{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:DD2ML32L64W2YW7KUWJGDI5RVJ","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":"6b5b52171f118d06c7c2f85a75c60f7860e1475cc5b05eb6c7dc6671b89cafad","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-11-04T20:09:46Z","title_canon_sha256":"ad0241e9b73ab3423490343e4a272febdc9c8da0eb08bfac88fc97d26c9b5970"},"schema_version":"1.0","source":{"id":"1911.01472","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1911.01472","created_at":"2026-07-05T00:43:40Z"},{"alias_kind":"arxiv_version","alias_value":"1911.01472v1","created_at":"2026-07-05T00:43:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1911.01472","created_at":"2026-07-05T00:43:40Z"},{"alias_kind":"pith_short_12","alias_value":"DD2ML32L64W2","created_at":"2026-07-05T00:43:40Z"},{"alias_kind":"pith_short_16","alias_value":"DD2ML32L64W2YW7K","created_at":"2026-07-05T00:43:40Z"},{"alias_kind":"pith_short_8","alias_value":"DD2ML32L","created_at":"2026-07-05T00:43:40Z"}],"graph_snapshots":[{"event_id":"sha256:32247e160a27302b94eaacbdd1cee118f6b9985458f555e1382d3d97be729212","target":"graph","created_at":"2026-07-05T00:43:40Z","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/1911.01472/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We have examined the formation mechanisms of GaN quantum dots (QDs) via annealing of Ga droplets in a nitrogen flux. We consider the temperature and substrate dependence of the size distributions of droplets and QDs, as well as the relative roles of Ga/N diffusivity and GaN nucleation rates on QD formation. We report on two competing mechanisms mediated by Ga surface diffusion, namely QD formation at or away from pre-existing Ga droplets. We discuss the relative roles of nucleation and coarsening dominant growth, as well as the polytype selection, on various substrates. The new insights provid","authors_text":"A. Sundar, C. Reese, E. Rizzi, H. Lu, L. Qi, R. S. Goldman, S. Jeon, Y. Fan, Y. Zhuo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-11-04T20:09:46Z","title":"Mechanisms of GaN quantum dot formation during nitridation of Ga droplets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1911.01472","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":"sha256:4e2a394475457632c9d8d5e030eb3096c90c2f107cfbfe0831454688759baf11","target":"record","created_at":"2026-07-05T00:43:40Z","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":"6b5b52171f118d06c7c2f85a75c60f7860e1475cc5b05eb6c7dc6671b89cafad","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-11-04T20:09:46Z","title_canon_sha256":"ad0241e9b73ab3423490343e4a272febdc9c8da0eb08bfac88fc97d26c9b5970"},"schema_version":"1.0","source":{"id":"1911.01472","kind":"arxiv","version":1}},"canonical_sha256":"18f4c5ef4bf72dac5beaa59261a3b1aa6478fe9bdb238a01adff47e23a06e8b5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"18f4c5ef4bf72dac5beaa59261a3b1aa6478fe9bdb238a01adff47e23a06e8b5","first_computed_at":"2026-07-05T00:43:40.292695Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:43:40.292695Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bQX8IEsyLaM3Q8dTHvqjLevx4UOW7qN1ZXFGLko/c3zWD88gxbqhe/nbexVPziGt2CBYXZ1WkONNA1Pt0VIGDg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:43:40.293131Z","signed_message":"canonical_sha256_bytes"},"source_id":"1911.01472","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e2a394475457632c9d8d5e030eb3096c90c2f107cfbfe0831454688759baf11","sha256:32247e160a27302b94eaacbdd1cee118f6b9985458f555e1382d3d97be729212"],"state_sha256":"ae0715ef6aad4f24b9e9ad97cd428366b25362ae88d4926a80742ddcdb0436dc"}