{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:LMPB7PRTOKTSZWOD77AYTUTKC4","short_pith_number":"pith:LMPB7PRT","schema_version":"1.0","canonical_sha256":"5b1e1fbe3372a72cd9c3ffc189d26a1724edc8d355cff28ef3b26d2b5e46ac43","source":{"kind":"arxiv","id":"1507.01257","version":1},"attestation_state":"computed","paper":{"title":"Quantum transport at the Dirac point: Mapping out the minimum conductivity from pristine to disordered graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Avik W. Ghosh, Frank Tseng, K. M. Masum Habib, Redwan N. Sajjad","submitted_at":"2015-07-05T19:01:25Z","abstract_excerpt":"The phase space for graphene's minimum conductivity $\\sigma_\\mathrm{min}$ is mapped out using Landauer theory modified for scattering using Fermi's Golden Rule, as well as the Non-Equilibrium Green's Function (NEGF) simulation with a Monte Carlo sampling over impurity distributions. The resulting `fan diagram' spans the range from ballistic to diffusive over varying aspect ratios ($W/L$), and bears several surprises. {The device aspect ratio determines how much tunneling (between contacts) is allowed and becomes the dominant factor for the evolution of $\\sigma_{min}$ from ballistic to diffusiv"},"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":"1507.01257","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-07-05T19:01:25Z","cross_cats_sorted":[],"title_canon_sha256":"f4295b889deb87c16ccd9a2c5eef5fb5602c67216fccec84870b80f924d32fe5","abstract_canon_sha256":"ee3ef0fdd19af3a81118389dfe92791dffe592f88c3e080d97141a43c1a3af39"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:27:23.194110Z","signature_b64":"iADlJdVo+1CNIzVTcqYrtnRtU0mtL5Q8FC3ZzagjHqhbFNqmiKXym3dR69/L7nXx4nvMg2SvNKGrPa+ykSnmBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5b1e1fbe3372a72cd9c3ffc189d26a1724edc8d355cff28ef3b26d2b5e46ac43","last_reissued_at":"2026-05-18T01:27:23.193697Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:27:23.193697Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Quantum transport at the Dirac point: Mapping out the minimum conductivity from pristine to disordered graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Avik W. Ghosh, Frank Tseng, K. M. Masum Habib, Redwan N. Sajjad","submitted_at":"2015-07-05T19:01:25Z","abstract_excerpt":"The phase space for graphene's minimum conductivity $\\sigma_\\mathrm{min}$ is mapped out using Landauer theory modified for scattering using Fermi's Golden Rule, as well as the Non-Equilibrium Green's Function (NEGF) simulation with a Monte Carlo sampling over impurity distributions. The resulting `fan diagram' spans the range from ballistic to diffusive over varying aspect ratios ($W/L$), and bears several surprises. {The device aspect ratio determines how much tunneling (between contacts) is allowed and becomes the dominant factor for the evolution of $\\sigma_{min}$ from ballistic to diffusiv"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.01257","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":"1507.01257","created_at":"2026-05-18T01:27:23.193757+00:00"},{"alias_kind":"arxiv_version","alias_value":"1507.01257v1","created_at":"2026-05-18T01:27:23.193757+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.01257","created_at":"2026-05-18T01:27:23.193757+00:00"},{"alias_kind":"pith_short_12","alias_value":"LMPB7PRTOKTS","created_at":"2026-05-18T12:29:29.992203+00:00"},{"alias_kind":"pith_short_16","alias_value":"LMPB7PRTOKTSZWOD","created_at":"2026-05-18T12:29:29.992203+00:00"},{"alias_kind":"pith_short_8","alias_value":"LMPB7PRT","created_at":"2026-05-18T12:29:29.992203+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/LMPB7PRTOKTSZWOD77AYTUTKC4","json":"https://pith.science/pith/LMPB7PRTOKTSZWOD77AYTUTKC4.json","graph_json":"https://pith.science/api/pith-number/LMPB7PRTOKTSZWOD77AYTUTKC4/graph.json","events_json":"https://pith.science/api/pith-number/LMPB7PRTOKTSZWOD77AYTUTKC4/events.json","paper":"https://pith.science/paper/LMPB7PRT"},"agent_actions":{"view_html":"https://pith.science/pith/LMPB7PRTOKTSZWOD77AYTUTKC4","download_json":"https://pith.science/pith/LMPB7PRTOKTSZWOD77AYTUTKC4.json","view_paper":"https://pith.science/paper/LMPB7PRT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1507.01257&json=true","fetch_graph":"https://pith.science/api/pith-number/LMPB7PRTOKTSZWOD77AYTUTKC4/graph.json","fetch_events":"https://pith.science/api/pith-number/LMPB7PRTOKTSZWOD77AYTUTKC4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LMPB7PRTOKTSZWOD77AYTUTKC4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LMPB7PRTOKTSZWOD77AYTUTKC4/action/storage_attestation","attest_author":"https://pith.science/pith/LMPB7PRTOKTSZWOD77AYTUTKC4/action/author_attestation","sign_citation":"https://pith.science/pith/LMPB7PRTOKTSZWOD77AYTUTKC4/action/citation_signature","submit_replication":"https://pith.science/pith/LMPB7PRTOKTSZWOD77AYTUTKC4/action/replication_record"}},"created_at":"2026-05-18T01:27:23.193757+00:00","updated_at":"2026-05-18T01:27:23.193757+00:00"}