{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:LVQJJ3GM2JO4VH567OYSY5MP2F","short_pith_number":"pith:LVQJJ3GM","canonical_record":{"source":{"id":"1604.01900","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-07T07:33:08Z","cross_cats_sorted":[],"title_canon_sha256":"260a5ee14706d3c198b95d727539cea3b39415a1d03c33cf8d217ac9a85e0b42","abstract_canon_sha256":"496dc1423d26ef77db6b562539a56a8008b2d3918dbbbbc69058ccefbdaec939"},"schema_version":"1.0"},"canonical_sha256":"5d6094ecccd25dca9fbefbb12c758fd17e14382afa462cf9f2564fa0d58054b3","source":{"kind":"arxiv","id":"1604.01900","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.01900","created_at":"2026-05-18T01:10:49Z"},{"alias_kind":"arxiv_version","alias_value":"1604.01900v1","created_at":"2026-05-18T01:10:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.01900","created_at":"2026-05-18T01:10:49Z"},{"alias_kind":"pith_short_12","alias_value":"LVQJJ3GM2JO4","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_16","alias_value":"LVQJJ3GM2JO4VH56","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_8","alias_value":"LVQJJ3GM","created_at":"2026-05-18T12:30:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:LVQJJ3GM2JO4VH567OYSY5MP2F","target":"record","payload":{"canonical_record":{"source":{"id":"1604.01900","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-07T07:33:08Z","cross_cats_sorted":[],"title_canon_sha256":"260a5ee14706d3c198b95d727539cea3b39415a1d03c33cf8d217ac9a85e0b42","abstract_canon_sha256":"496dc1423d26ef77db6b562539a56a8008b2d3918dbbbbc69058ccefbdaec939"},"schema_version":"1.0"},"canonical_sha256":"5d6094ecccd25dca9fbefbb12c758fd17e14382afa462cf9f2564fa0d58054b3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:49.971617Z","signature_b64":"//WfOYryD5EejQWhIyN/pbYJf+S3b9sH7LTAgUHR8Lcrq5zWl4TDa3/JhFO9UESLng4Ko39nbqKCrWuNmDVfCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5d6094ecccd25dca9fbefbb12c758fd17e14382afa462cf9f2564fa0d58054b3","last_reissued_at":"2026-05-18T01:10:49.971067Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:49.971067Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.01900","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":"2026-05-18T01:10:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WJanCRP/KAllqynq2v1WkhzJz45y2BeVQM1ZMTmXcFDJqUd1wo7QP/3lb6hg/1HSg9CJ5s4QmSfafgiG1mlLDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T18:20:11.173162Z"},"content_sha256":"6928d8d215a79f76a5d4f31adc43963010526b4af60731664eabd9be738d9d34","schema_version":"1.0","event_id":"sha256:6928d8d215a79f76a5d4f31adc43963010526b4af60731664eabd9be738d9d34"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:LVQJJ3GM2JO4VH567OYSY5MP2F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"AlN interlayer to improve the epitaxial growth of SmN on GaN (0001)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Benjamin Damilano, Franck Natali, Jean Massies, Mohamed Al Khalfioui, St\\'ephane V\\'ezian","submitted_at":"2016-04-07T07:33:08Z","abstract_excerpt":"An in situ study of the epitaxial growth of SmN thin films on Ga-polar GaN (0001)templates by molecular beam epitaxy is reported. Using X-ray photoelectron spectroscopy we found that Ga segregates at the surface during the first stages of growth. We showed that the problem related to Ga surface segregation can be simply suppressed by growing a few monolayers of AlN before starting the SmN growth. This results in a significant improvement of the crystallinity of SmN thin films assessed by X-ray diffraction."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.01900","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":"2026-05-18T01:10:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5Yxu/NDomIiwP48HbOTmIZtIaGVGvYfppJXspG4Zekj25V4Qs3jTB56UuM3q2aKc3BjjMVzNNW62CmHM0DOcCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T18:20:11.173546Z"},"content_sha256":"bafea95d01fc64af8357867dafaadcaac841e8a6584423b317e04cf388733ffd","schema_version":"1.0","event_id":"sha256:bafea95d01fc64af8357867dafaadcaac841e8a6584423b317e04cf388733ffd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LVQJJ3GM2JO4VH567OYSY5MP2F/bundle.json","state_url":"https://pith.science