{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:L7JWBADBQIKTCC2V2ZKNSTQB4I","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":"ceb46400fd3aa392eb6a1578ea153c7e126ee4b4c3786e95b2803607ea4e91d3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-11-16T17:03:46Z","title_canon_sha256":"697a81ca8beb5e2260221d39795404e0f4401925acc6f9b02988401df3710ec8"},"schema_version":"1.0","source":{"id":"1511.05034","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.05034","created_at":"2026-05-18T01:22:46Z"},{"alias_kind":"arxiv_version","alias_value":"1511.05034v2","created_at":"2026-05-18T01:22:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.05034","created_at":"2026-05-18T01:22:46Z"},{"alias_kind":"pith_short_12","alias_value":"L7JWBADBQIKT","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"L7JWBADBQIKTCC2V","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"L7JWBADB","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:ccbef598a9fc19185e8b5beba739ff6c11a7e1e65fc415c1ed346b8aafa64e87","target":"graph","created_at":"2026-05-18T01:22:46Z","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":"We investigate the effects of long-range potential fluctuations and electron-electron interactions on electronic and magnetic properties of graphene nanoribbons with zigzag edges using an extended mean-field Hubbard model. We show that electron-electron interactions make the edge states robust against potential fluctuations. When the disorder is strong enough, the presence of electron-hole puddles induces a magnetic phase transition from antiferromagnetically coupled edge states to ferromagnetic coupling, in agreement with recent experimental results.","authors_text":"A. Alt{\\i}nta\\c{s}, A. D. G\\\"u\\c{c}l\\\"u, H. U. \\\"Ozdemir","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-11-16T17:03:46Z","title":"Magnetic Phases of Graphene Nanoribbons under Potential Fluctuations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.05034","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:b2399954290cc20bb7e2137c5e3eef88a21e7f4c2ac35f962dfb3162561325de","target":"record","created_at":"2026-05-18T01:22:46Z","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":"ceb46400fd3aa392eb6a1578ea153c7e126ee4b4c3786e95b2803607ea4e91d3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-11-16T17:03:46Z","title_canon_sha256":"697a81ca8beb5e2260221d39795404e0f4401925acc6f9b02988401df3710ec8"},"schema_version":"1.0","source":{"id":"1511.05034","kind":"arxiv","version":2}},"canonical_sha256":"5fd36080618215310b55d654d94e01e22898856ddd681dff96b393bf947f0b4c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5fd36080618215310b55d654d94e01e22898856ddd681dff96b393bf947f0b4c","first_computed_at":"2026-05-18T01:22:46.267347Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:22:46.267347Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4s3yikO4wEXZSjy7MXI2ug8CInka2dII22rRJUgyfeGGWjYKsQ27d+VJz2tYp9Xh1nBLxU99z51cjvYMR/dKAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:22:46.267901Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.05034","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b2399954290cc20bb7e2137c5e3eef88a21e7f4c2ac35f962dfb3162561325de","sha256:ccbef598a9fc19185e8b5beba739ff6c11a7e1e65fc415c1ed346b8aafa64e87"],"state_sha256":"3dabc60325cce7e9b7edda0fb20e19a712318b6ba81cd47bf4b3ddd19c56d693"}