{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:R3I4UEQ7SYDA3GXCXZMG3VBZSW","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":"f0faf5902d8d9ed3b804dc0cdae345d39d746bbcca5d79d464f49d621542bb65","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-07-30T13:56:31Z","title_canon_sha256":"91455346aa67d09601805f13a6a88041f54bdab948f92455c443ebed2c3c9967"},"schema_version":"1.0","source":{"id":"1907.12944","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.12944","created_at":"2026-07-04T23:50:26Z"},{"alias_kind":"arxiv_version","alias_value":"1907.12944v1","created_at":"2026-07-04T23:50:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.12944","created_at":"2026-07-04T23:50:26Z"},{"alias_kind":"pith_short_12","alias_value":"R3I4UEQ7SYDA","created_at":"2026-07-04T23:50:26Z"},{"alias_kind":"pith_short_16","alias_value":"R3I4UEQ7SYDA3GXC","created_at":"2026-07-04T23:50:26Z"},{"alias_kind":"pith_short_8","alias_value":"R3I4UEQ7","created_at":"2026-07-04T23:50:26Z"}],"graph_snapshots":[{"event_id":"sha256:30c8083a42e436582751a054467d5b669da9b10a8468af6417f84ecb85dab39e","target":"graph","created_at":"2026-07-04T23:50:26Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1907.12944/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The transport of H adatoms across oxide supports plays an important role in many catalytic reactions. We investigate the dynamics of H/Fe3O4(001) between 295 and 382 K. By scanning tunneling microscopy at frame rates of up to 19.6 fps, we observe the thermally activated switching of H between two O atoms on neighboring Fe rows. This switching rate changes in proximity to a defect, explained by density functional theory as a distortion in the Fe-O lattice shortening the diffusion path. Quantitative analysis yields an apparent activation barrier of 0.94 +/- 0.07 eV on a pristine surface. The pre","authors_text":"Alexander Bourgund, Barbara A. J. Lechner, Cesare Franchini, Friedrich Esch, Gareth S. Parkinson, Matthias Meier, Ueli Heiz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-07-30T13:56:31Z","title":"Influence of Local Defects on the Dynamics of O-H Bond Breaking and Formation on a Magnetite Surface"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.12944","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":"sha256:807190d74f95db81846e169f0974cdcad33bd0a7e39d22edfa127a4e5aef5122","target":"record","created_at":"2026-07-04T23:50:26Z","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":"f0faf5902d8d9ed3b804dc0cdae345d39d746bbcca5d79d464f49d621542bb65","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-07-30T13:56:31Z","title_canon_sha256":"91455346aa67d09601805f13a6a88041f54bdab948f92455c443ebed2c3c9967"},"schema_version":"1.0","source":{"id":"1907.12944","kind":"arxiv","version":1}},"canonical_sha256":"8ed1ca121f96060d9ae2be586dd4399584c30708a7d3873afa00bffbf14e5bd0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8ed1ca121f96060d9ae2be586dd4399584c30708a7d3873afa00bffbf14e5bd0","first_computed_at":"2026-07-04T23:50:26.332400Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:50:26.332400Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IVoCH6Y9Y4mJB6cE39On3M460wmFM39802C4lviAl86r211boqTd1VpjhHv7OS+F8Qc7suwSHuHY5sn69kTsAA==","signature_status":"signed_v1","signed_at":"2026-07-04T23:50:26.332812Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.12944","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:807190d74f95db81846e169f0974cdcad33bd0a7e39d22edfa127a4e5aef5122","sha256:30c8083a42e436582751a054467d5b669da9b10a8468af6417f84ecb85dab39e"],"state_sha256":"3d6b9c8bb7a59fadce99e112effec4579da5236dc509b32d7624edef2f825dfb"}