{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:CA6PEBQABFV5SCG7GYJAZQ2HU7","short_pith_number":"pith:CA6PEBQA","canonical_record":{"source":{"id":"2207.02175","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-07-05T17:10:17Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"dde9700197c856f054103d48961acdf6afdc417ff9547fb79659e87c27f740d4","abstract_canon_sha256":"a03cc31253cfb8b94c100f9a4e0baaec87f48e2e5f5206c5ff08076584451594"},"schema_version":"1.0"},"canonical_sha256":"103cf20600096bd908df36120cc347a7ffd0d30f54baf60aab047fef07a34d3b","source":{"kind":"arxiv","id":"2207.02175","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.02175","created_at":"2026-07-05T04:51:10Z"},{"alias_kind":"arxiv_version","alias_value":"2207.02175v2","created_at":"2026-07-05T04:51:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.02175","created_at":"2026-07-05T04:51:10Z"},{"alias_kind":"pith_short_12","alias_value":"CA6PEBQABFV5","created_at":"2026-07-05T04:51:10Z"},{"alias_kind":"pith_short_16","alias_value":"CA6PEBQABFV5SCG7","created_at":"2026-07-05T04:51:10Z"},{"alias_kind":"pith_short_8","alias_value":"CA6PEBQA","created_at":"2026-07-05T04:51:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:CA6PEBQABFV5SCG7GYJAZQ2HU7","target":"record","payload":{"canonical_record":{"source":{"id":"2207.02175","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-07-05T17:10:17Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"dde9700197c856f054103d48961acdf6afdc417ff9547fb79659e87c27f740d4","abstract_canon_sha256":"a03cc31253cfb8b94c100f9a4e0baaec87f48e2e5f5206c5ff08076584451594"},"schema_version":"1.0"},"canonical_sha256":"103cf20600096bd908df36120cc347a7ffd0d30f54baf60aab047fef07a34d3b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:51:10.624384Z","signature_b64":"D++dvy4zUKQ70GeVjkJAgHb99P8g3A9PHXeU4ZsWiKQNXA+6EP0zJrreF7Qgv2jC2aUDQJ5ZqigLNmTUpNCmAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"103cf20600096bd908df36120cc347a7ffd0d30f54baf60aab047fef07a34d3b","last_reissued_at":"2026-07-05T04:51:10.623841Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:51:10.623841Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2207.02175","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:51:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5auk/K3WkYHr5IjFBE7IJXC0lo1/Tgqci+NLS6Vj/TnhqEqVB1q8yYpNaHTlcL+KgQUpDHFmJpWsbOhd6FWbBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T21:55:49.486356Z"},"content_sha256":"34ec33ed4e801e90e55419d399f1e7ef7a7ac0924d9878ff990ac7b9f1cd4746","schema_version":"1.0","event_id":"sha256:34ec33ed4e801e90e55419d399f1e7ef7a7ac0924d9878ff990ac7b9f1cd4746"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:CA6PEBQABFV5SCG7GYJAZQ2HU7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Band Gap Opening in Bilayer Graphene-CrCl$_3$/CrBr$_3$/CrI$_3$ van der Waals Interfaces","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"Aitor Garcia-Ruiz, Alberto F. Morpurgo, Christian Moulsdale, David Soler-Delgado, Dumitru Dumcenco, Enrico Giannini, Fengrui Yao, Giulia Tenasini, Ignacio Guti\\'errez-Lezama, Kenji Watanabe, Takashi Taniguchi, Vladimir I. Fal'ko, Zhe Wang","submitted_at":"2022-07-05T17:10:17Z","abstract_excerpt":"We report experimental investigations of transport through bilayer graphene (BLG)/chromium trihalide (CrX$_3$; X=Cl, Br, I) van der Waals interfaces. In all cases, a large charge transfer from BLG to CrX$_3$ takes place (reaching densities in excess of $10^{13}$ cm$^{-2}$), and generates an electric field perpendicular to the interface that opens a band gap in BLG. We determine the gap from the activation energy of the conductivity and find excellent agreement with the latest theory accounting for the contribution of the $\\sigma$ bands to the BLG dielectric susceptibility. We further show that"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.02175","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2207.02175/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:51:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oZgys8+ZbMgIkyivZjEKReqw0fhyF0NvjACaaNCOk2eB6nEXUmh06P1uZZVwaBAg+mmqRDWrMMKDtuMovOORAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T21:55:49.487499Z"},"content_sha256":"4982be3c42fc7d00c949a179e2340e490543c122bcf8c30e895b189306dc78a2","schema_version":"1.0","event_id":"sha256:4982be3c42fc7d00c949a179e2340e490543c122bcf8c30e895b189306dc78a2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CA6PEBQABFV5SCG7GYJAZQ2HU7/bundle.json","state_url":"https://pith.science/pith/CA6PEBQABFV