{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:64ZIKKFFDRX32Z6HKRC7OBV4TV","short_pith_number":"pith:64ZIKKFF","canonical_record":{"source":{"id":"1803.09083","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-03-24T09:21:24Z","cross_cats_sorted":[],"title_canon_sha256":"b82f0e1a03c941d25337c73724637abb359d9362e02644ad7e4a0017737626c1","abstract_canon_sha256":"bca98d6996ecc457860f89c2288d3414c71f636c131ef43951e94e8ae7f26228"},"schema_version":"1.0"},"canonical_sha256":"f7328528a51c6fbd67c75445f706bc9d6f9b056c47aad3085f342233374c33d9","source":{"kind":"arxiv","id":"1803.09083","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.09083","created_at":"2026-05-18T00:20:12Z"},{"alias_kind":"arxiv_version","alias_value":"1803.09083v1","created_at":"2026-05-18T00:20:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.09083","created_at":"2026-05-18T00:20:12Z"},{"alias_kind":"pith_short_12","alias_value":"64ZIKKFFDRX3","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"64ZIKKFFDRX32Z6H","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"64ZIKKFF","created_at":"2026-05-18T12:32:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:64ZIKKFFDRX32Z6HKRC7OBV4TV","target":"record","payload":{"canonical_record":{"source":{"id":"1803.09083","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-03-24T09:21:24Z","cross_cats_sorted":[],"title_canon_sha256":"b82f0e1a03c941d25337c73724637abb359d9362e02644ad7e4a0017737626c1","abstract_canon_sha256":"bca98d6996ecc457860f89c2288d3414c71f636c131ef43951e94e8ae7f26228"},"schema_version":"1.0"},"canonical_sha256":"f7328528a51c6fbd67c75445f706bc9d6f9b056c47aad3085f342233374c33d9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:20:12.653683Z","signature_b64":"a2NkkmWBjDXHefJXaAMljp9kDpz0wjAycA26AEtZXwnnwUl6NpbUQ82ASPqHdLmj97/oCP5VU5xSJwJjY7jbCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f7328528a51c6fbd67c75445f706bc9d6f9b056c47aad3085f342233374c33d9","last_reissued_at":"2026-05-18T00:20:12.653248Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:20:12.653248Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.09083","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":"2026-05-18T00:20:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QiOzwRGFpmpIemy7W6tklE3Z86hXgkZsd/gqUfqhF1UJ+HdwUg9wCqvQIijhg7MTK61eUqN36XiSEtHG4JwsBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T22:02:23.941386Z"},"content_sha256":"1ef60c8958d21f0ee3770a0ac6b004d595b577834e9cfcaa6edba16cebf2f0f4","schema_version":"1.0","event_id":"sha256:1ef60c8958d21f0ee3770a0ac6b004d595b577834e9cfcaa6edba16cebf2f0f4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:64ZIKKFFDRX32Z6HKRC7OBV4TV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spin polarisation of ultrashort spin current pulses injected in semiconductors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Marco Battiato","submitted_at":"2018-03-24T09:21:24Z","abstract_excerpt":"Ultrashort spin current pulses have a great potential of becoming the carriers of information in future ultrafast spintronics. They present the outstanding property of an extremely compressed time profile, which can allow for the building up of spintronics operating at the unprecedented THz frequencies. The ultrashort spin pulses, however still lack other desirable features. For instance the spatial profile resembles more that of a spill rather than that of a spatially compressed pulse. Moreover the ultrashort spin current pulses can travel only across small distances in metals. The injection "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.09083","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":"2026-05-18T00:20:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9dcC+7oXMDIT7ANrfez2+7e91+ASoWouUk80mXdswSwCU5laTxdEHopD3qkuH9OH+uiU8CWUyqbDmi0aTl+RDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T22:02:23.942037Z"},"content_sha256":"2ef86053f4778d43c6cc3fd4963d3b792572fc135a52446a8d2fc3814d75970f","schema_version":"1.0","event_id":"sha256:2ef86053f4778d43c6cc3fd4963d3b792572fc135a52446a8d2fc3814d75970f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/64ZIKKFFDRX32Z6HKRC7OBV4TV/bundle.json","state_url":"https://pith.science