{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:KCLTBMQPX2QAPJKECZSGQCTI26","short_pith_number":"pith:KCLTBMQP","canonical_record":{"source":{"id":"1010.1374","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-10-07T09:04:48Z","cross_cats_sorted":[],"title_canon_sha256":"acf64ddbbf6168ddfae2b8e0d80dab6b9a63953dd686391b5d1b3559e1a3e827","abstract_canon_sha256":"08ba6cfde1ce5b7492e283ce4231d4ad37361dffab7b20aa4323318614714c0e"},"schema_version":"1.0"},"canonical_sha256":"509730b20fbea007a5441664680a68d78dd6aff677622510d426896e1ce5cde0","source":{"kind":"arxiv","id":"1010.1374","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.1374","created_at":"2026-05-18T03:30:26Z"},{"alias_kind":"arxiv_version","alias_value":"1010.1374v2","created_at":"2026-05-18T03:30:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.1374","created_at":"2026-05-18T03:30:26Z"},{"alias_kind":"pith_short_12","alias_value":"KCLTBMQPX2QA","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"KCLTBMQPX2QAPJKE","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"KCLTBMQP","created_at":"2026-05-18T12:26:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:KCLTBMQPX2QAPJKECZSGQCTI26","target":"record","payload":{"canonical_record":{"source":{"id":"1010.1374","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-10-07T09:04:48Z","cross_cats_sorted":[],"title_canon_sha256":"acf64ddbbf6168ddfae2b8e0d80dab6b9a63953dd686391b5d1b3559e1a3e827","abstract_canon_sha256":"08ba6cfde1ce5b7492e283ce4231d4ad37361dffab7b20aa4323318614714c0e"},"schema_version":"1.0"},"canonical_sha256":"509730b20fbea007a5441664680a68d78dd6aff677622510d426896e1ce5cde0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:30:26.144233Z","signature_b64":"IvWopS8R8umlxG99qHzZHJF3eddbqffoePPdHaj1AHN0MJ6JELz6jAGluPKhVgeYqPuZwKrMPgIwciD0+zHwCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"509730b20fbea007a5441664680a68d78dd6aff677622510d426896e1ce5cde0","last_reissued_at":"2026-05-18T03:30:26.143452Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:30:26.143452Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1010.1374","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:30:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ldnhyseWv9cCahCkZ9ZdwB8WG2JBWZcyO1Aflk9kpoIw/Bhrr3QZ470ItQkP1dgVvjKMgHPUG7PjRB8KFzkTDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T13:50:56.995418Z"},"content_sha256":"95e26f9af25493d224d6615dd51a80b7d01edfa46fd5115ed582ac9370d340e0","schema_version":"1.0","event_id":"sha256:95e26f9af25493d224d6615dd51a80b7d01edfa46fd5115ed582ac9370d340e0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:KCLTBMQPX2QAPJKECZSGQCTI26","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hot electron driven enhancement of spin-lattice coupling in 4f ferromagnets observed by femtosecond x-ray magnetic circular dichroism","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alexey Melnikov, Christian Stamm, Cornelius Gahl, Hermann A. D\\\"urr, Marko Wietstruk, Martin Weinelt, Muhammad Sultan, Niko Pontius, Torsten Kachel, Uwe Bovensiepen","submitted_at":"2010-10-07T09:04:48Z","abstract_excerpt":"Femtosecond x-ray magnetic circular dichroism was used to study the time-dependent magnetic moment of 4 fs electrons in the ferromagnets Gd and Tb, which are known for their different spin-lattice coupling. We observe a two-step demagnetization with an ultrafast demagnetization time of 750 fs identical for both systems and slower times which differ sizeably with 40 ps for Gd and 8 ps for Tb. We conclude that spin-lattice coupling in the electronically excited state is enhanced up to orders of magnitude compared to equilibrium."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.1374","kind":"arxiv","version":2},"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":"2026-05-18T03:30:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZWg3fDUnpVdTsqTi+6CaWQngbmYtWGjxP3E0zH1KGFXw9/i8N5SkXdWtB6+ZIupbo3XAfABJwLN2TkoX1b/mDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T13:50:56.995793Z"},"content_sha256":"77508f415db1d91f67bc42b1572beaa5409d67736f533e6ea24efc9d971a3f8c","schema_version":"1.0","event_id":"sha256:77508f415db1d91f67bc42b1572beaa5409d67736f533e6ea24efc9d971a3f8c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KCLTBMQPX2QAPJKECZSGQCTI26/bundle.json","state_url":"https://pith.science