5SCG7GYJAZQ2HU7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CA6PEBQABFV5SCG7GYJAZQ2HU7/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-06T21:55:49Z","links":{"resolver":"https://pith.science/pith/CA6PEBQABFV5SCG7GYJAZQ2HU7","bundle":"https://pith.science/pith/CA6PEBQABFV5SCG7GYJAZQ2HU7/bundle.json","state":"https://pith.science/pith/CA6PEBQABFV5SCG7GYJAZQ2HU7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CA6PEBQABFV5SCG7GYJAZQ2HU7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:CA6PEBQABFV5SCG7GYJAZQ2HU7","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":"a03cc31253cfb8b94c100f9a4e0baaec87f48e2e5f5206c5ff08076584451594","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-07-05T17:10:17Z","title_canon_sha256":"dde9700197c856f054103d48961acdf6afdc417ff9547fb79659e87c27f740d4"},"schema_version":"1.0","source":{"id":"2207.02175","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.02175","created_at":"2026-07-05T04:51:10Z"},{"alias_kind":"arxiv_version","alias_value":"2207.02175v2","created_at":"2026-07-05T04:51:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.02175","created_at":"2026-07-05T04:51:10Z"},{"alias_kind":"pith_short_12","alias_value":"CA6PEBQABFV5","created_at":"2026-07-05T04:51:10Z"},{"alias_kind":"pith_short_16","alias_value":"CA6PEBQABFV5SCG7","created_at":"2026-07-05T04:51:10Z"},{"alias_kind":"pith_short_8","alias_value":"CA6PEBQA","created_at":"2026-07-05T04:51:10Z"}],"graph_snapshots":[{"event_id":"sha256:4982be3c42fc7d00c949a179e2340e490543c122bcf8c30e895b189306dc78a2","target":"graph","created_at":"2026-07-05T04:51:10Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2207.02175/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report experimental investigations of transport through bilayer graphene (BLG)/chromium trihalide (CrX$_3$; X=Cl, Br, I) van der Waals interfaces. In all cases, a large charge transfer from BLG to CrX$_3$ takes place (reaching densities in excess of $10^{13}$ cm$^{-2}$), and generates an electric field perpendicular to the interface that opens a band gap in BLG. We determine the gap from the activation energy of the conductivity and find excellent agreement with the latest theory accounting for the contribution of the $\\sigma$ bands to the BLG dielectric susceptibility. We further show that","authors_text":"Aitor Garcia-Ruiz, Alberto F. Morpurgo, Christian Moulsdale, David Soler-Delgado, Dumitru Dumcenco, Enrico Giannini, Fengrui Yao, Giulia Tenasini, Ignacio Guti\\'errez-Lezama, Kenji Watanabe, Takashi Taniguchi, Vladimir I. Fal'ko, Zhe Wang","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-07-05T17:10:17Z","title":"Band Gap Opening in Bilayer Graphene-CrCl$_3$/CrBr$_3$/CrI$_3$ van der Waals Interfaces"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.02175","kind":"arxiv","version":2},"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":"sha256:34ec33ed4e801e90e55419d399f1e7ef7a7ac0924d9878ff990ac7b9f1cd4746","target":"record","created_at":"2026-07-05T04:51:10Z","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":"a03cc31253cfb8b94c100f9a4e0baaec87f48e2e5f5206c5ff08076584451594","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2022-07-05T17:10:17Z","title_canon_sha256":"dde9700197c856f054103d48961acdf6afdc417ff9547fb79659e87c27f740d4"},"schema_version":"1.0","source":{"id":"2207.02175","kind":"arxiv","version":2}},"canonical_sha256":"103cf20600096bd908df36120cc347a7ffd0d30f54baf60aab047fef07a34d3b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"103cf20600096bd908df36120cc347a7ffd0d30f54baf60aab047fef07a34d3b","first_computed_at":"2026-07-05T04:51:10.623841Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:51:10.623841Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"D++dvy4zUKQ70GeVjkJAgHb99P8g3A9PHXeU4ZsWiKQNXA+6EP0zJrreF7Qgv2jC2aUDQJ5ZqigLNmTUpNCmAw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:51:10.624384Z","signed_message":"canonical_sha256_bytes"},"source_id":"2207.02175","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:34ec33ed4e801e90e55419d399f1e7ef7a7ac0924d9878ff990ac7b9f1cd4746","sha256:4982be3c42fc7d00c949a179e2340e490543c122bcf8c30e895b189306dc78a2"],"state_sha256":"b77b6e27f2667f7767464530257ce2384d39d14bf7c4a7163b08db8731ff68f3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jTulsV7lO8ee2yDmhbR941t5SCo00Vg2oDLoxBtpBYNliuCnKebv2Ya8rw+mSYRbknQuEkd26q0Iz62vwyNABA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T21:55:49.505266Z","bundle_sha256":"33a218fe7e042145a698ff820435bd7d706bb8bc10e49511b667344cd5a9f9da"}}