{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:RFJF7H5Q6H25XGCF6PN6AGVSQF","short_pith_number":"pith:RFJF7H5Q","canonical_record":{"source":{"id":"1607.04036","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2016-07-14T08:58:09Z","cross_cats_sorted":[],"title_canon_sha256":"171f2e19b517da4deefa2e3715e41f38b66b0edc430cd5842813cc55eb481126","abstract_canon_sha256":"5c8c1490d6dd69226693e9578fe84ecd38cd889d74481d180e991c7f4caf220d"},"schema_version":"1.0"},"canonical_sha256":"89525f9fb0f1f5db9845f3dbe01ab28176d6ab90b8f69b9441e3c1f7e617bf36","source":{"kind":"arxiv","id":"1607.04036","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.04036","created_at":"2026-05-18T01:01:23Z"},{"alias_kind":"arxiv_version","alias_value":"1607.04036v2","created_at":"2026-05-18T01:01:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.04036","created_at":"2026-05-18T01:01:23Z"},{"alias_kind":"pith_short_12","alias_value":"RFJF7H5Q6H25","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"RFJF7H5Q6H25XGCF","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"RFJF7H5Q","created_at":"2026-05-18T12:30:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:RFJF7H5Q6H25XGCF6PN6AGVSQF","target":"record","payload":{"canonical_record":{"source":{"id":"1607.04036","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2016-07-14T08:58:09Z","cross_cats_sorted":[],"title_canon_sha256":"171f2e19b517da4deefa2e3715e41f38b66b0edc430cd5842813cc55eb481126","abstract_canon_sha256":"5c8c1490d6dd69226693e9578fe84ecd38cd889d74481d180e991c7f4caf220d"},"schema_version":"1.0"},"canonical_sha256":"89525f9fb0f1f5db9845f3dbe01ab28176d6ab90b8f69b9441e3c1f7e617bf36","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:01:23.144079Z","signature_b64":"a/0MdKqRo5/+N0Izt73hE9ELjgof7aDmGUUJU66qo5Tw30Ytm6vBG4rNTDvhY6j5qeC/t+h/VcyoManH4/gwDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"89525f9fb0f1f5db9845f3dbe01ab28176d6ab90b8f69b9441e3c1f7e617bf36","last_reissued_at":"2026-05-18T01:01:23.143669Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:01:23.143669Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1607.04036","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:01:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gSLWOZ8u4BUm24wfVQntlwHEgPtOWVuCGfWBHCw8jSVC3JiS2uxt//7bVgOWv/zwGxdMC/kS7A4Om0s9ZL2lCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T16:58:39.369243Z"},"content_sha256":"c571e0a48f5d9021be69a1fe58d529835cbcdab4ac5037d56c1b3eb460a1fbf1","schema_version":"1.0","event_id":"sha256:c571e0a48f5d9021be69a1fe58d529835cbcdab4ac5037d56c1b3eb460a1fbf1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:RFJF7H5Q6H25XGCF6PN6AGVSQF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nature of excitons bound to inversion domain boundaries: Origin of the 3.45-eV luminescence lines in spontaneously formed GaN nanowires on Si(111)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Achim Trampert, Carsten Pf\\\"uller, Christian Hauswald, Holger T. Grahn, Johannes K. Zettler, Lutz Geelhaar, Oliver Brandt, Pierre Corfdir, P{\\i}nar Do\\u{g}an, Sergio Fern\\'andez-Garrido, Timur Flissikowski, Xiang Kong","submitted_at":"2016-07-14T08:58:09Z","abstract_excerpt":"We investigate the 3.45-eV luminescence band of spontaneously formed GaN nanowires on Si(111) by photoluminescence and cathodoluminescence spectroscopy. This band is found to be particularly prominent for samples synthesized at comparatively low temperatures. At the same time, these samples exhibit a peculiar morphology, namely, isolated long nanowires are interspersed within a dense matrix of short ones. Cathodoluminescence intensity maps reveal the 3.45-eV band to originate primarily from the long nanowires. Transmission electron microscopy shows that these long nanowires are either Ga polar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.04036","kind":"arxiv","version":2},"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":"2026-05-18T01:01:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GTlt3a/iskiVdTMTrUBQMq1UOhUyHETqdLI0r5tZB7O9s/nH+qc3ul4uK6n3XcP/aAnVKG8gfgdj/l2hpaItBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T16:58:39.369675Z"},"content_sha256":"b1f5f4381d55410387b3e62327535626cad403805f29160d6351408c2dfef620","schema_version":"1.0","event_id":"sha256:b1f5f4381d55410387b3e62327535626cad403805f29160d6351408c2dfef620"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RFJF7H5Q6H25XGCF6PN6AGVSQF/bundle.json","state_url":"https://pith