{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:PK3GSMRW4FC54CN3A52GELNIT3","short_pith_number":"pith:PK3GSMRW","canonical_record":{"source":{"id":"2107.07780","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-07-16T09:12:07Z","cross_cats_sorted":[],"title_canon_sha256":"c259e96a278c2e6ae65f4bf55076f6c53190744f7fad91305924f9dce8fe17e7","abstract_canon_sha256":"d0282be6595c33689474d4065abb3dc400a92a442e7e7384517d1d9fad693eec"},"schema_version":"1.0"},"canonical_sha256":"7ab6693236e145de09bb0774622da89ee3ce74f3ee784307ae9a504bc310a95e","source":{"kind":"arxiv","id":"2107.07780","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.07780","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"arxiv_version","alias_value":"2107.07780v1","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.07780","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"pith_short_12","alias_value":"PK3GSMRW4FC5","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"pith_short_16","alias_value":"PK3GSMRW4FC54CN3","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"pith_short_8","alias_value":"PK3GSMRW","created_at":"2026-07-05T03:04:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:PK3GSMRW4FC54CN3A52GELNIT3","target":"record","payload":{"canonical_record":{"source":{"id":"2107.07780","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-07-16T09:12:07Z","cross_cats_sorted":[],"title_canon_sha256":"c259e96a278c2e6ae65f4bf55076f6c53190744f7fad91305924f9dce8fe17e7","abstract_canon_sha256":"d0282be6595c33689474d4065abb3dc400a92a442e7e7384517d1d9fad693eec"},"schema_version":"1.0"},"canonical_sha256":"7ab6693236e145de09bb0774622da89ee3ce74f3ee784307ae9a504bc310a95e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:04:56.052574Z","signature_b64":"iJ0PAOr/XdiOfGJWdtyDXiTS90oSqFWuS0sac/wrIxoNSeS2j1Iw96lwNSSJSZnXDpH3UrxmlRpUHaiV5VJnAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7ab6693236e145de09bb0774622da89ee3ce74f3ee784307ae9a504bc310a95e","last_reissued_at":"2026-07-05T03:04:56.052211Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:04:56.052211Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2107.07780","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":"2026-07-05T03:04:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DtdHPeQ5lJLnJu4t9N4/npK/1UzyfgkwV8TScS7EUOLF81KRp0J2gz8LqmASS4RMQ3aGQ+HsGcD/tk5wnLRxBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T12:11:22.316903Z"},"content_sha256":"63c46d6e0bc2fd54372d12759b088115be3fe5c36dbc6557f9f84c1e5281f65f","schema_version":"1.0","event_id":"sha256:63c46d6e0bc2fd54372d12759b088115be3fe5c36dbc6557f9f84c1e5281f65f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:PK3GSMRW4FC54CN3A52GELNIT3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Large Unidirectional Magnetoresistance in Metallic Heterostructures in the Spin Transfer Torque Regime","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Chao-Chung Huang, Cheng-Wei Peng, Chi-Feng Pai, Chih-Lin Cheng, Tian-Yue Chen, Ting-Yu Chang, Yan-Ting Liu, Yu-Hao Huang","submitted_at":"2021-07-16T09:12:07Z","abstract_excerpt":"A large unidirectional magnetoresistance (UMR) ratio of UMR/$R_{xx}\\sim$ $0.36\\%$ is found in W/CoFeB metallic bilayer heterostructures at room temperature. Three different regimes in terms of the current dependence of UMR ratio are identified: A spin-dependent-scattering mechanism regime at small current densities $J \\sim$ $10$$^{9}$A/m$^{2}$ (UMR ratio $\\propto$ $J$), a spin-magnon-interaction mechanism regime at intermediate $J \\sim$ $10$$^{10}$A/m$^{2}$ (UMR ratio $\\propto$ $J$$^{3}$), and a spin-transfer torque (STT) regime at $J \\sim$ $10$$^{11}$A/m$^{2}$ (UMR ratio independent of $J$). "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.07780","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/2107.07780/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":"2026-07-05T03:04:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aMKfranEGu+iH9KibBfW1QGN5HdO3J3RHWgQS2mske6ouWzPWlfUoHkWEdBvWeA+/rRtO1PjdRdRugZEvsSyAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T12:11:22.317495Z"},"content_sha256":"ceae7a28967bc1cbd6c36592568f640927805b664fc0eb5972e8f2591c2d2683","schema_version":"1.0","event_id":"sha256:ceae7a28967bc1cbd6c36592568f640927805b664fc0eb5972e8f2591c2d2683"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PK3GSMRW4FC54CN3A52GELNIT3/bundle.json","state_url":"https://pith.science