin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-11T14:55:20Z","title":"Ab initio calculation of the shift photocurrent by Wannier interpolation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.04030","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":"sha256:53cdebcfeae77c3c476e43ce908c4a9fa039164dfc3d96adfb6bf49ef234931f","target":"record","created_at":"2026-05-18T00:12:08Z","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":"f05f4c381b8856c5a0541b8c697ba21e349506e8b76e95ae599a69f2a213eed3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-11T14:55:20Z","title_canon_sha256":"410d04d929f97b7c2c78f0c55e042173f7898d1b2678e3b42ca571fe858cc7c6"},"schema_version":"1.0","source":{"id":"1804.04030","kind":"arxiv","version":3}},"canonical_sha256":"db8a693d2f36e36aa28ffd084421fd09e613deac85fcd1c081de670d24ed5404","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"db8a693d2f36e36aa28ffd084421fd09e613deac85fcd1c081de670d24ed5404","first_computed_at":"2026-05-18T00:12:08.724838Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:08.724838Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sFeiPe5NPDy3bkoLMxVt9lkSCF+5qhjWoZtFu+Sj1kz+EMxzjEkD4u+nZ9UWQaN/UMuXQa63FBvRSktHbfWDBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:08.725299Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.04030","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:53cdebcfeae77c3c476e43ce908c4a9fa039164dfc3d96adfb6bf49ef234931f","sha256:6c61c1eb5d261b753df9e2ee2e6caa720823c5da7b0e9ca952dbfe8e713dee00"],"state_sha256":"00035f44abe71191bf8c6cf6d1ca0b9b1220bdf419b82e362df8e3546b1bd9ea"}