{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:ONGDTEOFXLP644F5NAFEXOCZXA","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":"693fa219499d502ea0fe7a5a4a7d1f99d6a8fb1fa4747ef993ab053cd32c54ec","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-01-22T22:51:48Z","title_canon_sha256":"72186bccc6b513228d73b050964359bb729ddb8bfb0f77e880c89d2703d7b294"},"schema_version":"1.0","source":{"id":"0901.3573","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0901.3573","created_at":"2026-05-18T02:14:56Z"},{"alias_kind":"arxiv_version","alias_value":"0901.3573v1","created_at":"2026-05-18T02:14:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0901.3573","created_at":"2026-05-18T02:14:56Z"},{"alias_kind":"pith_short_12","alias_value":"ONGDTEOFXLP6","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"ONGDTEOFXLP644F5","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"ONGDTEOF","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:d34637781f9f146e8abde99bd253b61094c65a3ae578e39d50d80924f30b35ab","target":"graph","created_at":"2026-05-18T02:14:56Z","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 calculate the non-linear conductance of a quantum point contact using the non-equilibrium Greens function technique within the Hartree approximation of spinless electrons. We quantitative reproduce the 0.25-anomaly in the differential conductance (i.e. the lowest plateau at 0.25-0.3*2e^2/h) as well as an upward bending of higher conductance half-integer plateaus seen in the experiments, and relate these features to the non-linear screening and pinning effects.","authors_text":"I. V. Zozoulenko, S. Ihnatsenka","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-01-22T22:51:48Z","title":"Origin of the 0.25-anomaly in the nonlinear conductance of a quantum point contact"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0901.3573","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:a9ecac49c6adb18f37527a1901f38a0d0582e06297a6b0e4603cf690731d15dd","target":"record","created_at":"2026-05-18T02:14:56Z","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":"693fa219499d502ea0fe7a5a4a7d1f99d6a8fb1fa4747ef993ab053cd32c54ec","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-01-22T22:51:48Z","title_canon_sha256":"72186bccc6b513228d73b050964359bb729ddb8bfb0f77e880c89d2703d7b294"},"schema_version":"1.0","source":{"id":"0901.3573","kind":"arxiv","version":1}},"canonical_sha256":"734c3991c5badfee70bd680a4bb859b826b50e0e1a6754bf25a352b6896b6c5b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"734c3991c5badfee70bd680a4bb859b826b50e0e1a6754bf25a352b6896b6c5b","first_computed_at":"2026-05-18T02:14:56.191562Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:14:56.191562Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Uo6TsK/vPpT1EWv6Uf81NU64RkXMkzVZ8k0CgZ6sp3swS/bsh/yNJtIp77gKnAfyXVBNcHlnsqLWzejd5B9jBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:14:56.192016Z","signed_message":"canonical_sha256_bytes"},"source_id":"0901.3573","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a9ecac49c6adb18f37527a1901f38a0d0582e06297a6b0e4603cf690731d15dd","sha256:d34637781f9f146e8abde99bd253b61094c65a3ae578e39d50d80924f30b35ab"],"state_sha256":"10281d0496a0e307d28e1748bab6d72bb957cb0701c2a710a63fa239b95c4d9b"}