{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:AHBOLTLUUOJCNK6IGQAU76AEKV","short_pith_number":"pith:AHBOLTLU","schema_version":"1.0","canonical_sha256":"01c2e5cd74a39226abc834014ff80455442b5ace7224a8f85656f5774ebfe44f","source":{"kind":"arxiv","id":"1305.4024","version":1},"attestation_state":"computed","paper":{"title":"Spin and energy relaxation in germanium studied by spin-polarized direct-gap photoluminescence","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Giorgioni, E. Grilli, F. Pezzoli, G. Isella, H. Dery, L. Qing, M. Guzzi","submitted_at":"2013-05-17T09:26:54Z","abstract_excerpt":"Spin orientation of photoexcited carriers and their energy relaxation is investigated in bulk Ge by studying spin-polarized recombination across the direct band gap. The control over parameters such as doping and lattice temperature is shown to yield high polarization degree, namely larger than 40%, as well as a fine-tuning of the angular momentum of the emitted light with a complete reversal between right- and left-handed circular polarization. By combining the measurement of the optical polarization state of band-edge luminescence and Monte Carlo simulations of carrier dynamics, we show that"},"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":"1305.4024","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-05-17T09:26:54Z","cross_cats_sorted":[],"title_canon_sha256":"84e7f7b3932758f7731bb841713bbe53593e6a7d2cb70284a58e664230898143","abstract_canon_sha256":"f8bfacf0d85553330946dda6439c99d3bf19e649675ef2fcd786958fe7117e12"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:17:46.321967Z","signature_b64":"eug+ex7gCf7wD+PBxEiJnvz5HFJw+raZvYjiqImQ7kiT40ZtsFLvwWkfFDYnhk0Yr0DOLDbrcgqR8yWLRBzIAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"01c2e5cd74a39226abc834014ff80455442b5ace7224a8f85656f5774ebfe44f","last_reissued_at":"2026-05-18T03:17:46.321025Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:17:46.321025Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spin and energy relaxation in germanium studied by spin-polarized direct-gap photoluminescence","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Giorgioni, E. Grilli, F. Pezzoli, G. Isella, H. Dery, L. Qing, M. Guzzi","submitted_at":"2013-05-17T09:26:54Z","abstract_excerpt":"Spin orientation of photoexcited carriers and their energy relaxation is investigated in bulk Ge by studying spin-polarized recombination across the direct band gap. The control over parameters such as doping and lattice temperature is shown to yield high polarization degree, namely larger than 40%, as well as a fine-tuning of the angular momentum of the emitted light with a complete reversal between right- and left-handed circular polarization. By combining the measurement of the optical polarization state of band-edge luminescence and Monte Carlo simulations of carrier dynamics, we show that"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.4024","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1305.4024","created_at":"2026-05-18T03:17:46.321182+00:00"},{"alias_kind":"arxiv_version","alias_value":"1305.4024v1","created_at":"2026-05-18T03:17:46.321182+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.4024","created_at":"2026-05-18T03:17:46.321182+00:00"},{"alias_kind":"pith_short_12","alias_value":"AHBOLTLUUOJC","created_at":"2026-05-18T12:27:38.830355+00:00"},{"alias_kind":"pith_short_16","alias_value":"AHBOLTLUUOJCNK6I","created_at":"2026-05-18T12:27:38.830355+00:00"},{"alias_kind":"pith_short_8","alias_value":"AHBOLTLU","created_at":"2026-05-18T12:27:38.830355+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/AHBOLTLUUOJCNK6IGQAU76AEKV","json":"https://pith.science/pith/AHBOLTLUUOJCNK6IGQAU76AEKV.json","graph_json":"https://pith.science/api/pith-number/AHBOLTLUUOJCNK6IGQAU76AEKV/graph.json","events_json":"https://pith.science/api/pith-number/AHBOLTLUUOJCNK6IGQAU76AEKV/events.json","paper":"https://pith.science/paper/AHBOLTLU"},"agent_actions":{"view_html":"https://pith.science/pith/AHBOLTLUUOJCNK6IGQAU76AEKV","download_json":"https://pith.science/pith/AHBOLTLUUOJCNK6IGQAU76AEKV.json","view_paper":"https://pith.science/paper/AHBOLTLU","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1305.4024&json=true","fetch_graph":"https://pith.science/api/pith-number/AHBOLTLUUOJCNK6IGQAU76AEKV/graph.json","fetch_events":"https://pith.science/api/pith-number/AHBOLTLUUOJCNK6IGQAU76AEKV/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/AHBOLTLUUOJCNK6IGQAU76AEKV/action/timestamp_anchor","attest_storage":"https://pith.science/pith/AHBOLTLUUOJCNK6IGQAU76AEKV/action/storage_attestation","attest_author":"https://pith.science/pith/AHBOLTLUUOJCNK6IGQAU76AEKV/action/author_attestation","sign_citation":"https://pith.science/pith/AHBOLTLUUOJCNK6IGQAU76AEKV/action/citation_signature","submit_replication":"https://pith.science/pith/AHBOLTLUUOJCNK6IGQAU76AEKV/action/replication_record"}},"created_at":"2026-05-18T03:17:46.321182+00:00","updated_at":"2026-05-18T03:17:46.321182+00:00"}