/pith/PK3GSMRW4FC54CN3A52GELNIT3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PK3GSMRW4FC54CN3A52GELNIT3/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":"2026-08-16T12:11:22Z","links":{"resolver":"https://pith.science/pith/PK3GSMRW4FC54CN3A52GELNIT3","bundle":"https://pith.science/pith/PK3GSMRW4FC54CN3A52GELNIT3/bundle.json","state":"https://pith.science/pith/PK3GSMRW4FC54CN3A52GELNIT3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PK3GSMRW4FC54CN3A52GELNIT3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:PK3GSMRW4FC54CN3A52GELNIT3","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":"d0282be6595c33689474d4065abb3dc400a92a442e7e7384517d1d9fad693eec","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-07-16T09:12:07Z","title_canon_sha256":"c259e96a278c2e6ae65f4bf55076f6c53190744f7fad91305924f9dce8fe17e7"},"schema_version":"1.0","source":{"id":"2107.07780","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.07780","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"arxiv_version","alias_value":"2107.07780v1","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.07780","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"pith_short_12","alias_value":"PK3GSMRW4FC5","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"pith_short_16","alias_value":"PK3GSMRW4FC54CN3","created_at":"2026-07-05T03:04:56Z"},{"alias_kind":"pith_short_8","alias_value":"PK3GSMRW","created_at":"2026-07-05T03:04:56Z"}],"graph_snapshots":[{"event_id":"sha256:ceae7a28967bc1cbd6c36592568f640927805b664fc0eb5972e8f2591c2d2683","target":"graph","created_at":"2026-07-05T03:04:56Z","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/2107.07780/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A large unidirectional magnetoresistance (UMR) ratio of UMR/$R_{xx}\\sim$ $0.36\\%$ is found in W/CoFeB metallic bilayer heterostructures at room temperature. Three different regimes in terms of the current dependence of UMR ratio are identified: A spin-dependent-scattering mechanism regime at small current densities $J \\sim$ $10$$^{9}$A/m$^{2}$ (UMR ratio $\\propto$ $J$), a spin-magnon-interaction mechanism regime at intermediate $J \\sim$ $10$$^{10}$A/m$^{2}$ (UMR ratio $\\propto$ $J$$^{3}$), and a spin-transfer torque (STT) regime at $J \\sim$ $10$$^{11}$A/m$^{2}$ (UMR ratio independent of $J$). ","authors_text":"Chao-Chung Huang, Cheng-Wei Peng, Chi-Feng Pai, Chih-Lin Cheng, Tian-Yue Chen, Ting-Yu Chang, Yan-Ting Liu, Yu-Hao Huang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-07-16T09:12:07Z","title":"Large Unidirectional Magnetoresistance in Metallic Heterostructures in the Spin Transfer Torque Regime"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.07780","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":"sha256:63c46d6e0bc2fd54372d12759b088115be3fe5c36dbc6557f9f84c1e5281f65f","target":"record","created_at":"2026-07-05T03:04:56Z","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":"d0282be6595c33689474d4065abb3dc400a92a442e7e7384517d1d9fad693eec","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-07-16T09:12:07Z","title_canon_sha256":"c259e96a278c2e6ae65f4bf55076f6c53190744f7fad91305924f9dce8fe17e7"},"schema_version":"1.0","source":{"id":"2107.07780","kind":"arxiv","version":1}},"canonical_sha256":"7ab6693236e145de09bb0774622da89ee3ce74f3ee784307ae9a504bc310a95e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7ab6693236e145de09bb0774622da89ee3ce74f3ee784307ae9a504bc310a95e","first_computed_at":"2026-07-05T03:04:56.052211Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:04:56.052211Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iJ0PAOr/XdiOfGJWdtyDXiTS90oSqFWuS0sac/wrIxoNSeS2j1Iw96lwNSSJSZnXDpH3UrxmlRpUHaiV5VJnAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:04:56.052574Z","signed_message":"canonical_sha256_bytes"},"source_id":"2107.07780","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:63c46d6e0bc2fd54372d12759b088115be3fe5c36dbc6557f9f84c1e5281f65f","sha256:ceae7a28967bc1cbd6c36592568f640927805b664fc0eb5972e8f2591c2d2683"],"state_sha256":"1422e6702a3f4ed6ad9ae68c28f6aa865f5e73e3fabb106e7d9802e9dd8c306b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"usMZJ/AlQU18rJPvvEk1GFyd0DNM8XKJmIJgEwPZ3r5YJUCIh7iCGF7hi025gQsNCst96gUs8fnyztGhtH2dBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T12:11:22.321740Z","bundle_sha256":"5128ccae2c84781ba159284ee9b10f30a6907b785b5a8bc5657e11ca9c7364ee"}}