{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:ZOAMZO3XNGKDSGLUTGZ375XG44","short_pith_number":"pith:ZOAMZO3X","canonical_record":{"source":{"id":"1404.3523","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-04-14T10:13:40Z","cross_cats_sorted":["cond-mat.mes-hall","physics.comp-ph"],"title_canon_sha256":"e44fe555187f95fa0ca9c7e8e6a504e0ec4966a247ea41441da992d97777f9a4","abstract_canon_sha256":"6f287e3ef1a6b5f9dbd427845c7566cf9048db16728652b7c17db49f1a56df5d"},"schema_version":"1.0"},"canonical_sha256":"cb80ccbb77699439197499b3bff6e6e72ce070a0145ae7f845179cf9d4332d74","source":{"kind":"arxiv","id":"1404.3523","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.3523","created_at":"2026-05-18T01:22:12Z"},{"alias_kind":"arxiv_version","alias_value":"1404.3523v1","created_at":"2026-05-18T01:22:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.3523","created_at":"2026-05-18T01:22:12Z"},{"alias_kind":"pith_short_12","alias_value":"ZOAMZO3XNGKD","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZOAMZO3XNGKDSGLU","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZOAMZO3X","created_at":"2026-05-18T12:28:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:ZOAMZO3XNGKDSGLUTGZ375XG44","target":"record","payload":{"canonical_record":{"source":{"id":"1404.3523","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-04-14T10:13:40Z","cross_cats_sorted":["cond-mat.mes-hall","physics.comp-ph"],"title_canon_sha256":"e44fe555187f95fa0ca9c7e8e6a504e0ec4966a247ea41441da992d97777f9a4","abstract_canon_sha256":"6f287e3ef1a6b5f9dbd427845c7566cf9048db16728652b7c17db49f1a56df5d"},"schema_version":"1.0"},"canonical_sha256":"cb80ccbb77699439197499b3bff6e6e72ce070a0145ae7f845179cf9d4332d74","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:22:12.887028Z","signature_b64":"3nRUTU/j8O9yA7g97AUFhMiHyeRZ1VdKErFUVTTTPHyzIXllvDpNwZQ0m4iL9tnuM7sp5rOpWX5HcdO237XyCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cb80ccbb77699439197499b3bff6e6e72ce070a0145ae7f845179cf9d4332d74","last_reissued_at":"2026-05-18T01:22:12.886299Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:22:12.886299Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1404.3523","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":"2026-05-18T01:22:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IxC2/qO93NQBywostRLjNQrkjDUDvs5vnFDftaZB0RUXnt2QI9QIDAslMX96M3xv5giBQFpKJKQxxtwPGVUDDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T22:46:33.253845Z"},"content_sha256":"a60eaa0525f53bf327984f9f046eaea0c1727e668c50439232130768d5816d88","schema_version":"1.0","event_id":"sha256:a60eaa0525f53bf327984f9f046eaea0c1727e668c50439232130768d5816d88"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:ZOAMZO3XNGKDSGLUTGZ375XG44","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Impurity induced enhancement of perpendicular magnetic anisotropy in Fe/MgO tunnel junctions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","physics.comp-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Hallal, B. Dieny, M. Chshiev","submitted_at":"2014-04-14T10:13:40Z","abstract_excerpt":"Using first-principles calculations, we investigated the impact of chromium (Cr) and vanadium (V) impurities on the magnetic anisotropy and spin polarization in Fe/MgO magnetic tunnel junctions. It is demonstrated using layer resolved anisotropy calculation technique, that while the impurity near the interface has a drastic effect in decreasing the perpendicular magnetic anisotropy (PMA), its position within the bulk allows maintaining high surface PMA. Moreover, the effective magnetic anisotropy has a strong tendency to go from in-plane to out-of-plane character as a function of Cr and V