{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:3DGQDRAEXKI27DQUTAXPESFBAB","short_pith_number":"pith:3DGQDRAE","canonical_record":{"source":{"id":"cond-mat/0605202","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2006-05-08T16:56:44Z","cross_cats_sorted":[],"title_canon_sha256":"bec07f884801159f749b79eaf0d7c1ece6177c749d44fb05990bb6587a80913f","abstract_canon_sha256":"192ab5193ab450eca9d61eaf23125f26ce356bb96dbbc4891f0d4a176bec99c0"},"schema_version":"1.0"},"canonical_sha256":"d8cd01c404ba91af8e14982ef248a10043f4f4ab9e3bb09305da7db5e336c815","source":{"kind":"arxiv","id":"cond-mat/0605202","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0605202","created_at":"2026-07-04T14:54:22Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0605202v1","created_at":"2026-07-04T14:54:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0605202","created_at":"2026-07-04T14:54:22Z"},{"alias_kind":"pith_short_12","alias_value":"3DGQDRAEXKI2","created_at":"2026-07-04T14:54:22Z"},{"alias_kind":"pith_short_16","alias_value":"3DGQDRAEXKI27DQU","created_at":"2026-07-04T14:54:22Z"},{"alias_kind":"pith_short_8","alias_value":"3DGQDRAE","created_at":"2026-07-04T14:54:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:3DGQDRAEXKI27DQUTAXPESFBAB","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0605202","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2006-05-08T16:56:44Z","cross_cats_sorted":[],"title_canon_sha256":"bec07f884801159f749b79eaf0d7c1ece6177c749d44fb05990bb6587a80913f","abstract_canon_sha256":"192ab5193ab450eca9d61eaf23125f26ce356bb96dbbc4891f0d4a176bec99c0"},"schema_version":"1.0"},"canonical_sha256":"d8cd01c404ba91af8e14982ef248a10043f4f4ab9e3bb09305da7db5e336c815","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:54:22.888867Z","signature_b64":"P3MazQoXVf2fSFWGGC550m4euH49mHL9KrDzqCzQ816HlRMdsMzR3zMMXFELlZOVJnCxNKgyj+uu+HCncjcNDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d8cd01c404ba91af8e14982ef248a10043f4f4ab9e3bb09305da7db5e336c815","last_reissued_at":"2026-07-04T14:54:22.888483Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:54:22.888483Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0605202","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T14:54:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FHB/iwAz/z+z1t35T8sAql9yK/YbB4W1zyaLnZUosJI3Jn4jN4zQaaMN79oFFEmEhc0ENFdYGzZ6LAqVcxuGDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T03:38:54.359969Z"},"content_sha256":"dd0fcda6b7aa1483c5ac44fc83668a59aba54b0da406e701b2243ab0d1fe38b6","schema_version":"1.0","event_id":"sha256:dd0fcda6b7aa1483c5ac44fc83668a59aba54b0da406e701b2243ab0d1fe38b6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:3DGQDRAEXKI27DQUTAXPESFBAB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Determination of Interface Atomic Structure and Its Impact on Spin Transport Using Z-Contrast Microscopy and Density-Functional Theory","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Aubrey T. Hanbicki, Berend T. Jonker, Connie H. Li, George Kioseoglou, Igor Zutic, Rhonda M. Stroud, Steven C. Erwin, Thomas J. Zega","submitted_at":"2006-05-08T16:56:44Z","abstract_excerpt":"We combine Z-contrast scanning transmission electron microscopy with density-functional-theory calculations to determine the atomic structure of the Fe/AlGaAs interface in spin-polarized light-emitting diodes. A 44% increase in spin-injection efficiency occurs after a low-temperature anneal, which produces an ordered, coherent interface consisting of a single atomic plane of alternating Fe and As atoms. First-principles transport calculations indicate that the increase in spin-injection efficiency is due to the abruptness and coherency of the annealed interface."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0605202","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/cond-mat/0605202/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T14:54:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zCh6bddw5CuLp9NXuDm+50WmJ22ebrV0NXcGV6fKRmjjIiqC7mienWCZtpZ0DMo4T0O0jxWKMZRmwJ/32J5mCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T03:38:54.360346Z"},"content_sha256":"c6440191bcb79183f7116bb66d262581707cf7969e2d43ae218d021b97d23fa4","schema_version":"1.0","event_id":"sha256:c6440191bcb79183f7116bb66d262581707cf7969e2d43ae218d021b97d23fa4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3DGQDRAEXKI27DQUTAXPESFBAB/bundle.json","state_url":"https://pith.science/pith/3DGQDRAEXKI27DQUTAXPESFBAB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3DGQDRAEXKI27DQUTAXPESFBAB/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-07T03:38:54Z","links":{"resolver":"https://pith.science/pith/3DGQDRAEXKI27DQUTAXPESFBAB","bundle":"https://pith.science/pith/3DGQDRAEXKI27DQUTAXPESFBAB/bundle.json","state":"https://pith.science/pith/3DGQDRAEXKI27DQUTAXPESFBAB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3DGQDRAEXKI27DQUTAXPESFBAB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:3DGQDRAEXKI27DQUTAXPESFBAB","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":"192ab5193ab450eca9d61eaf23125f26ce356bb96dbbc4891f0d4a176bec99c0","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2006-05-08T16:56:44Z","title_canon_sha256":"bec07f884801159f749b79eaf0d7c1ece6177c749d44fb05990bb6587a80913f"},"schema_version":"1.0","source":{"id":"cond-mat/0605202","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0605202","created_at":"2026-07-04T14:54:22Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0605202v1","created_at":"2026-07-04T14:54:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0605202","created_at":"2026-07-04T14:54:22Z"},{"alias_kind":"pith_short_12","alias_value":"3DGQDRAEXKI2","created_at":"2026-07-04T14:54:22Z"},{"alias_kind":"pith_short_16","alias_value":"3DGQDRAEXKI27DQU","created_at":"2026-07-04T14:54:22Z"},{"alias_kind":"pith_short_8","alias_value":"3DGQDRAE","created_at":"2026-07-04T14:54:22Z"}],"graph_snapshots":[{"event_id":"sha256:c6440191bcb79183f7116bb66d262581707cf7969e2d43ae218d021b97d23fa4","target":"graph","created_at":"2026-07-04T14:54:22Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/cond-mat/0605202/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We combine Z-contrast scanning transmission electron microscopy with density-functional-theory calculations to determine the atomic structure of the Fe/AlGaAs interface in spin-polarized light-emitting diodes. A 44% increase in spin-injection efficiency occurs after a low-temperature anneal, which produces an ordered, coherent interface consisting of a single atomic plane of alternating Fe and As atoms. First-principles transport calculations indicate that the increase in spin-injection efficiency is due to the abruptness and coherency of the annealed interface.","authors_text":"Aubrey T. Hanbicki, Berend T. Jonker, Connie H. Li, George Kioseoglou, Igor Zutic, Rhonda M. Stroud, Steven C. Erwin, Thomas J. Zega","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2006-05-08T16:56:44Z","title":"Determination of Interface Atomic Structure and Its Impact on Spin Transport Using Z-Contrast Microscopy and Density-Functional Theory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0605202","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:dd0fcda6b7aa1483c5ac44fc83668a59aba54b0da406e701b2243ab0d1fe38b6","target":"record","created_at":"2026-07-04T14:54:22Z","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":"192ab5193ab450eca9d61eaf23125f26ce356bb96dbbc4891f0d4a176bec99c0","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2006-05-08T16:56:44Z","title_canon_sha256":"bec07f884801159f749b79eaf0d7c1ece6177c749d44fb05990bb6587a80913f"},"schema_version":"1.0","source":{"id":"cond-mat/0605202","kind":"arxiv","version":1}},"canonical_sha256":"d8cd01c404ba91af8e14982ef248a10043f4f4ab9e3bb09305da7db5e336c815","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d8cd01c404ba91af8e14982ef248a10043f4f4ab9e3bb09305da7db5e336c815","first_computed_at":"2026-07-04T14:54:22.888483Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:54:22.888483Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P3MazQoXVf2fSFWGGC550m4euH49mHL9KrDzqCzQ816HlRMdsMzR3zMMXFELlZOVJnCxNKgyj+uu+HCncjcNDA==","signature_status":"signed_v1","signed_at":"2026-07-04T14:54:22.888867Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0605202","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dd0fcda6b7aa1483c5ac44fc83668a59aba54b0da406e701b2243ab0d1fe38b6","sha256:c6440191bcb79183f7116bb66d262581707cf7969e2d43ae218d021b97d23fa4"],"state_sha256":"7b7a6e19f4b6fca44d6b1a5636cb3ec5ad8894bbb3f57135d72b7ca7b71140e4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J0Da8eDKlEXUvjrmBUFB01chR2G8RcXSQvI07Z6/tj5uLWh51JUebIvtivFjF7O9LGVDQnpr3LQ8xfyUmVgTBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T03:38:54.362650Z","bundle_sha256":"976eeffe0477d91f12693d60225fa604d8143784d25d0443aa0100085ebf466f"}}