{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:4EF6QA2WZDDTODFPLPDA4OEIMA","short_pith_number":"pith:4EF6QA2W","schema_version":"1.0","canonical_sha256":"e10be80356c8c7370caf5bc60e3888602edd47d3754169e2d0d0530716a93866","source":{"kind":"arxiv","id":"0907.0504","version":1},"attestation_state":"computed","paper":{"title":"Effect of next-nearest neighbor coupling on the optical spectra in bilayer graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. R. Wright, C. Zhang, Feng Liu","submitted_at":"2009-07-02T23:56:07Z","abstract_excerpt":"We investigate the dependence of the optical conductivity of bilayer graphene (BLG) on the intra- and inter-layer interactions using the most complete model to date. We show that the next nearest-neighbor intralayer coupling introduces new features in the low-energy spectrum that are highly sensitive to sample doping, changing significantly the ``universal'' conductance. Further, its interplay with interlayer couplings leads to an anisotropy in conductance in the ultraviolet range. We propose that experimental measurement of the optical conductivity of intrinsic and doped BLG will provide a go"},"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":"0907.0504","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-07-02T23:56:07Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"ef720f5dec0fdf9ef2a99992d4c3a4923c946cddb97d82b5e44253bd53a7f4ce","abstract_canon_sha256":"cb61bc5f93fc827aa31a83b205760a875fa144ecfb2011df58a9d3db2dbe0e50"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:13:05.584804Z","signature_b64":"zSLvxJ6eSAGiIUKL1RpBXta+o6wQEp7+3Mrf3Az5VsZUwiQJwsvWhjhTph2VLRmREVr0IJ9VOKP0PSKXszNEAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e10be80356c8c7370caf5bc60e3888602edd47d3754169e2d0d0530716a93866","last_reissued_at":"2026-05-18T02:13:05.583952Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:13:05.583952Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Effect of next-nearest neighbor coupling on the optical spectra in bilayer graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. R. Wright, C. Zhang, Feng Liu","submitted_at":"2009-07-02T23:56:07Z","abstract_excerpt":"We investigate the dependence of the optical conductivity of bilayer graphene (BLG) on the intra- and inter-layer interactions using the most complete model to date. We show that the next nearest-neighbor intralayer coupling introduces new features in the low-energy spectrum that are highly sensitive to sample doping, changing significantly the ``universal'' conductance. Further, its interplay with interlayer couplings leads to an anisotropy in conductance in the ultraviolet range. We propose that experimental measurement of the optical conductivity of intrinsic and doped BLG will provide a go"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.0504","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":"0907.0504","created_at":"2026-05-18T02:13:05.584062+00:00"},{"alias_kind":"arxiv_version","alias_value":"0907.0504v1","created_at":"2026-05-18T02:13:05.584062+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.0504","created_at":"2026-05-18T02:13:05.584062+00:00"},{"alias_kind":"pith_short_12","alias_value":"4EF6QA2WZDDT","created_at":"2026-05-18T12:25:58.837520+00:00"},{"alias_kind":"pith_short_16","alias_value":"4EF6QA2WZDDTODFP","created_at":"2026-05-18T12:25:58.837520+00:00"},{"alias_kind":"pith_short_8","alias_value":"4EF6QA2W","created_at":"2026-05-18T12:25:58.837520+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/4EF6QA2WZDDTODFPLPDA4OEIMA","json":"https://pith.science/pith/4EF6QA2WZDDTODFPLPDA4OEIMA.json","graph_json":"https://pith.science/api/pith-number/4EF6QA2WZDDTODFPLPDA4OEIMA/graph.json","events_json":"https://pith.science/api/pith-number/4EF6QA2WZDDTODFPLPDA4OEIMA/events.json","paper":"https://pith.science/paper/4EF6QA2W"},"agent_actions":{"view_html":"https://pith.science/pith/4EF6QA2WZDDTODFPLPDA4OEIMA","download_json":"https://pith.science/pith/4EF6QA2WZDDTODFPLPDA4OEIMA.json","view_paper":"https://pith.science/paper/4EF6QA2W","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0907.0504&json=true","fetch_graph":"https://pith.science/api/pith-number/4EF6QA2WZDDTODFPLPDA4OEIMA/graph.json","fetch_events":"https://pith.science/api/pith-number/4EF6QA2WZDDTODFPLPDA4OEIMA/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4EF6QA2WZDDTODFPLPDA4OEIMA/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4EF6QA2WZDDTODFPLPDA4OEIMA/action/storage_attestation","attest_author":"https://pith.science/pith/4EF6QA2WZDDTODFPLPDA4OEIMA/action/author_attestation","sign_citation":"https://pith.science/pith/4EF6QA2WZDDTODFPLPDA4OEIMA/action/citation_signature","submit_replication":"https://pith.science/pith/4EF6QA2WZDDTODFPLPDA4OEIMA/action/replication_record"}},"created_at":"2026-05-18T02:13:05.584062+00:00","updated_at":"2026-05-18T02:13:05.584062+00:00"}