.science/pith/RFJF7H5Q6H25XGCF6PN6AGVSQF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RFJF7H5Q6H25XGCF6PN6AGVSQF/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":"2026-05-26T16:58:39Z","links":{"resolver":"https://pith.science/pith/RFJF7H5Q6H25XGCF6PN6AGVSQF","bundle":"https://pith.science/pith/RFJF7H5Q6H25XGCF6PN6AGVSQF/bundle.json","state":"https://pith.science/pith/RFJF7H5Q6H25XGCF6PN6AGVSQF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RFJF7H5Q6H25XGCF6PN6AGVSQF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:RFJF7H5Q6H25XGCF6PN6AGVSQF","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":"5c8c1490d6dd69226693e9578fe84ecd38cd889d74481d180e991c7f4caf220d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2016-07-14T08:58:09Z","title_canon_sha256":"171f2e19b517da4deefa2e3715e41f38b66b0edc430cd5842813cc55eb481126"},"schema_version":"1.0","source":{"id":"1607.04036","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.04036","created_at":"2026-05-18T01:01:23Z"},{"alias_kind":"arxiv_version","alias_value":"1607.04036v2","created_at":"2026-05-18T01:01:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.04036","created_at":"2026-05-18T01:01:23Z"},{"alias_kind":"pith_short_12","alias_value":"RFJF7H5Q6H25","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"RFJF7H5Q6H25XGCF","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"RFJF7H5Q","created_at":"2026-05-18T12:30:41Z"}],"graph_snapshots":[{"event_id":"sha256:b1f5f4381d55410387b3e62327535626cad403805f29160d6351408c2dfef620","target":"graph","created_at":"2026-05-18T01:01:23Z","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 the 3.45-eV luminescence band of spontaneously formed GaN nanowires on Si(111) by photoluminescence and cathodoluminescence spectroscopy. This band is found to be particularly prominent for samples synthesized at comparatively low temperatures. At the same time, these samples exhibit a peculiar morphology, namely, isolated long nanowires are interspersed within a dense matrix of short ones. Cathodoluminescence intensity maps reveal the 3.45-eV band to originate primarily from the long nanowires. Transmission electron microscopy shows that these long nanowires are either Ga polar","authors_text":"Achim Trampert, Carsten Pf\\\"uller, Christian Hauswald, Holger T. Grahn, Johannes K. Zettler, Lutz Geelhaar, Oliver Brandt, Pierre Corfdir, P{\\i}nar Do\\u{g}an, Sergio Fern\\'andez-Garrido, Timur Flissikowski, Xiang Kong","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2016-07-14T08:58:09Z","title":"Nature of excitons bound to inversion domain boundaries: Origin of the 3.45-eV luminescence lines in spontaneously formed GaN nanowires on Si(111)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.04036","kind":"arxiv","version":2},"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:c571e0a48f5d9021be69a1fe58d529835cbcdab4ac5037d56c1b3eb460a1fbf1","target":"record","created_at":"2026-05-18T01:01:23Z","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":"5c8c1490d6dd69226693e9578fe84ecd38cd889d74481d180e991c7f4caf220d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2016-07-14T08:58:09Z","title_canon_sha256":"171f2e19b517da4deefa2e3715e41f38b66b0edc430cd5842813cc55eb481126"},"schema_version":"1.0","source":{"id":"1607.04036","kind":"arxiv","version":2}},"canonical_sha256":"89525f9fb0f1f5db9845f3dbe01ab28176d6ab90b8f69b9441e3c1f7e617bf36","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"89525f9fb0f1f5db9845f3dbe01ab28176d6ab90b8f69b9441e3c1f7e617bf36","first_computed_at":"2026-05-18T01:01:23.143669Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:01:23.143669Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a/0MdKqRo5/+N0Izt73hE9ELjgof7aDmGUUJU66qo5Tw30Ytm6vBG4rNTDvhY6j5qeC/t+h/VcyoManH4/gwDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:01:23.144079Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.04036","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c571e0a48f5d9021be69a1fe58d529835cbcdab4ac5037d56c1b3eb460a1fbf1","sha256:b1f5f4381d55410387b3e62327535626cad403805f29160d6351408c2dfef620"],"state_sha256":"c18e0db800c6de6f8f0b2ab27311735682d5d45a60d37645e33dbda89ea946c7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"awgfTIDNnpgS3/kfCq8vllJilrc9RZnuIH2P1ZQ1tKPQFvppcGJpvmyn/iS/3IXA4gRLb9WvC90wb1XEkKSeDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T16:58:39.372722Z","bundle_sha256":"d2960e6dde167a1974fb5e877dbf0ec23e6e3784be7895beb13e6227cfd6f4c9"}}