conc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.3523","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:22:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"//VyDeZ2FSCiAN/SW9CrDZt4dDK2Pn/pFueCt0LFAIacQzBVI97CoaiJ15ftbT1YznVMEltIC6qUt+Nida0QBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T22:46:33.254199Z"},"content_sha256":"f69e78ba6f74a37efdf2e1d846c026cc531ac4c18a6298600c63ca07eacce2a3","schema_version":"1.0","event_id":"sha256:f69e78ba6f74a37efdf2e1d846c026cc531ac4c18a6298600c63ca07eacce2a3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZOAMZO3XNGKDSGLUTGZ375XG44/bundle.json","state_url":"https://pith.science/pith/ZOAMZO3XNGKDSGLUTGZ375XG44/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZOAMZO3XNGKDSGLUTGZ375XG44/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":"2026-05-19T22:46:33Z","links":{"resolver":"https://pith.science/pith/ZOAMZO3XNGKDSGLUTGZ375XG44","bundle":"https://pith.science/pith/ZOAMZO3XNGKDSGLUTGZ375XG44/bundle.json","state":"https://pith.science/pith/ZOAMZO3XNGKDSGLUTGZ375XG44/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZOAMZO3XNGKDSGLUTGZ375XG44/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ZOAMZO3XNGKDSGLUTGZ375XG44","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":"6f287e3ef1a6b5f9dbd427845c7566cf9048db16728652b7c17db49f1a56df5d","cross_cats_sorted":["cond-mat.mes-hall","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-04-14T10:13:40Z","title_canon_sha256":"e44fe555187f95fa0ca9c7e8e6a504e0ec4966a247ea41441da992d97777f9a4"},"schema_version":"1.0","source":{"id":"1404.3523","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1404.3523","created_at":"2026-05-18T01:22:12Z"},{"alias_kind":"arxiv_version","alias_value":"1404.3523v1","created_at":"2026-05-18T01:22:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.3523","created_at":"2026-05-18T01:22:12Z"},{"alias_kind":"pith_short_12","alias_value":"ZOAMZO3XNGKD","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZOAMZO3XNGKDSGLU","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZOAMZO3X","created_at":"2026-05-18T12:28:59Z"}],"graph_snapshots":[{"event_id":"sha256:f69e78ba6f74a37efdf2e1d846c026cc531ac4c18a6298600c63ca07eacce2a3","target":"graph","created_at":"2026-05-18T01:22:12Z","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":"Using first-principles calculations, we investigated the impact of chromium (Cr) and vanadium (V) impurities on the magnetic anisotropy and spin polarization in Fe/MgO magnetic tunnel junctions. It is demonstrated using layer resolved anisotropy calculation technique, that while the impurity near the interface has a drastic effect in decreasing the perpendicular magnetic anisotropy (PMA), its position within the bulk allows maintaining high surface PMA. Moreover, the effective magnetic anisotropy has a strong tendency to go from in-plane to out-of-plane character as a function of Cr and V conc","authors_text":"A. Hallal, B. Dieny, M. Chshiev","cross_cats":["cond-mat.mes-hall","physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-04-14T10:13:40Z","title":"Impurity induced enhancement of perpendicular magnetic anisotropy in Fe/MgO tunnel junctions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.3523","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:a60eaa0525f53bf327984f9f046eaea0c1727e668c50439232130768d5816d88","target":"record","created_at":"2026-05-18T01:22:12Z","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":"6f287e3ef1a6b5f9dbd427845c7566cf9048db16728652b7c17db49f1a56df5d","cross_cats_sorted":["cond-mat.mes-hall","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-04-14T10:13:40Z","title_canon_sha256":"e44fe555187f95fa0ca9c7e8e6a504e0ec4966a247ea41441da992d97777f9a4"},"schema_version":"1.0","source":{"id":"1404.3523","kind":"arxiv","version":1}},"canonical_sha256":"cb80ccbb77699439197499b3bff6e6e72ce070a0145ae7f845179cf9d4332d74","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cb80ccbb77699439197499b3bff6e6e72ce070a0145ae7f845179cf9d4332d74","first_computed_at":"2026-05-18T01:22:12.886299Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:22:12.886299Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3nRUTU/j8O9yA7g97AUFhMiHyeRZ1VdKErFUVTTTPHyzIXllvDpNwZQ0m4iL9tnuM7sp5rOpWX5HcdO237XyCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:22:12.887028Z","signed_message":"canonical_sha256_bytes"},"source_id":"1404.3523","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a60eaa0525f53bf327984f9f046eaea0c1727e668c50439232130768d5816d88","sha256:f69e78ba6f74a37efdf2e1d846c026cc531ac4c18a6298600c63ca07eacce2a3"],"state_sha256":"8b61337e010080f1c9b1f58de558f9eb64c654fcc662fd61b7293d3e39dcaae9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q99uSgXI8nwiEeLLS/4zbUy6xTh+6m8PmcZR8FGHOsjus4TAT0SEJkQ7+horc5Wna6uJyjxBqTmmSiIhG8RGCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T22:46:33.256241Z","bundle_sha256":"c59018e3c23971624055ec54380b99bfc22608b61a1af8a846315a3de107875b"}}