{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:B3AX6VBTT7IKHQLS5AZYIVANYO","short_pith_number":"pith:B3AX6VBT","canonical_record":{"source":{"id":"2111.08926","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-11-17T06:37:21Z","cross_cats_sorted":[],"title_canon_sha256":"2d2e0113263c301f46913d6429fcb55f7dfd0f78fc51284f8304e08772ec3816","abstract_canon_sha256":"23ea290900ef852a612e13f40d7f2fd392717a17ddaccfd41826d6a4d0d739cf"},"schema_version":"1.0"},"canonical_sha256":"0ec17f54339fd0a3c172e83384540dc3a4077de28f5e5ff0e19ad790d8f16e28","source":{"kind":"arxiv","id":"2111.08926","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.08926","created_at":"2026-07-05T05:08:50Z"},{"alias_kind":"arxiv_version","alias_value":"2111.08926v4","created_at":"2026-07-05T05:08:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.08926","created_at":"2026-07-05T05:08:50Z"},{"alias_kind":"pith_short_12","alias_value":"B3AX6VBTT7IK","created_at":"2026-07-05T05:08:50Z"},{"alias_kind":"pith_short_16","alias_value":"B3AX6VBTT7IKHQLS","created_at":"2026-07-05T05:08:50Z"},{"alias_kind":"pith_short_8","alias_value":"B3AX6VBT","created_at":"2026-07-05T05:08:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:B3AX6VBTT7IKHQLS5AZYIVANYO","target":"record","payload":{"canonical_record":{"source":{"id":"2111.08926","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-11-17T06:37:21Z","cross_cats_sorted":[],"title_canon_sha256":"2d2e0113263c301f46913d6429fcb55f7dfd0f78fc51284f8304e08772ec3816","abstract_canon_sha256":"23ea290900ef852a612e13f40d7f2fd392717a17ddaccfd41826d6a4d0d739cf"},"schema_version":"1.0"},"canonical_sha256":"0ec17f54339fd0a3c172e83384540dc3a4077de28f5e5ff0e19ad790d8f16e28","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:08:50.389536Z","signature_b64":"bAUgMyJWljJxOff2t0POxX2HWxzk1vSdqAkaaXivnXKNPe7EWkMcHx++UGYfrff+IQomvMCxAP/TIgsC5+ZKBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0ec17f54339fd0a3c172e83384540dc3a4077de28f5e5ff0e19ad790d8f16e28","last_reissued_at":"2026-07-05T05:08:50.389074Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:08:50.389074Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2111.08926","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:08:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DnEN4g6vvnBQRFQco+NU61pAqWmLSlFLzLaiXfDzJgPqm3EgfqQtPRspjZImH1tktRnHia6fDC4Tm9jUG7eeAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T22:42:34.335615Z"},"content_sha256":"6b1d29ab6356bd84087d94187ad64234c11b2f48fdc78795ffe81dfd3db246ac","schema_version":"1.0","event_id":"sha256:6b1d29ab6356bd84087d94187ad64234c11b2f48fdc78795ffe81dfd3db246ac"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:B3AX6VBTT7IKHQLS5AZYIVANYO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Vertical structure of Sb-intercalated quasifreestanding graphene on SiC(0001)","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Christian Kumpf, Fran\\c{c}ois C. Bocquet, F. Stefan Tautz, Mark Hutter, Philip Sch\\\"adlich, Serguei Soubatch, Susanne Wolff, Thomas Seyller, Tien-Lin Lee, You-Ron Lin","submitted_at":"2021-11-17T06:37:21Z","abstract_excerpt":"Using the normal incidence x-ray standing wave technique as well as low energy electron microscopy we have investigated the structure of quasi-freestanding monolayer graphene (QFMLG) obtained by intercalation of antimony under the $\\left(6\\sqrt{3}\\times6\\sqrt{3}\\right)R30^\\circ$ reconstructed graphitized 6H-SiC(0001) surface, also known as zeroth-layer graphene. We found that Sb intercalation decouples the QFMLG well from the substrate. The distance from the QFMLG to the Sb layer almost equals the expected van der Waals bonding distance of C and Sb. The Sb intercalation layer itself is mono-at"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.08926","kind":"arxiv","version":4},"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/2111.08926/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":"2026-07-05T05:08:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OkajdfHz/mlE/jWvCfUdD9lT5vc9XGdG80CzeE3YBisx6MHtQ2SQPQLWXAV1cGS32x6/+nvC4SSiinHeRHpVAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T22:42:34.336561Z"},"content_sha256":"0384673c235578649e782089da71834674df7e692a0ab1f0468a72db7c098822","schema_version":"1.0","event_id":"sha256:0384673c235578649e782089da71834674df7e692a0ab1f0468a72db7c098822"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/B3AX6VBTT7IKHQLS5AZYIVANYO/bundle.json","state_url":"https://pith.science/pith/B3AX