{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:MCLALXDHBUEP6UKOEF7FEPHVN5","short_pith_number":"pith:MCLALXDH","canonical_record":{"source":{"id":"2503.21382","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2025-03-27T11:23:48Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"ca337d3f385bd4789f846510c3aebc45678eebd396d8fe154d4355c9943d20d2","abstract_canon_sha256":"37b31973c310d6a926fd73ef5baea6a8cde332f1b5846095781205e1d1ce4749"},"schema_version":"1.0"},"canonical_sha256":"609605dc670d08ff514e217e523cf56f4916e6d992cbd0893d329a7018732f33","source":{"kind":"arxiv","id":"2503.21382","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.21382","created_at":"2026-05-21T01:05:05Z"},{"alias_kind":"arxiv_version","alias_value":"2503.21382v1","created_at":"2026-05-21T01:05:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.21382","created_at":"2026-05-21T01:05:05Z"},{"alias_kind":"pith_short_12","alias_value":"MCLALXDHBUEP","created_at":"2026-05-21T01:05:05Z"},{"alias_kind":"pith_short_16","alias_value":"MCLALXDHBUEP6UKO","created_at":"2026-05-21T01:05:05Z"},{"alias_kind":"pith_short_8","alias_value":"MCLALXDH","created_at":"2026-05-21T01:05:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:MCLALXDHBUEP6UKOEF7FEPHVN5","target":"record","payload":{"canonical_record":{"source":{"id":"2503.21382","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2025-03-27T11:23:48Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"ca337d3f385bd4789f846510c3aebc45678eebd396d8fe154d4355c9943d20d2","abstract_canon_sha256":"37b31973c310d6a926fd73ef5baea6a8cde332f1b5846095781205e1d1ce4749"},"schema_version":"1.0"},"canonical_sha256":"609605dc670d08ff514e217e523cf56f4916e6d992cbd0893d329a7018732f33","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-21T01:05:05.169681Z","signature_b64":"9B/C9w2vh0r1rsb+JcCDHl3u/5q7lOwfWeuYlRyRFBcq4YISRcg6KNaSOcngqFbLE/D+9+ifsSXxVcFHaueXDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"609605dc670d08ff514e217e523cf56f4916e6d992cbd0893d329a7018732f33","last_reissued_at":"2026-05-21T01:05:05.168693Z","signature_status":"signed_v1","first_computed_at":"2026-05-21T01:05:05.168693Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2503.21382","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":"2026-05-21T01:05:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aL0myDJlYZW3bh/Yu/CUuCgSwaH50AyybzoPv+szS1B2sN5pl6+i6KOGAsiZbLIcwXI/Vy8uxW1RFPhmrbqzBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T00:42:13.202073Z"},"content_sha256":"f93f857a48661bd74a0cb2464a047a85d92fb5c6cb1040a04fd850348bcb4468","schema_version":"1.0","event_id":"sha256:f93f857a48661bd74a0cb2464a047a85d92fb5c6cb1040a04fd850348bcb4468"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:MCLALXDHBUEP6UKOEF7FEPHVN5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Limited Diffusion of Silicon in GaN: A DFT Study Supported by Experimental Evidence","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Akira Kusaba, Karol Kawka, Karol Pozyczka, Krzysztof Golyga, Michal Bockowski, Michal Fijalkowski, Pawel Kempisty","submitted_at":"2025-03-27T11:23:48Z","abstract_excerpt":"Silicon (Si) is the primary donor dopant in gallium nitride (GaN), introduced through epitaxial growth or ion implantation. However, precise control over Si diffusion remains a critical challenge for high-performance device applications. This study investigates Si diffusion mechanisms in bulk GaN using first-principles density functional theory (DFT) calculations, supported by ultra-high-pressure annealing (UHPA) experiments. Vacancy-mediated diffusion pathways were analyzed using the SIESTA code, with minimum energy paths (MEPs) and activation barriers determined via the nudged elastic band ("},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.21382","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2503.21382/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":"2026-05-21T01:05:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ErA2UtY0cDmMnMKPjwaaURBjUTSC6JEdR4nPxMxr7CRfiKUCZrXTRhCpXpCvkHOAOkwZtV+unrvjMEsCKWDvDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T00:42:13.202865Z"},"content_sha256":"3937bb0248d1d8d4da9995d723f3ce5af1b3e8bb9990221dd6962f4632ecb575","schema_version":"1.0","event_id":"sha256:3937bb0248d1d8d4da9995d723f3ce5af1b3e8bb9990221dd6962f4632ecb575"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MCLALXDHBUEP6UKOEF7FEPHVN5/bundle.json","state_url":"https://pith.science/pith/MCLALXDHBUEP6UKOEF7FEPHVN5