{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:FWIQQCM6DHOYXQ63DGSDPR4BVC","short_pith_number":"pith:FWIQQCM6","canonical_record":{"source":{"id":"1212.6807","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-12-31T02:27:06Z","cross_cats_sorted":[],"title_canon_sha256":"e71520c4ad5a5c6df3062a1f3f7658e2a248cfca8c67aaf4baaddff6e8f47cd8","abstract_canon_sha256":"b3464b8a46731038681f2eb2d72ac68d9453599c8fe6b485ed194c6fa9da8a4e"},"schema_version":"1.0"},"canonical_sha256":"2d9108099e19dd8bc3db19a437c781a8889c6dd864182ebcc6bc41cbef681268","source":{"kind":"arxiv","id":"1212.6807","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.6807","created_at":"2026-05-18T03:32:47Z"},{"alias_kind":"arxiv_version","alias_value":"1212.6807v1","created_at":"2026-05-18T03:32:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.6807","created_at":"2026-05-18T03:32:47Z"},{"alias_kind":"pith_short_12","alias_value":"FWIQQCM6DHOY","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_16","alias_value":"FWIQQCM6DHOYXQ63","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_8","alias_value":"FWIQQCM6","created_at":"2026-05-18T12:27:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:FWIQQCM6DHOYXQ63DGSDPR4BVC","target":"record","payload":{"canonical_record":{"source":{"id":"1212.6807","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-12-31T02:27:06Z","cross_cats_sorted":[],"title_canon_sha256":"e71520c4ad5a5c6df3062a1f3f7658e2a248cfca8c67aaf4baaddff6e8f47cd8","abstract_canon_sha256":"b3464b8a46731038681f2eb2d72ac68d9453599c8fe6b485ed194c6fa9da8a4e"},"schema_version":"1.0"},"canonical_sha256":"2d9108099e19dd8bc3db19a437c781a8889c6dd864182ebcc6bc41cbef681268","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:32:47.107014Z","signature_b64":"DcFSJS9V4FB/0m9HpqaQ5WNZlB2NIj3eA+0CGsgd5S/JrOBJ7c8icf5cBsFCsE0MSDOCz+gbhq7iXwrwGcOPCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2d9108099e19dd8bc3db19a437c781a8889c6dd864182ebcc6bc41cbef681268","last_reissued_at":"2026-05-18T03:32:47.106218Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:32:47.106218Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1212.6807","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:32:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"txo9aGhxOrCHvgSbIkruf6yfuyxt+AyN3g3uTYPxWReVQSdMVF5Fhm86kryqPrFFPxA2+5KhG+f+e9aXKgDhDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T20:19:20.924036Z"},"content_sha256":"ee7edc2d7c5526fdf617e39af53ca1838b7b52a0974828726e51819761dbd7ce","schema_version":"1.0","event_id":"sha256:ee7edc2d7c5526fdf617e39af53ca1838b7b52a0974828726e51819761dbd7ce"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:FWIQQCM6DHOYXQ63DGSDPR4BVC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Growth and band alignment of Bi2Se3 topological insulator on H-terminated Si(111) van der Waals surface","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Gaoyun Wang, Handong Li, Hui Li, Jiang Wu, Lei Gao, Zhihua Zhou, Zhiming Wang","submitted_at":"2012-12-31T02:27:06Z","abstract_excerpt":"The van der Waals epitaxy of single crystalline Bi2Se3 film was achieved on hydrogen passivated Si(111) (H:Si) substrate by physical vapor deposition. Valence band structures of Bi2Se3/H:Si heterojunction were investigated by X-ray Photoemission Spectroscopy and Ultraviolet Photoemission Spectroscopy. The measured Schottky barrier height at the Bi2Se3-H:Si interface was 0.31 eV. The findings pave the way for economically preparing heterojunctions and multilayers of layered compound families of topological insulators."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.6807","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:32:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"novewqWSqFGSK1XJpYu383u8v8/33DVBz7avwFCzKB69+YUGitB9Tn+4RpW2KwlSh41WouMresXPaoZxMGxiCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T20:19:20.924398Z"},"content_sha256":"165db65f1d14b48c8a2c69543d4cd1835365a472f7f443b673fe9cea4bb3504a","schema_version":"1.0","event_id":"sha256:165db65f1d14b48c8a2c69543d4cd1835365a472f7f443b673fe9cea4bb3504a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FWIQQCM6DHOYXQ63DGSDPR4BVC/bundle.json","state_url":"https://pith.science/pith/FWIQQCM6DHOYXQ63DGSDPR4BVC