/pith/KCLTBMQPX2QAPJKECZSGQCTI26/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KCLTBMQPX2QAPJKECZSGQCTI26/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":"2026-05-27T13:50:56Z","links":{"resolver":"https://pith.science/pith/KCLTBMQPX2QAPJKECZSGQCTI26","bundle":"https://pith.science/pith/KCLTBMQPX2QAPJKECZSGQCTI26/bundle.json","state":"https://pith.science/pith/KCLTBMQPX2QAPJKECZSGQCTI26/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KCLTBMQPX2QAPJKECZSGQCTI26/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:KCLTBMQPX2QAPJKECZSGQCTI26","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":"08ba6cfde1ce5b7492e283ce4231d4ad37361dffab7b20aa4323318614714c0e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-10-07T09:04:48Z","title_canon_sha256":"acf64ddbbf6168ddfae2b8e0d80dab6b9a63953dd686391b5d1b3559e1a3e827"},"schema_version":"1.0","source":{"id":"1010.1374","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.1374","created_at":"2026-05-18T03:30:26Z"},{"alias_kind":"arxiv_version","alias_value":"1010.1374v2","created_at":"2026-05-18T03:30:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.1374","created_at":"2026-05-18T03:30:26Z"},{"alias_kind":"pith_short_12","alias_value":"KCLTBMQPX2QA","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"KCLTBMQPX2QAPJKE","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"KCLTBMQP","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:77508f415db1d91f67bc42b1572beaa5409d67736f533e6ea24efc9d971a3f8c","target":"graph","created_at":"2026-05-18T03:30:26Z","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":"Femtosecond x-ray magnetic circular dichroism was used to study the time-dependent magnetic moment of 4 fs electrons in the ferromagnets Gd and Tb, which are known for their different spin-lattice coupling. We observe a two-step demagnetization with an ultrafast demagnetization time of 750 fs identical for both systems and slower times which differ sizeably with 40 ps for Gd and 8 ps for Tb. We conclude that spin-lattice coupling in the electronically excited state is enhanced up to orders of magnitude compared to equilibrium.","authors_text":"Alexey Melnikov, Christian Stamm, Cornelius Gahl, Hermann A. D\\\"urr, Marko Wietstruk, Martin Weinelt, Muhammad Sultan, Niko Pontius, Torsten Kachel, Uwe Bovensiepen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-10-07T09:04:48Z","title":"Hot electron driven enhancement of spin-lattice coupling in 4f ferromagnets observed by femtosecond x-ray magnetic circular dichroism"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.1374","kind":"arxiv","version":2},"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":"sha256:95e26f9af25493d224d6615dd51a80b7d01edfa46fd5115ed582ac9370d340e0","target":"record","created_at":"2026-05-18T03:30:26Z","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":"08ba6cfde1ce5b7492e283ce4231d4ad37361dffab7b20aa4323318614714c0e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2010-10-07T09:04:48Z","title_canon_sha256":"acf64ddbbf6168ddfae2b8e0d80dab6b9a63953dd686391b5d1b3559e1a3e827"},"schema_version":"1.0","source":{"id":"1010.1374","kind":"arxiv","version":2}},"canonical_sha256":"509730b20fbea007a5441664680a68d78dd6aff677622510d426896e1ce5cde0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"509730b20fbea007a5441664680a68d78dd6aff677622510d426896e1ce5cde0","first_computed_at":"2026-05-18T03:30:26.143452Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:30:26.143452Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IvWopS8R8umlxG99qHzZHJF3eddbqffoePPdHaj1AHN0MJ6JELz6jAGluPKhVgeYqPuZwKrMPgIwciD0+zHwCw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:30:26.144233Z","signed_message":"canonical_sha256_bytes"},"source_id":"1010.1374","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:95e26f9af25493d224d6615dd51a80b7d01edfa46fd5115ed582ac9370d340e0","sha256:77508f415db1d91f67bc42b1572beaa5409d67736f533e6ea24efc9d971a3f8c"],"state_sha256":"f95186a85f1a7ffcd9d42ebaf9a07a18e26dac6fc98fd012a93f17d5dd92cfb8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TcMl75bKuZD+/jtjDUvPW0WlYBYtEVmUpsUJoUnL5LoMbxZRMYaquzxR7Wn4QDAV51rXSCv9BZzknYRnk6VgCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T13:50:56.999183Z","bundle_sha256":"a5aa5a77fcd736cfe6629f1f7f69cf260e9aa86a6a111fd47fe84cb6f9b3b396"}}