{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:UXJCKZJMNNROM4MRLJ47LLKGSM","short_pith_number":"pith:UXJCKZJM","canonical_record":{"source":{"id":"1409.4272","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-09-15T14:24:56Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"ecbd5200f5077802e781a35edc9de9f5dec389bbd6ef4c300f424d4c94cc5593","abstract_canon_sha256":"ea7167ab34a198588032cbc0750b76e9679828cf828bfb425a695b1fdefd64c3"},"schema_version":"1.0"},"canonical_sha256":"a5d225652c6b62e671915a79f5ad4693381d744af6d85a054234e7dd5e966c4f","source":{"kind":"arxiv","id":"1409.4272","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.4272","created_at":"2026-05-18T01:42:02Z"},{"alias_kind":"arxiv_version","alias_value":"1409.4272v3","created_at":"2026-05-18T01:42:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.4272","created_at":"2026-05-18T01:42:02Z"},{"alias_kind":"pith_short_12","alias_value":"UXJCKZJMNNRO","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"UXJCKZJMNNROM4MR","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"UXJCKZJM","created_at":"2026-05-18T12:28:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:UXJCKZJMNNROM4MRLJ47LLKGSM","target":"record","payload":{"canonical_record":{"source":{"id":"1409.4272","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-09-15T14:24:56Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"ecbd5200f5077802e781a35edc9de9f5dec389bbd6ef4c300f424d4c94cc5593","abstract_canon_sha256":"ea7167ab34a198588032cbc0750b76e9679828cf828bfb425a695b1fdefd64c3"},"schema_version":"1.0"},"canonical_sha256":"a5d225652c6b62e671915a79f5ad4693381d744af6d85a054234e7dd5e966c4f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:02.572654Z","signature_b64":"41IObXO3f9YRItY2cIAYRiZ8niHc+Uzw2rRn9aT4E4GxeDWQ6q5VM9e5YVNXdr7puv7F9aNYrUkRE91N9qyBBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a5d225652c6b62e671915a79f5ad4693381d744af6d85a054234e7dd5e966c4f","last_reissued_at":"2026-05-18T01:42:02.572114Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:02.572114Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1409.4272","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:42:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W0DiMzQRQ1uhDUSw/gOtJ3VCe89gU4nYzWTWR0AcUk7RcGu2qz4ZcCV/1H1zWXm3tZulH15X5zT8ZaQsX6DtBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T23:51:03.455542Z"},"content_sha256":"5377f715b1064ddad09631dffbe85333feddce62e2f9ae67555ce9676dee47ab","schema_version":"1.0","event_id":"sha256:5377f715b1064ddad09631dffbe85333feddce62e2f9ae67555ce9676dee47ab"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:UXJCKZJMNNROM4MRLJ47LLKGSM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Europium Underneath Graphene on Ir(111): Intercalation Mechanism, Magnetism, and Band Structure","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"Antonio J. Mart\\'inez-Galera, Chi Vo-Van, Christian Witt, Daniel F. F\\\"orster, Felix Huttmann, Frank Meyer zu Heringdorf, Ignacio Vergara, Johann Coraux, Marin Petrovi\\'c, Marko Kralj, Markus Gr\\\"uninger, Nicolas Schleheck, Philippe Ohresser, Reinhard R\\\"uckamp, Stefan Schumacher, Thomas Michely, Tim O. Wehling, Violetta Sessi","submitted_at":"2014-09-15T14:24:56Z","abstract_excerpt":"The intercalation of Eu underneath Gr on Ir(111) is comprehensively investigated by microscopic, magnetic, and spectroscopic measurements, as well as by density functional theory. Depending on the coverage, the intercalated Eu atoms form either a $(2 \\times 2)$ or a $(\\sqrt{3} \\times \\sqrt{3})$R$30^{\\circ}$ superstructure with respect to Gr. We investigate the mechanisms of Eu penetration through a nominally closed Gr sheet and measure the electronic structures and magnetic properties of the two intercalation systems. Their electronic structures are rather similar. Compared to Gr on Ir(111), t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.4272","kind":"arxiv","version":3},"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":"2026-05-18T01:42:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bo7zBynm8BqUY8L0751JJdyDpdK1sHGQDLEFXorL/2ltfA4z7QvsuDRFRPyNc9ZyrUMSQOrt/oBOJWWLhYyBBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T23:51:03.456228Z"},"content_sha256":"3023f96f83bc9ddb13a4a18c800a0886f0418da941535d80f03f9b13fc1aad73","schema_version":"1.0","event_id":"sha256:3023f96f83bc9ddb13a4a18c800a0886f0418da941535d80f03f9b13fc1aad73"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UXJCKZJMNNROM4MRLJ47LLKGSM/bundle.json","state_url":"https://pith.science/pith/UXJCKZJMNNROM4MRLJ47LLKGSM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UXJCKZJMNNROM4MRLJ47LLKGSM/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":"2026-05-30T23:51:03Z","links":{"resolver":"https://pith.science/pith/UXJCKZJMNNROM4MRLJ47LLKGSM","bundle":"https://pith.science/pith/UXJCKZJMNNROM4MRLJ47LLKGSM/bundle.json","state":"https://pith.science/pith/UXJCKZJMNNROM4MRLJ47LLKGSM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UXJCKZJMNNROM4MRLJ47LLKGSM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:UXJCKZJMNNROM4MRLJ47LLKGSM","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":"ea7167ab34a198588032cbc0750b76e9679828cf828bfb425a695b1fdefd64c3","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-09-15T14:24:56Z","title_canon_sha256":"ecbd5200f5077802e781a35edc9de9f5dec389bbd6ef4c300f424d4c94cc5593"},"schema_version":"1.0","source":{"id":"1409.4272","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.4272","created_at":"2026-05-18T01:42:02Z"},{"alias_kind":"arxiv_version","alias_value":"1409.4272v3","created_at":"2026-05-18T01:42:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.4272","created_at":"2026-05-18T01:42:02Z"},{"alias_kind":"pith_short_12","alias_value":"UXJCKZJMNNRO","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"UXJCKZJMNNROM4MR","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"UXJCKZJM","created_at":"2026-05-18T12:28:52Z"}],"graph_snapshots":[{"event_id":"sha256:3023f96f83bc9ddb13a4a18c800a0886f0418da941535d80f03f9b13fc1aad73","target":"graph","created_at":"2026-05-18T01:42:02Z","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":"The intercalation of Eu underneath Gr on Ir(111) is comprehensively investigated by microscopic, magnetic, and spectroscopic measurements, as well as by density functional theory. Depending on the coverage, the intercalated Eu atoms form either a $(2 \\times 2)$ or a $(\\sqrt{3} \\times \\sqrt{3})$R$30^{\\circ}$ superstructure with respect to Gr. We investigate the mechanisms of Eu penetration through a nominally closed Gr sheet and measure the electronic structures and magnetic properties of the two intercalation systems. Their electronic structures are rather similar. Compared to Gr on Ir(111), t","authors_text":"Antonio J. Mart\\'inez-Galera, Chi Vo-Van, Christian Witt, Daniel F. F\\\"orster, Felix Huttmann, Frank Meyer zu Heringdorf, Ignacio Vergara, Johann Coraux, Marin Petrovi\\'c, Marko Kralj, Markus Gr\\\"uninger, Nicolas Schleheck, Philippe Ohresser, Reinhard R\\\"uckamp, Stefan Schumacher, Thomas Michely, Tim O. Wehling, Violetta Sessi","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-09-15T14:24:56Z","title":"Europium Underneath Graphene on Ir(111): Intercalation Mechanism, Magnetism, and Band Structure"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.4272","kind":"arxiv","version":3},"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":"sha256:5377f715b1064ddad09631dffbe85333feddce62e2f9ae67555ce9676dee47ab","target":"record","created_at":"2026-05-18T01:42:02Z","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":"ea7167ab34a198588032cbc0750b76e9679828cf828bfb425a695b1fdefd64c3","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-09-15T14:24:56Z","title_canon_sha256":"ecbd5200f5077802e781a35edc9de9f5dec389bbd6ef4c300f424d4c94cc5593"},"schema_version":"1.0","source":{"id":"1409.4272","kind":"arxiv","version":3}},"canonical_sha256":"a5d225652c6b62e671915a79f5ad4693381d744af6d85a054234e7dd5e966c4f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a5d225652c6b62e671915a79f5ad4693381d744af6d85a054234e7dd5e966c4f","first_computed_at":"2026-05-18T01:42:02.572114Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:02.572114Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"41IObXO3f9YRItY2cIAYRiZ8niHc+Uzw2rRn9aT4E4GxeDWQ6q5VM9e5YVNXdr7puv7F9aNYrUkRE91N9qyBBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:02.572654Z","signed_message":"canonical_sha256_bytes"},"source_id":"1409.4272","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5377f715b1064ddad09631dffbe85333feddce62e2f9ae67555ce9676dee47ab","sha256:3023f96f83bc9ddb13a4a18c800a0886f0418da941535d80f03f9b13fc1aad73"],"state_sha256":"279c645abe4480ba8b3e7373c958a0a9c613959d78cca33a8a0a66d7bbdb358c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LTqt+aQSq644nJ5XNfEtNmukP+PXCvvstnof9tVcJQ6rwBnJY4q+s/w6gPNFYKLjERdYcDxnIOHCCUKYA7Z+Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T23:51:03.459981Z","bundle_sha256":"b255617bf790ce4868d099b28d4e61d60f088b3a84c154fd655828d98c0ac5e9"}}