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FWIQQCM6DHOYXQ63DGSDPR4BVC/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":"2026-06-04T20:19:20Z","links":{"resolver":"https://pith.science/pith/FWIQQCM6DHOYXQ63DGSDPR4BVC","bundle":"https://pith.science/pith/FWIQQCM6DHOYXQ63DGSDPR4BVC/bundle.json","state":"https://pith.science/pith/FWIQQCM6DHOYXQ63DGSDPR4BVC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FWIQQCM6DHOYXQ63DGSDPR4BVC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:FWIQQCM6DHOYXQ63DGSDPR4BVC","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":"b3464b8a46731038681f2eb2d72ac68d9453599c8fe6b485ed194c6fa9da8a4e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-12-31T02:27:06Z","title_canon_sha256":"e71520c4ad5a5c6df3062a1f3f7658e2a248cfca8c67aaf4baaddff6e8f47cd8"},"schema_version":"1.0","source":{"id":"1212.6807","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.6807","created_at":"2026-05-18T03:32:47Z"},{"alias_kind":"arxiv_version","alias_value":"1212.6807v1","created_at":"2026-05-18T03:32:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.6807","created_at":"2026-05-18T03:32:47Z"},{"alias_kind":"pith_short_12","alias_value":"FWIQQCM6DHOY","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_16","alias_value":"FWIQQCM6DHOYXQ63","created_at":"2026-05-18T12:27:06Z"},{"alias_kind":"pith_short_8","alias_value":"FWIQQCM6","created_at":"2026-05-18T12:27:06Z"}],"graph_snapshots":[{"event_id":"sha256:165db65f1d14b48c8a2c69543d4cd1835365a472f7f443b673fe9cea4bb3504a","target":"graph","created_at":"2026-05-18T03:32:47Z","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"},"paper":{"abstract_excerpt":"The van der Waals epitaxy of single crystalline Bi2Se3 film was achieved on hydrogen passivated Si(111) (H:Si) substrate by physical vapor deposition. Valence band structures of Bi2Se3/H:Si heterojunction were investigated by X-ray Photoemission Spectroscopy and Ultraviolet Photoemission Spectroscopy. The measured Schottky barrier height at the Bi2Se3-H:Si interface was 0.31 eV. The findings pave the way for economically preparing heterojunctions and multilayers of layered compound families of topological insulators.","authors_text":"Gaoyun Wang, Handong Li, Hui Li, Jiang Wu, Lei Gao, Zhihua Zhou, Zhiming Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-12-31T02:27:06Z","title":"Growth and band alignment of Bi2Se3 topological insulator on H-terminated Si(111) van der Waals surface"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.6807","kind":"arxiv","version":1},"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:ee7edc2d7c5526fdf617e39af53ca1838b7b52a0974828726e51819761dbd7ce","target":"record","created_at":"2026-05-18T03:32:47Z","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":"b3464b8a46731038681f2eb2d72ac68d9453599c8fe6b485ed194c6fa9da8a4e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-12-31T02:27:06Z","title_canon_sha256":"e71520c4ad5a5c6df3062a1f3f7658e2a248cfca8c67aaf4baaddff6e8f47cd8"},"schema_version":"1.0","source":{"id":"1212.6807","kind":"arxiv","version":1}},"canonical_sha256":"2d9108099e19dd8bc3db19a437c781a8889c6dd864182ebcc6bc41cbef681268","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2d9108099e19dd8bc3db19a437c781a8889c6dd864182ebcc6bc41cbef681268","first_computed_at":"2026-05-18T03:32:47.106218Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:32:47.106218Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DcFSJS9V4FB/0m9HpqaQ5WNZlB2NIj3eA+0CGsgd5S/JrOBJ7c8icf5cBsFCsE0MSDOCz+gbhq7iXwrwGcOPCw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:32:47.107014Z","signed_message":"canonical_sha256_bytes"},"source_id":"1212.6807","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ee7edc2d7c5526fdf617e39af53ca1838b7b52a0974828726e51819761dbd7ce","sha256:165db65f1d14b48c8a2c69543d4cd1835365a472f7f443b673fe9cea4bb3504a"],"state_sha256":"c9373898a61f146ec1af4b32aea597704706fdaebc532907c95c4d946e28b0c4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TuZG5TgdBhmSo3+S5Jwkr55e1BXZRB4vxvkmc4xnK5N6YQ2PsCq02kggTRANYcfaRhVYNO2gCCmQ6RXQ3hI8Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T20:19:20.926463Z","bundle_sha256":"e97b962c84f5694230f074f3806951448f05db7e14a835e57d12b3fca7609c2f"}}