{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:H5BQIA2POXQH3SCFMOLGRDEQJ7","short_pith_number":"pith:H5BQIA2P","schema_version":"1.0","canonical_sha256":"3f4304034f75e07dc8456396688c904fe4826f1b226ce203f02b4226bc18c260","source":{"kind":"arxiv","id":"1306.5847","version":1},"attestation_state":"computed","paper":{"title":"Efficient spin injection through a crystalline AlOx tunnel barrier prepared by the oxidation of an ultra-thin Al epitaxial layer on GaAs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"H. Munekata, N. Nishizawa","submitted_at":"2013-06-25T05:23:41Z","abstract_excerpt":"We report that an ultra-thin, post-oxidized aluminum epilayer grown on the AlGaAs surface works as a high-quality tunnel barrier for spin injection from a ferromagnetic metal to a semiconductor. One of the key points of the present oxidation method is the formation of the crystalline AlOx template layer without oxidizing the AlGaAs region near the Al/AlGaAs interface. The oxidized Al layer is not amorphous but show well-defined single crystalline feature reminiscent of the spinel gamma-AlOx phase. A spin-LED consisting of an Fe layer, a crystalline AlOx barrier layer, and an AlGaAs-InGaAs doub"},"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":"1306.5847","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2013-06-25T05:23:41Z","cross_cats_sorted":[],"title_canon_sha256":"99b1e441d2c0dfcce11efccaa9025807a8fd9c7680d1e6cecb7627f2bafd47bb","abstract_canon_sha256":"0c394992af783ada55e491626e133af478761d9bd425e31a69c53457e5fba5e7"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:19:58.376575Z","signature_b64":"QcOr+M7Wum1cWrwYvEobi7p/GAALiEU+ru4b5I1wkV3BE9fLLyIKFNQI5HDzXU+nzmEDwbgwrgmIvq/caJgVAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3f4304034f75e07dc8456396688c904fe4826f1b226ce203f02b4226bc18c260","last_reissued_at":"2026-05-18T03:19:58.375910Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:19:58.375910Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Efficient spin injection through a crystalline AlOx tunnel barrier prepared by the oxidation of an ultra-thin Al epitaxial layer on GaAs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"H. Munekata, N. Nishizawa","submitted_at":"2013-06-25T05:23:41Z","abstract_excerpt":"We report that an ultra-thin, post-oxidized aluminum epilayer grown on the AlGaAs surface works as a high-quality tunnel barrier for spin injection from a ferromagnetic metal to a semiconductor. One of the key points of the present oxidation method is the formation of the crystalline AlOx template layer without oxidizing the AlGaAs region near the Al/AlGaAs interface. The oxidized Al layer is not amorphous but show well-defined single crystalline feature reminiscent of the spinel gamma-AlOx phase. A spin-LED consisting of an Fe layer, a crystalline AlOx barrier layer, and an AlGaAs-InGaAs doub"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.5847","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":"1306.5847","created_at":"2026-05-18T03:19:58.375992+00:00"},{"alias_kind":"arxiv_version","alias_value":"1306.5847v1","created_at":"2026-05-18T03:19:58.375992+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.5847","created_at":"2026-05-18T03:19:58.375992+00:00"},{"alias_kind":"pith_short_12","alias_value":"H5BQIA2POXQH","created_at":"2026-05-18T12:27:46.883200+00:00"},{"alias_kind":"pith_short_16","alias_value":"H5BQIA2POXQH3SCF","created_at":"2026-05-18T12:27:46.883200+00:00"},{"alias_kind":"pith_short_8","alias_value":"H5BQIA2P","created_at":"2026-05-18T12:27:46.883200+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/H5BQIA2POXQH3SCFMOLGRDEQJ7","json":"https://pith.science/pith/H5BQIA2POXQH3SCFMOLGRDEQJ7.json","graph_json":"https://pith.science/api/pith-number/H5BQIA2POXQH3SCFMOLGRDEQJ7/graph.json","events_json":"https://pith.science/api/pith-number/H5BQIA2POXQH3SCFMOLGRDEQJ7/events.json","paper":"https://pith.science/paper/H5BQIA2P"},"agent_actions":{"view_html":"https://pith.science/pith/H5BQIA2POXQH3SCFMOLGRDEQJ7","download_json":"https://pith.science/pith/H5BQIA2POXQH3SCFMOLGRDEQJ7.json","view_paper":"https://pith.science/paper/H5BQIA2P","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1306.5847&json=true","fetch_graph":"https://pith.science/api/pith-number/H5BQIA2POXQH3SCFMOLGRDEQJ7/graph.json","fetch_events":"https://pith.science/api/pith-number/H5BQIA2POXQH3SCFMOLGRDEQJ7/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/H5BQIA2POXQH3SCFMOLGRDEQJ7/action/timestamp_anchor","attest_storage":"https://pith.science/pith/H5BQIA2POXQH3SCFMOLGRDEQJ7/action/storage_attestation","attest_author":"https://pith.science/pith/H5BQIA2POXQH3SCFMOLGRDEQJ7/action/author_attestation","sign_citation":"https://pith.science/pith/H5BQIA2POXQH3SCFMOLGRDEQJ7/action/citation_signature","submit_replication":"https://pith.science/pith/H5BQIA2POXQH3SCFMOLGRDEQJ7/action/replication_record"}},"created_at":"2026-05-18T03:19:58.375992+00:00","updated_at":"2026-05-18T03:19:58.375992+00:00"}