{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:NVHQRANVM7QXIPFYVBYPZ6GIME","short_pith_number":"pith:NVHQRANV","canonical_record":{"source":{"id":"1003.0298","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-03-01T10:17:36Z","cross_cats_sorted":[],"title_canon_sha256":"7fa56612397ec440e3c148c3a3e878e8b5d162a424d537c99c9e3040a2379f84","abstract_canon_sha256":"9339f275ee387e2a1a9e5404c690a17d7ca000364ff327f64c7585b6ba02302f"},"schema_version":"1.0"},"canonical_sha256":"6d4f0881b567e1743cb8a870fcf8c8612c2671e65c63363d3a3d3e123b88b3fe","source":{"kind":"arxiv","id":"1003.0298","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1003.0298","created_at":"2026-05-18T02:08:48Z"},{"alias_kind":"arxiv_version","alias_value":"1003.0298v1","created_at":"2026-05-18T02:08:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1003.0298","created_at":"2026-05-18T02:08:48Z"},{"alias_kind":"pith_short_12","alias_value":"NVHQRANVM7QX","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"NVHQRANVM7QXIPFY","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"NVHQRANV","created_at":"2026-05-18T12:26:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:NVHQRANVM7QXIPFYVBYPZ6GIME","target":"record","payload":{"canonical_record":{"source":{"id":"1003.0298","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-03-01T10:17:36Z","cross_cats_sorted":[],"title_canon_sha256":"7fa56612397ec440e3c148c3a3e878e8b5d162a424d537c99c9e3040a2379f84","abstract_canon_sha256":"9339f275ee387e2a1a9e5404c690a17d7ca000364ff327f64c7585b6ba02302f"},"schema_version":"1.0"},"canonical_sha256":"6d4f0881b567e1743cb8a870fcf8c8612c2671e65c63363d3a3d3e123b88b3fe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:08:48.188012Z","signature_b64":"bzTsufL/+zhMFnZTQrO+aRR0rZ/BvTT6fSXfxKKR7NpDANhP0+Y8Y1f2CmrFSXWLuAMCAdrzIot8ZQuszpMXCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6d4f0881b567e1743cb8a870fcf8c8612c2671e65c63363d3a3d3e123b88b3fe","last_reissued_at":"2026-05-18T02:08:48.187390Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:08:48.187390Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1003.0298","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":"2026-05-18T02:08:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bOcZDPwUAk8zlyN10wTFpH9tZW7w3EFTqo1lr3nTLM2KIfFWcwWqS9oDp+3gPVzyg1S4tjRUznQBut1Xd+AGCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T04:51:12.359351Z"},"content_sha256":"67c61687bd21c0417acf489c58affcb071507e2ee118741cc5f7517603682cb7","schema_version":"1.0","event_id":"sha256:67c61687bd21c0417acf489c58affcb071507e2ee118741cc5f7517603682cb7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:NVHQRANVM7QXIPFYVBYPZ6GIME","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Acceptor and donor impurities in GaN nanocrystals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"A. K. Bhattacharjee, C. Echeverr\\'ia-Arrondo, J. P\\'erez-Conde","submitted_at":"2010-03-01T10:17:36Z","abstract_excerpt":"We investigate acceptor and donor states in GaN nanocrystals doped with a single substitutional impurity. Quantum dots (QD's) of zinc-blende structure and spherical shape are considered with the radius ranging from 4.5 to 67.7 A. The size-dependent energy spectra are calculated within the sp3d5s* tight-binding model, which yields a good agreement with the confinement-induced blue shifts observed in undoped QD's. The computed binding energy is strongly enhanced with respect to the experimental bulk value when the dopant is placed at the center of the smallest QD's. It decreases with increasing "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.0298","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":"2026-05-18T02:08:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oCRMHsq4yhrSQGelOtoBt4ax0qV7YNZuBfODNVRJjQtNCcau2cFInA/UUPofORVq/hpCNce+ai7RFbhTuGgXDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T04:51:12.359946Z"},"content_sha256":"8ed7c6191612a942f6e09f102aec516b698d3ec2a21adaf48e54b2858fafa7a3","schema_version":"1.0","event_id":"sha256:8ed7c6191612a942f6e09f102aec516b698d3ec2a21adaf48e54b2858fafa7a3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NVHQRANVM7QXIPFYVBYPZ6GIME/bundle.json","state_url":"https://pith.science/pith/NVHQRANVM7QXIPFYVBYPZ6GIME/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NVHQRANVM7QXIPFYVBYPZ6GIME/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":"2026-06-05T04:51:12Z","links":{"resolver":"https://pith.science/pith/NVHQRANVM7QXIPFYVBYPZ6GIME","bundle":"https://pith.science/pith/NVHQRANVM7QXIPFYVBYPZ6GIME/bundle.json","state":"https://pith.science/pith/NVHQRANVM7QXIPFYVBYPZ6GIME/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NVHQRANVM7QXIPFYVBYPZ6GIME/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:NVHQRANVM7QXIPFYVBYPZ6GIME","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":"9339f275ee387e2a1a9e5404c690a17d7ca000364ff327f64c7585b6ba02302f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-03-01T10:17:36Z","title_canon_sha256":"7fa56612397ec440e3c148c3a3e878e8b5d162a424d537c99c9e3040a2379f84"},"schema_version":"1.0","source":{"id":"1003.0298","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1003.0298","created_at":"2026-05-18T02:08:48Z"},{"alias_kind":"arxiv_version","alias_value":"1003.0298v1","created_at":"2026-05-18T02:08:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1003.0298","created_at":"2026-05-18T02:08:48Z"},{"alias_kind":"pith_short_12","alias_value":"NVHQRANVM7QX","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_16","alias_value":"NVHQRANVM7QXIPFY","created_at":"2026-05-18T12:26:10Z"},{"alias_kind":"pith_short_8","alias_value":"NVHQRANV","created_at":"2026-05-18T12:26:10Z"}],"graph_snapshots":[{"event_id":"sha256:8ed7c6191612a942f6e09f102aec516b698d3ec2a21adaf48e54b2858fafa7a3","target":"graph","created_at":"2026-05-18T02:08:48Z","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":"We investigate acceptor and donor states in GaN nanocrystals doped with a single substitutional impurity. Quantum dots (QD's) of zinc-blende structure and spherical shape are considered with the radius ranging from 4.5 to 67.7 A. The size-dependent energy spectra are calculated within the sp3d5s* tight-binding model, which yields a good agreement with the confinement-induced blue shifts observed in undoped QD's. The computed binding energy is strongly enhanced with respect to the experimental bulk value when the dopant is placed at the center of the smallest QD's. It decreases with increasing ","authors_text":"A. K. Bhattacharjee, C. Echeverr\\'ia-Arrondo, J. P\\'erez-Conde","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-03-01T10:17:36Z","title":"Acceptor and donor impurities in GaN nanocrystals"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.0298","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":"sha256:67c61687bd21c0417acf489c58affcb071507e2ee118741cc5f7517603682cb7","target":"record","created_at":"2026-05-18T02:08:48Z","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":"9339f275ee387e2a1a9e5404c690a17d7ca000364ff327f64c7585b6ba02302f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-03-01T10:17:36Z","title_canon_sha256":"7fa56612397ec440e3c148c3a3e878e8b5d162a424d537c99c9e3040a2379f84"},"schema_version":"1.0","source":{"id":"1003.0298","kind":"arxiv","version":1}},"canonical_sha256":"6d4f0881b567e1743cb8a870fcf8c8612c2671e65c63363d3a3d3e123b88b3fe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6d4f0881b567e1743cb8a870fcf8c8612c2671e65c63363d3a3d3e123b88b3fe","first_computed_at":"2026-05-18T02:08:48.187390Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:08:48.187390Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bzTsufL/+zhMFnZTQrO+aRR0rZ/BvTT6fSXfxKKR7NpDANhP0+Y8Y1f2CmrFSXWLuAMCAdrzIot8ZQuszpMXCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:08:48.188012Z","signed_message":"canonical_sha256_bytes"},"source_id":"1003.0298","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:67c61687bd21c0417acf489c58affcb071507e2ee118741cc5f7517603682cb7","sha256:8ed7c6191612a942f6e09f102aec516b698d3ec2a21adaf48e54b2858fafa7a3"],"state_sha256":"76e02183a03ee3d3cd1e82871052f055906b0ca1aab7642f935b89d5d7e75c2b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"To4wd6GHRePIiQImL700cdA4d0Ko5w2yS8//9xj7OoxqDpOeX5wg2u/64VBlpv9os6CLxIYUSbSN9+RqVL1xAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T04:51:12.363240Z","bundle_sha256":"3f998cc73a9e4f0dd4fca96b7e31300c1b529c73139871c40b6aaf4c7cd82942"}}