{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:7WJSW4HWYVDJ2HS5L65CRT2CXI","short_pith_number":"pith:7WJSW4HW","schema_version":"1.0","canonical_sha256":"fd932b70f6c5469d1e5d5fba28cf42ba0154fd37dd29be4f69df2e318f4ce8d9","source":{"kind":"arxiv","id":"1809.01920","version":1},"attestation_state":"computed","paper":{"title":"Topologically non-trivial valley states in bilayer graphene quantum point contacts","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Angelika Knothe, David S\\'anchez, Florian Libisch, Hiske Overweg, Joachim Burgd\\\"orfer, Kenji Watanabe, Klaus Ensslin, Lucien Wernli, Lukas Linhart, Peter Rickhaus, Takashi Taniguchi, Thomas Fabian, Thomas Ihn, Vladimir I. Fal'ko","submitted_at":"2018-09-06T10:54:37Z","abstract_excerpt":"We present measurements of quantized conductance in electrostatically induced quantum point contacts in bilayer graphene. The application of a perpendicular magnetic field leads to an intricate pattern of lifted and restored degeneracies with increasing field: at zero magnetic field the degeneracy of quantized one-dimensional subbands is four, because of a twofold spin and a twofold valley degeneracy. By switching on the magnetic field, the valley degeneracy is lifted. Due to the Berry curvature states from different valleys split linearly in magnetic field. In the quantum Hall regime fourfold"},"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":"1809.01920","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-09-06T10:54:37Z","cross_cats_sorted":[],"title_canon_sha256":"b3e9830d62d73385472dec92b3423d58ad3819a7df625c9e17f24a1f9e6e1368","abstract_canon_sha256":"21cad164ea0e708f9a290990741646b33976028897563826e7f90ea8f3ad08cc"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:57:35.991348Z","signature_b64":"/+uC1LjUYDZTXeQyUSBamxwKmoFujBLw1yruBM4ltZVlcm34unvf4s1p1M3Qhx/M69vNrWwwnwlkXCYNgsq2Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fd932b70f6c5469d1e5d5fba28cf42ba0154fd37dd29be4f69df2e318f4ce8d9","last_reissued_at":"2026-05-17T23:57:35.990719Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:57:35.990719Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Topologically non-trivial valley states in bilayer graphene quantum point contacts","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Angelika Knothe, David S\\'anchez, Florian Libisch, Hiske Overweg, Joachim Burgd\\\"orfer, Kenji Watanabe, Klaus Ensslin, Lucien Wernli, Lukas Linhart, Peter Rickhaus, Takashi Taniguchi, Thomas Fabian, Thomas Ihn, Vladimir I. Fal'ko","submitted_at":"2018-09-06T10:54:37Z","abstract_excerpt":"We present measurements of quantized conductance in electrostatically induced quantum point contacts in bilayer graphene. The application of a perpendicular magnetic field leads to an intricate pattern of lifted and restored degeneracies with increasing field: at zero magnetic field the degeneracy of quantized one-dimensional subbands is four, because of a twofold spin and a twofold valley degeneracy. By switching on the magnetic field, the valley degeneracy is lifted. Due to the Berry curvature states from different valleys split linearly in magnetic field. In the quantum Hall regime fourfold"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.01920","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":"1809.01920","created_at":"2026-05-17T23:57:35.990804+00:00"},{"alias_kind":"arxiv_version","alias_value":"1809.01920v1","created_at":"2026-05-17T23:57:35.990804+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.01920","created_at":"2026-05-17T23:57:35.990804+00:00"},{"alias_kind":"pith_short_12","alias_value":"7WJSW4HWYVDJ","created_at":"2026-05-18T12:32:11.075285+00:00"},{"alias_kind":"pith_short_16","alias_value":"7WJSW4HWYVDJ2HS5","created_at":"2026-05-18T12:32:11.075285+00:00"},{"alias_kind":"pith_short_8","alias_value":"7WJSW4HW","created_at":"2026-05-18T12:32:11.075285+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/7WJSW4HWYVDJ2HS5L65CRT2CXI","json":"https://pith.science/pith/7WJSW4HWYVDJ2HS5L65CRT2CXI.json","graph_json":"https://pith.science/api/pith-number/7WJSW4HWYVDJ2HS5L65CRT2CXI/graph.json","events_json":"https://pith.science/api/pith-number/7WJSW4HWYVDJ2HS5L65CRT2CXI/events.json","paper":"https://pith.science/paper/7WJSW4HW"},"agent_actions":{"view_html":"https://pith.science/pith/7WJSW4HWYVDJ2HS5L65CRT2CXI","download_json":"https://pith.science/pith/7WJSW4HWYVDJ2HS5L65CRT2CXI.json","view_paper":"https://pith.science/paper/7WJSW4HW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1809.01920&json=true","fetch_graph":"https://pith.science/api/pith-number/7WJSW4HWYVDJ2HS5L65CRT2CXI/graph.json","fetch_events":"https://pith.science/api/pith-number/7WJSW4HWYVDJ2HS5L65CRT2CXI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/7WJSW4HWYVDJ2HS5L65CRT2CXI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/7WJSW4HWYVDJ2HS5L65CRT2CXI/action/storage_attestation","attest_author":"https://pith.science/pith/7WJSW4HWYVDJ2HS5L65CRT2CXI/action/author_attestation","sign_citation":"https://pith.science/pith/7WJSW4HWYVDJ2HS5L65CRT2CXI/action/citation_signature","submit_replication":"https://pith.science/pith/7WJSW4HWYVDJ2HS5L65CRT2CXI/action/replication_record"}},"created_at":"2026-05-17T23:57:35.990804+00:00","updated_at":"2026-05-17T23:57:35.990804+00:00"}