{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:3XN3WNDJB7MPL3OL46OD7MDQPM","short_pith_number":"pith:3XN3WNDJ","schema_version":"1.0","canonical_sha256":"dddbbb34690fd8f5edcbe79c3fb0707b2155ccb843ac3ba55edd4d0c2e2f6513","source":{"kind":"arxiv","id":"0907.5396","version":1},"attestation_state":"computed","paper":{"title":"Breakdown of Particle-Hole Symmetry in the Lowest Landau Level Revealed by Tunneling Spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"J.P. Eisenstein, K.W. West, L.N. Pfeiffer","submitted_at":"2009-07-30T18:48:34Z","abstract_excerpt":"Tunneling measurements on 2D electron gases at high magnetic field reveal a qualitative difference between the two spin sublevels of the lowest Landau level. While the tunneling current-voltage characteristic at filling factor $\\nu = 1/2$ is a single peak shifted from zero bias by a Coulomb pseudogap, the spectrum at $\\nu=3/2$ shows a well-resolved double peak structure. This difference is present regardless of whether $\\nu =1/2$ and $\\nu = 3/2$ occur at the same or different magnetic fields. No analogous effect is seen at $\\nu = 5/2$ and 7/2 in the first excited Landau level."},"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":"0907.5396","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-07-30T18:48:34Z","cross_cats_sorted":[],"title_canon_sha256":"3a1dd2285c3eb550f1e4416157395fe1a00aac8e99cdf519f8cf8f3ef92912fc","abstract_canon_sha256":"dd3ef27b2e54d50083f98b23b3e07d302850d621ea9ff4bab85372155e45be99"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:47:09.115523Z","signature_b64":"XyOo9J9x4+Xbrvzgq/bjOaGd77/M6eojH9BPBlpxQbtHlNQrHKcM6x1a3E4IjJFSYxlIIYhXF69Qm5HP6X6pAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dddbbb34690fd8f5edcbe79c3fb0707b2155ccb843ac3ba55edd4d0c2e2f6513","last_reissued_at":"2026-05-18T03:47:09.114952Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:47:09.114952Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Breakdown of Particle-Hole Symmetry in the Lowest Landau Level Revealed by Tunneling Spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"J.P. Eisenstein, K.W. West, L.N. Pfeiffer","submitted_at":"2009-07-30T18:48:34Z","abstract_excerpt":"Tunneling measurements on 2D electron gases at high magnetic field reveal a qualitative difference between the two spin sublevels of the lowest Landau level. While the tunneling current-voltage characteristic at filling factor $\\nu = 1/2$ is a single peak shifted from zero bias by a Coulomb pseudogap, the spectrum at $\\nu=3/2$ shows a well-resolved double peak structure. This difference is present regardless of whether $\\nu =1/2$ and $\\nu = 3/2$ occur at the same or different magnetic fields. No analogous effect is seen at $\\nu = 5/2$ and 7/2 in the first excited Landau level."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.5396","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":"0907.5396","created_at":"2026-05-18T03:47:09.115042+00:00"},{"alias_kind":"arxiv_version","alias_value":"0907.5396v1","created_at":"2026-05-18T03:47:09.115042+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.5396","created_at":"2026-05-18T03:47:09.115042+00:00"},{"alias_kind":"pith_short_12","alias_value":"3XN3WNDJB7MP","created_at":"2026-05-18T12:25:58.018023+00:00"},{"alias_kind":"pith_short_16","alias_value":"3XN3WNDJB7MPL3OL","created_at":"2026-05-18T12:25:58.018023+00:00"},{"alias_kind":"pith_short_8","alias_value":"3XN3WNDJ","created_at":"2026-05-18T12:25:58.018023+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/3XN3WNDJB7MPL3OL46OD7MDQPM","json":"https://pith.science/pith/3XN3WNDJB7MPL3OL46OD7MDQPM.json","graph_json":"https://pith.science/api/pith-number/3XN3WNDJB7MPL3OL46OD7MDQPM/graph.json","events_json":"https://pith.science/api/pith-number/3XN3WNDJB7MPL3OL46OD7MDQPM/events.json","paper":"https://pith.science/paper/3XN3WNDJ"},"agent_actions":{"view_html":"https://pith.science/pith/3XN3WNDJB7MPL3OL46OD7MDQPM","download_json":"https://pith.science/pith/3XN3WNDJB7MPL3OL46OD7MDQPM.json","view_paper":"https://pith.science/paper/3XN3WNDJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0907.5396&json=true","fetch_graph":"https://pith.science/api/pith-number/3XN3WNDJB7MPL3OL46OD7MDQPM/graph.json","fetch_events":"https://pith.science/api/pith-number/3XN3WNDJB7MPL3OL46OD7MDQPM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3XN3WNDJB7MPL3OL46OD7MDQPM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3XN3WNDJB7MPL3OL46OD7MDQPM/action/storage_attestation","attest_author":"https://pith.science/pith/3XN3WNDJB7MPL3OL46OD7MDQPM/action/author_attestation","sign_citation":"https://pith.science/pith/3XN3WNDJB7MPL3OL46OD7MDQPM/action/citation_signature","submit_replication":"https://pith.science/pith/3XN3WNDJB7MPL3OL46OD7MDQPM/action/replication_record"}},"created_at":"2026-05-18T03:47:09.115042+00:00","updated_at":"2026-05-18T03:47:09.115042+00:00"}