/pith/64ZIKKFFDRX32Z6HKRC7OBV4TV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/64ZIKKFFDRX32Z6HKRC7OBV4TV/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":"2026-05-24T22:02:23Z","links":{"resolver":"https://pith.science/pith/64ZIKKFFDRX32Z6HKRC7OBV4TV","bundle":"https://pith.science/pith/64ZIKKFFDRX32Z6HKRC7OBV4TV/bundle.json","state":"https://pith.science/pith/64ZIKKFFDRX32Z6HKRC7OBV4TV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/64ZIKKFFDRX32Z6HKRC7OBV4TV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:64ZIKKFFDRX32Z6HKRC7OBV4TV","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":"bca98d6996ecc457860f89c2288d3414c71f636c131ef43951e94e8ae7f26228","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-03-24T09:21:24Z","title_canon_sha256":"b82f0e1a03c941d25337c73724637abb359d9362e02644ad7e4a0017737626c1"},"schema_version":"1.0","source":{"id":"1803.09083","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.09083","created_at":"2026-05-18T00:20:12Z"},{"alias_kind":"arxiv_version","alias_value":"1803.09083v1","created_at":"2026-05-18T00:20:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.09083","created_at":"2026-05-18T00:20:12Z"},{"alias_kind":"pith_short_12","alias_value":"64ZIKKFFDRX3","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"64ZIKKFFDRX32Z6H","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"64ZIKKFF","created_at":"2026-05-18T12:32:08Z"}],"graph_snapshots":[{"event_id":"sha256:2ef86053f4778d43c6cc3fd4963d3b792572fc135a52446a8d2fc3814d75970f","target":"graph","created_at":"2026-05-18T00:20:12Z","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":"Ultrashort spin current pulses have a great potential of becoming the carriers of information in future ultrafast spintronics. They present the outstanding property of an extremely compressed time profile, which can allow for the building up of spintronics operating at the unprecedented THz frequencies. The ultrashort spin pulses, however still lack other desirable features. For instance the spatial profile resembles more that of a spill rather than that of a spatially compressed pulse. Moreover the ultrashort spin current pulses can travel only across small distances in metals. The injection ","authors_text":"Marco Battiato","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-03-24T09:21:24Z","title":"Spin polarisation of ultrashort spin current pulses injected in semiconductors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.09083","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":"sha256:1ef60c8958d21f0ee3770a0ac6b004d595b577834e9cfcaa6edba16cebf2f0f4","target":"record","created_at":"2026-05-18T00:20:12Z","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":"bca98d6996ecc457860f89c2288d3414c71f636c131ef43951e94e8ae7f26228","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-03-24T09:21:24Z","title_canon_sha256":"b82f0e1a03c941d25337c73724637abb359d9362e02644ad7e4a0017737626c1"},"schema_version":"1.0","source":{"id":"1803.09083","kind":"arxiv","version":1}},"canonical_sha256":"f7328528a51c6fbd67c75445f706bc9d6f9b056c47aad3085f342233374c33d9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f7328528a51c6fbd67c75445f706bc9d6f9b056c47aad3085f342233374c33d9","first_computed_at":"2026-05-18T00:20:12.653248Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:20:12.653248Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a2NkkmWBjDXHefJXaAMljp9kDpz0wjAycA26AEtZXwnnwUl6NpbUQ82ASPqHdLmj97/oCP5VU5xSJwJjY7jbCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:20:12.653683Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.09083","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1ef60c8958d21f0ee3770a0ac6b004d595b577834e9cfcaa6edba16cebf2f0f4","sha256:2ef86053f4778d43c6cc3fd4963d3b792572fc135a52446a8d2fc3814d75970f"],"state_sha256":"552769a8b2f9c0a9f4a90089006c50532096cbc60bbaa701eaf4e8dcc822702e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DavmfH6fzEikVh/IE+pqa2z2NXF67APFKFGkWvbJK+peJAdaPH/Wq5YIDe9M+0T/+3EzQw7qWvjiW0OG0qq6BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-24T22:02:23.945501Z","bundle_sha256":"3d52b7234932e5da5fcaef534f98bcac7aa7e2d69e43f18a192881287b7fd01e"}}