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MCLALXDHBUEP6UKOEF7FEPHVN5/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":"2026-06-11T00:42:13Z","links":{"resolver":"https://pith.science/pith/MCLALXDHBUEP6UKOEF7FEPHVN5","bundle":"https://pith.science/pith/MCLALXDHBUEP6UKOEF7FEPHVN5/bundle.json","state":"https://pith.science/pith/MCLALXDHBUEP6UKOEF7FEPHVN5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MCLALXDHBUEP6UKOEF7FEPHVN5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:MCLALXDHBUEP6UKOEF7FEPHVN5","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":"37b31973c310d6a926fd73ef5baea6a8cde332f1b5846095781205e1d1ce4749","cross_cats_sorted":["physics.comp-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2025-03-27T11:23:48Z","title_canon_sha256":"ca337d3f385bd4789f846510c3aebc45678eebd396d8fe154d4355c9943d20d2"},"schema_version":"1.0","source":{"id":"2503.21382","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.21382","created_at":"2026-05-21T01:05:05Z"},{"alias_kind":"arxiv_version","alias_value":"2503.21382v1","created_at":"2026-05-21T01:05:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.21382","created_at":"2026-05-21T01:05:05Z"},{"alias_kind":"pith_short_12","alias_value":"MCLALXDHBUEP","created_at":"2026-05-21T01:05:05Z"},{"alias_kind":"pith_short_16","alias_value":"MCLALXDHBUEP6UKO","created_at":"2026-05-21T01:05:05Z"},{"alias_kind":"pith_short_8","alias_value":"MCLALXDH","created_at":"2026-05-21T01:05:05Z"}],"graph_snapshots":[{"event_id":"sha256:3937bb0248d1d8d4da9995d723f3ce5af1b3e8bb9990221dd6962f4632ecb575","target":"graph","created_at":"2026-05-21T01:05:05Z","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/2503.21382/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Silicon (Si) is the primary donor dopant in gallium nitride (GaN), introduced through epitaxial growth or ion implantation. However, precise control over Si diffusion remains a critical challenge for high-performance device applications. This study investigates Si diffusion mechanisms in bulk GaN using first-principles density functional theory (DFT) calculations, supported by ultra-high-pressure annealing (UHPA) experiments. Vacancy-mediated diffusion pathways were analyzed using the SIESTA code, with minimum energy paths (MEPs) and activation barriers determined via the nudged elastic band (","authors_text":"Akira Kusaba, Karol Kawka, Karol Pozyczka, Krzysztof Golyga, Michal Bockowski, Michal Fijalkowski, Pawel Kempisty","cross_cats":["physics.comp-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2025-03-27T11:23:48Z","title":"Limited Diffusion of Silicon in GaN: A DFT Study Supported by Experimental Evidence"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.21382","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:f93f857a48661bd74a0cb2464a047a85d92fb5c6cb1040a04fd850348bcb4468","target":"record","created_at":"2026-05-21T01:05:05Z","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":"37b31973c310d6a926fd73ef5baea6a8cde332f1b5846095781205e1d1ce4749","cross_cats_sorted":["physics.comp-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2025-03-27T11:23:48Z","title_canon_sha256":"ca337d3f385bd4789f846510c3aebc45678eebd396d8fe154d4355c9943d20d2"},"schema_version":"1.0","source":{"id":"2503.21382","kind":"arxiv","version":1}},"canonical_sha256":"609605dc670d08ff514e217e523cf56f4916e6d992cbd0893d329a7018732f33","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"609605dc670d08ff514e217e523cf56f4916e6d992cbd0893d329a7018732f33","first_computed_at":"2026-05-21T01:05:05.168693Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-21T01:05:05.168693Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9B/C9w2vh0r1rsb+JcCDHl3u/5q7lOwfWeuYlRyRFBcq4YISRcg6KNaSOcngqFbLE/D+9+ifsSXxVcFHaueXDg==","signature_status":"signed_v1","signed_at":"2026-05-21T01:05:05.169681Z","signed_message":"canonical_sha256_bytes"},"source_id":"2503.21382","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f93f857a48661bd74a0cb2464a047a85d92fb5c6cb1040a04fd850348bcb4468","sha256:3937bb0248d1d8d4da9995d723f3ce5af1b3e8bb9990221dd6962f4632ecb575"],"state_sha256":"de99e11d9df22007d7215da1c524803359f9fc16369bb8235c84c6981c4e1d1e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eacD/8NMjEluVlRDB85079eB1pn74tkj1DwaCkCiJj1LVXkiStqpFYuDGWUmUV6PeQm3F/95RUdsgRgutGmRCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T00:42:13.207057Z","bundle_sha256":"6418fcc6532c9cd3bf366c079107046ce8922d4fd363fa333a66f89e951c6471"}}