6VBTT7IKHQLS5AZYIVANYO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/B3AX6VBTT7IKHQLS5AZYIVANYO/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":"2026-08-22T22:42:34Z","links":{"resolver":"https://pith.science/pith/B3AX6VBTT7IKHQLS5AZYIVANYO","bundle":"https://pith.science/pith/B3AX6VBTT7IKHQLS5AZYIVANYO/bundle.json","state":"https://pith.science/pith/B3AX6VBTT7IKHQLS5AZYIVANYO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/B3AX6VBTT7IKHQLS5AZYIVANYO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:B3AX6VBTT7IKHQLS5AZYIVANYO","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":"23ea290900ef852a612e13f40d7f2fd392717a17ddaccfd41826d6a4d0d739cf","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-11-17T06:37:21Z","title_canon_sha256":"2d2e0113263c301f46913d6429fcb55f7dfd0f78fc51284f8304e08772ec3816"},"schema_version":"1.0","source":{"id":"2111.08926","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.08926","created_at":"2026-07-05T05:08:50Z"},{"alias_kind":"arxiv_version","alias_value":"2111.08926v4","created_at":"2026-07-05T05:08:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.08926","created_at":"2026-07-05T05:08:50Z"},{"alias_kind":"pith_short_12","alias_value":"B3AX6VBTT7IK","created_at":"2026-07-05T05:08:50Z"},{"alias_kind":"pith_short_16","alias_value":"B3AX6VBTT7IKHQLS","created_at":"2026-07-05T05:08:50Z"},{"alias_kind":"pith_short_8","alias_value":"B3AX6VBT","created_at":"2026-07-05T05:08:50Z"}],"graph_snapshots":[{"event_id":"sha256:0384673c235578649e782089da71834674df7e692a0ab1f0468a72db7c098822","target":"graph","created_at":"2026-07-05T05:08:50Z","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/2111.08926/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Using the normal incidence x-ray standing wave technique as well as low energy electron microscopy we have investigated the structure of quasi-freestanding monolayer graphene (QFMLG) obtained by intercalation of antimony under the $\\left(6\\sqrt{3}\\times6\\sqrt{3}\\right)R30^\\circ$ reconstructed graphitized 6H-SiC(0001) surface, also known as zeroth-layer graphene. We found that Sb intercalation decouples the QFMLG well from the substrate. The distance from the QFMLG to the Sb layer almost equals the expected van der Waals bonding distance of C and Sb. The Sb intercalation layer itself is mono-at","authors_text":"Christian Kumpf, Fran\\c{c}ois C. Bocquet, F. Stefan Tautz, Mark Hutter, Philip Sch\\\"adlich, Serguei Soubatch, Susanne Wolff, Thomas Seyller, Tien-Lin Lee, You-Ron Lin","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-11-17T06:37:21Z","title":"Vertical structure of Sb-intercalated quasifreestanding graphene on SiC(0001)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.08926","kind":"arxiv","version":4},"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":"sha256:6b1d29ab6356bd84087d94187ad64234c11b2f48fdc78795ffe81dfd3db246ac","target":"record","created_at":"2026-07-05T05:08:50Z","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":"23ea290900ef852a612e13f40d7f2fd392717a17ddaccfd41826d6a4d0d739cf","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-11-17T06:37:21Z","title_canon_sha256":"2d2e0113263c301f46913d6429fcb55f7dfd0f78fc51284f8304e08772ec3816"},"schema_version":"1.0","source":{"id":"2111.08926","kind":"arxiv","version":4}},"canonical_sha256":"0ec17f54339fd0a3c172e83384540dc3a4077de28f5e5ff0e19ad790d8f16e28","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0ec17f54339fd0a3c172e83384540dc3a4077de28f5e5ff0e19ad790d8f16e28","first_computed_at":"2026-07-05T05:08:50.389074Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:08:50.389074Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bAUgMyJWljJxOff2t0POxX2HWxzk1vSdqAkaaXivnXKNPe7EWkMcHx++UGYfrff+IQomvMCxAP/TIgsC5+ZKBA==","signature_status":"signed_v1","signed_at":"2026-07-05T05:08:50.389536Z","signed_message":"canonical_sha256_bytes"},"source_id":"2111.08926","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6b1d29ab6356bd84087d94187ad64234c11b2f48fdc78795ffe81dfd3db246ac","sha256:0384673c235578649e782089da71834674df7e692a0ab1f0468a72db7c098822"],"state_sha256":"8a5bbea7c1d38e9ec25379581ab1812f6ca3f51a9e5cd1a830d0cf641b06ae38"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M2E/J1nTRSMXm8N86dYMj7YJMU0RUCZzJzP9MOPNSP74Oiuf9/kbwsgj5SjiQfYKTYjEXuDu2Rt8SmmBKmncCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T22:42:34.343368Z","bundle_sha256":"5003d77f19679be332ebc1a8a74de6d25dbf88375a96f8fd5cff44c3bc6d7dea"}}