{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:XPGVL3FXREQ5ARI6OR77I374BD","short_pith_number":"pith:XPGVL3FX","schema_version":"1.0","canonical_sha256":"bbcd55ecb78921d0451e747ff46ffc08db682569993dff8b96bd445d5b60e38a","source":{"kind":"arxiv","id":"1811.10482","version":1},"attestation_state":"computed","paper":{"title":"Electronic Structure of Beta-Ta Films from X-ray Photoelectron Spectroscopy and First-principles Calculations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Fredrik Eriksson, Grzegorz Greczynski, Hans H\\\"ogberg, Lars Hultman, Martin Magnuson","submitted_at":"2018-11-26T16:21:41Z","abstract_excerpt":"The electronic structure and chemical bonding of Beta-Ta synthesized as a thin 001-oriented film (space group P421m) is investigated by 4f core level and valence band X-ray photoelectron spectroscopy and compared to alfa-Ta bulk. For the Beta-phase, the 4f7/2 peak is located at 21.91 eV and with the 4f5/2 at 23.81 eV which is 0.16 eV higher compared to the corresponding 4f peaks of the alfa-Ta reference. We suggest that this chemical shift originates from electron screening, higher resistivity or strain in the Beta-Ta film. Furthermore, the 5d-5s states at the bottom of the valence band are sh"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1811.10482","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-11-26T16:21:41Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"a673c3f6f8c59514e580bb2e0a3a3ffd6013f4eb22e05a1719b10c5b3985ae3c","abstract_canon_sha256":"cd8aa14d17f0e8f62a30d08a76126dbba9db9a082958d63e32855c5a9cb60b3c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:59:54.589322Z","signature_b64":"1uzRqF1Nlldu76adoIepyQpyar0+PSUhvv5fvaPJuylYNDcS1gQ40lIQ1dO1mz3XJj5IjxM0oizyU0FORfVyDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bbcd55ecb78921d0451e747ff46ffc08db682569993dff8b96bd445d5b60e38a","last_reissued_at":"2026-05-17T23:59:54.588810Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:59:54.588810Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Electronic Structure of Beta-Ta Films from X-ray Photoelectron Spectroscopy and First-principles Calculations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Fredrik Eriksson, Grzegorz Greczynski, Hans H\\\"ogberg, Lars Hultman, Martin Magnuson","submitted_at":"2018-11-26T16:21:41Z","abstract_excerpt":"The electronic structure and chemical bonding of Beta-Ta synthesized as a thin 001-oriented film (space group P421m) is investigated by 4f core level and valence band X-ray photoelectron spectroscopy and compared to alfa-Ta bulk. For the Beta-phase, the 4f7/2 peak is located at 21.91 eV and with the 4f5/2 at 23.81 eV which is 0.16 eV higher compared to the corresponding 4f peaks of the alfa-Ta reference. We suggest that this chemical shift originates from electron screening, higher resistivity or strain in the Beta-Ta film. Furthermore, the 5d-5s states at the bottom of the valence band are sh"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.10482","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1811.10482","created_at":"2026-05-17T23:59:54.588897+00:00"},{"alias_kind":"arxiv_version","alias_value":"1811.10482v1","created_at":"2026-05-17T23:59:54.588897+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.10482","created_at":"2026-05-17T23:59:54.588897+00:00"},{"alias_kind":"pith_short_12","alias_value":"XPGVL3FXREQ5","created_at":"2026-05-18T12:33:01.666342+00:00"},{"alias_kind":"pith_short_16","alias_value":"XPGVL3FXREQ5ARI6","created_at":"2026-05-18T12:33:01.666342+00:00"},{"alias_kind":"pith_short_8","alias_value":"XPGVL3FX","created_at":"2026-05-18T12:33:01.666342+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/XPGVL3FXREQ5ARI6OR77I374BD","json":"https://pith.science/pith/XPGVL3FXREQ5ARI6OR77I374BD.json","graph_json":"https://pith.science/api/pith-number/XPGVL3FXREQ5ARI6OR77I374BD/graph.json","events_json":"https://pith.science/api/pith-number/XPGVL3FXREQ5ARI6OR77I374BD/events.json","paper":"https://pith.science/paper/XPGVL3FX"},"agent_actions":{"view_html":"https://pith.science/pith/XPGVL3FXREQ5ARI6OR77I374BD","download_json":"https://pith.science/pith/XPGVL3FXREQ5ARI6OR77I374BD.json","view_paper":"https://pith.science/paper/XPGVL3FX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1811.10482&json=true","fetch_graph":"https://pith.science/api/pith-number/XPGVL3FXREQ5ARI6OR77I374BD/graph.json","fetch_events":"https://pith.science/api/pith-number/XPGVL3FXREQ5ARI6OR77I374BD/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XPGVL3FXREQ5ARI6OR77I374BD/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XPGVL3FXREQ5ARI6OR77I374BD/action/storage_attestation","attest_author":"https://pith.science/pith/XPGVL3FXREQ5ARI6OR77I374BD/action/author_attestation","sign_citation":"https://pith.science/pith/XPGVL3FXREQ5ARI6OR77I374BD/action/citation_signature","submit_replication":"https://pith.science/pith/XPGVL3FXREQ5ARI6OR77I374BD/action/replication_record"}},"created_at":"2026-05-17T23:59:54.588897+00:00","updated_at":"2026-05-17T23:59:54.588897+00:00"}