/pith/LVQJJ3GM2JO4VH567OYSY5MP2F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LVQJJ3GM2JO4VH567OYSY5MP2F/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":"2026-06-03T18:20:11Z","links":{"resolver":"https://pith.science/pith/LVQJJ3GM2JO4VH567OYSY5MP2F","bundle":"https://pith.science/pith/LVQJJ3GM2JO4VH567OYSY5MP2F/bundle.json","state":"https://pith.science/pith/LVQJJ3GM2JO4VH567OYSY5MP2F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LVQJJ3GM2JO4VH567OYSY5MP2F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:LVQJJ3GM2JO4VH567OYSY5MP2F","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":"496dc1423d26ef77db6b562539a56a8008b2d3918dbbbbc69058ccefbdaec939","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-07T07:33:08Z","title_canon_sha256":"260a5ee14706d3c198b95d727539cea3b39415a1d03c33cf8d217ac9a85e0b42"},"schema_version":"1.0","source":{"id":"1604.01900","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.01900","created_at":"2026-05-18T01:10:49Z"},{"alias_kind":"arxiv_version","alias_value":"1604.01900v1","created_at":"2026-05-18T01:10:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.01900","created_at":"2026-05-18T01:10:49Z"},{"alias_kind":"pith_short_12","alias_value":"LVQJJ3GM2JO4","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_16","alias_value":"LVQJJ3GM2JO4VH56","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_8","alias_value":"LVQJJ3GM","created_at":"2026-05-18T12:30:29Z"}],"graph_snapshots":[{"event_id":"sha256:bafea95d01fc64af8357867dafaadcaac841e8a6584423b317e04cf388733ffd","target":"graph","created_at":"2026-05-18T01:10:49Z","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":"An in situ study of the epitaxial growth of SmN thin films on Ga-polar GaN (0001)templates by molecular beam epitaxy is reported. Using X-ray photoelectron spectroscopy we found that Ga segregates at the surface during the first stages of growth. We showed that the problem related to Ga surface segregation can be simply suppressed by growing a few monolayers of AlN before starting the SmN growth. This results in a significant improvement of the crystallinity of SmN thin films assessed by X-ray diffraction.","authors_text":"Benjamin Damilano, Franck Natali, Jean Massies, Mohamed Al Khalfioui, St\\'ephane V\\'ezian","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-07T07:33:08Z","title":"AlN interlayer to improve the epitaxial growth of SmN on GaN (0001)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.01900","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":"sha256:6928d8d215a79f76a5d4f31adc43963010526b4af60731664eabd9be738d9d34","target":"record","created_at":"2026-05-18T01:10:49Z","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":"496dc1423d26ef77db6b562539a56a8008b2d3918dbbbbc69058ccefbdaec939","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-04-07T07:33:08Z","title_canon_sha256":"260a5ee14706d3c198b95d727539cea3b39415a1d03c33cf8d217ac9a85e0b42"},"schema_version":"1.0","source":{"id":"1604.01900","kind":"arxiv","version":1}},"canonical_sha256":"5d6094ecccd25dca9fbefbb12c758fd17e14382afa462cf9f2564fa0d58054b3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5d6094ecccd25dca9fbefbb12c758fd17e14382afa462cf9f2564fa0d58054b3","first_computed_at":"2026-05-18T01:10:49.971067Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:49.971067Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"//WfOYryD5EejQWhIyN/pbYJf+S3b9sH7LTAgUHR8Lcrq5zWl4TDa3/JhFO9UESLng4Ko39nbqKCrWuNmDVfCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:49.971617Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.01900","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6928d8d215a79f76a5d4f31adc43963010526b4af60731664eabd9be738d9d34","sha256:bafea95d01fc64af8357867dafaadcaac841e8a6584423b317e04cf388733ffd"],"state_sha256":"42d672a73276e6f69e13a9b074c25788cc18feef9c7beefac9c69ebb1462e9ec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6ytp91JwhESZ0bIqw7+NeyM9lqC9X/BVdg4U5lPVXw+YOPRXwbbx2wsP4romxASqy/pUkwlHPpiMCulAq7JsDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T18:20:11.176359Z","bundle_sha256":"5b78d8977db26193b220b2750cc13367a4678a0067707dfa60292963a2e67102"}}