{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:YGPYQZMYZLTMYKZ7HB56DT3JLT","short_pith_number":"pith:YGPYQZMY","schema_version":"1.0","canonical_sha256":"c19f886598cae6cc2b3f387be1cf695ce72757c024fc7988e8c7a31eff7110b3","source":{"kind":"arxiv","id":"2303.07808","version":2},"attestation_state":"computed","paper":{"title":"Emergence of Three-fold Symmetric Helical Photocurrents in Epitaxial Low Twinned Bi$_2$Se$_3$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Blair C. Connelly, George J. de Coster, Patrick J. Taylor","submitted_at":"2023-03-14T11:27:52Z","abstract_excerpt":"We observe enhanced three-fold symmetric helicity-dependent topological photocurrents using time-domain THz spectroscopy in epitaxially-grown Bi2Se3 with reduced crystallographic twinning. It is established how twinned crystal domains introduce competing responses that obscure inherent nonlinear optical responses of the intrinsic crystal structure. Minimizing this defect reveals strong nonlinear optical response currents whose magnitude and direction depend on the alignment of the excitation to the crystal axes and follow the three-fold rotational symmetry of the crystal structure. Notably, th"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2303.07808","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2023-03-14T11:27:52Z","cross_cats_sorted":[],"title_canon_sha256":"8e0a50d6514a945e5f1eaba242556abbd0491c4c76d36c34a9269abab7066ed1","abstract_canon_sha256":"c787ea7a19ed50e715146b1c9a10249176997242457c6e8ae7ebfc815ba9ba3a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:53:16.086598Z","signature_b64":"Viwgk9cGdIlQyckiyTdtvnL+77qU3y/qlsp3KXbl1Hlmy6uhA0WpMDLnS6jjrAJZYeIhV69v8AcuA8ym192ZBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c19f886598cae6cc2b3f387be1cf695ce72757c024fc7988e8c7a31eff7110b3","last_reissued_at":"2026-07-05T05:53:16.086154Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:53:16.086154Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Emergence of Three-fold Symmetric Helical Photocurrents in Epitaxial Low Twinned Bi$_2$Se$_3$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Blair C. Connelly, George J. de Coster, Patrick J. Taylor","submitted_at":"2023-03-14T11:27:52Z","abstract_excerpt":"We observe enhanced three-fold symmetric helicity-dependent topological photocurrents using time-domain THz spectroscopy in epitaxially-grown Bi2Se3 with reduced crystallographic twinning. It is established how twinned crystal domains introduce competing responses that obscure inherent nonlinear optical responses of the intrinsic crystal structure. Minimizing this defect reveals strong nonlinear optical response currents whose magnitude and direction depend on the alignment of the excitation to the crystal axes and follow the three-fold rotational symmetry of the crystal structure. Notably, th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2303.07808","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2303.07808/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2303.07808","created_at":"2026-07-05T05:53:16.086218+00:00"},{"alias_kind":"arxiv_version","alias_value":"2303.07808v2","created_at":"2026-07-05T05:53:16.086218+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2303.07808","created_at":"2026-07-05T05:53:16.086218+00:00"},{"alias_kind":"pith_short_12","alias_value":"YGPYQZMYZLTM","created_at":"2026-07-05T05:53:16.086218+00:00"},{"alias_kind":"pith_short_16","alias_value":"YGPYQZMYZLTMYKZ7","created_at":"2026-07-05T05:53:16.086218+00:00"},{"alias_kind":"pith_short_8","alias_value":"YGPYQZMY","created_at":"2026-07-05T05:53:16.086218+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/YGPYQZMYZLTMYKZ7HB56DT3JLT","json":"https://pith.science/pith/YGPYQZMYZLTMYKZ7HB56DT3JLT.json","graph_json":"https://pith.science/api/pith-number/YGPYQZMYZLTMYKZ7HB56DT3JLT/graph.json","events_json":"https://pith.science/api/pith-number/YGPYQZMYZLTMYKZ7HB56DT3JLT/events.json","paper":"https://pith.science/paper/YGPYQZMY"},"agent_actions":{"view_html":"https://pith.science/pith/YGPYQZMYZLTMYKZ7HB56DT3JLT","download_json":"https://pith.science/pith/YGPYQZMYZLTMYKZ7HB56DT3JLT.json","view_paper":"https://pith.science/paper/YGPYQZMY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2303.07808&json=true","fetch_graph":"https://pith.science/api/pith-number/YGPYQZMYZLTMYKZ7HB56DT3JLT/graph.json","fetch_events":"https://pith.science/api/pith-number/YGPYQZMYZLTMYKZ7HB56DT3JLT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YGPYQZMYZLTMYKZ7HB56DT3JLT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YGPYQZMYZLTMYKZ7HB56DT3JLT/action/storage_attestation","attest_author":"https://pith.science/pith/YGPYQZMYZLTMYKZ7HB56DT3JLT/action/author_attestation","sign_citation":"https://pith.science/pith/YGPYQZMYZLTMYKZ7HB56DT3JLT/action/citation_signature","submit_replication":"https://pith.science/pith/YGPYQZMYZLTMYKZ7HB56DT3JLT/action/replication_record"}},"created_at":"2026-07-05T05:53:16.086218+00:00","updated_at":"2026-07-05T05:53:16.086218+00:00"}