{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:PFMZFOMZ76ISUKQXTAELDRBNWI","short_pith_number":"pith:PFMZFOMZ","canonical_record":{"source":{"id":"1511.04663","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-11-15T06:13:23Z","cross_cats_sorted":[],"title_canon_sha256":"575cc8c28320ea226ff265964310098c8637f322275d5aae05e32eb908c2dfe7","abstract_canon_sha256":"d4ea4bcfa63c714aea6c196e239908113e24b498a996a6dc7321e45a65b1b9fb"},"schema_version":"1.0"},"canonical_sha256":"795992b999ff912a2a179808b1c42db238181f788a338fdea748314e8f19e894","source":{"kind":"arxiv","id":"1511.04663","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.04663","created_at":"2026-05-18T01:10:14Z"},{"alias_kind":"arxiv_version","alias_value":"1511.04663v2","created_at":"2026-05-18T01:10:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.04663","created_at":"2026-05-18T01:10:14Z"},{"alias_kind":"pith_short_12","alias_value":"PFMZFOMZ76IS","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PFMZFOMZ76ISUKQX","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PFMZFOMZ","created_at":"2026-05-18T12:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:PFMZFOMZ76ISUKQXTAELDRBNWI","target":"record","payload":{"canonical_record":{"source":{"id":"1511.04663","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-11-15T06:13:23Z","cross_cats_sorted":[],"title_canon_sha256":"575cc8c28320ea226ff265964310098c8637f322275d5aae05e32eb908c2dfe7","abstract_canon_sha256":"d4ea4bcfa63c714aea6c196e239908113e24b498a996a6dc7321e45a65b1b9fb"},"schema_version":"1.0"},"canonical_sha256":"795992b999ff912a2a179808b1c42db238181f788a338fdea748314e8f19e894","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:14.873864Z","signature_b64":"/a9O2q7h37eOA8x25/Q/monuTiV29/m1aVzfv8Ebijgd5vsJ/wfLRBSelI8Dl6c7HgBFx9PlyuFBQUNyqbKVCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"795992b999ff912a2a179808b1c42db238181f788a338fdea748314e8f19e894","last_reissued_at":"2026-05-18T01:10:14.873452Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:14.873452Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1511.04663","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":"2026-05-18T01:10:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"otURnen59IggNHWVhLjcvpgpiawpEpC8sytEPLf1cRomx12OjviqIkBcwAbk2XYkoHs67xH+32OUYXOhq1DPBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T08:51:30.647886Z"},"content_sha256":"a5174ab387f12fe396ccbb3317e7f3a47be1a4490c0b0aa6f2ce40cc1107b364","schema_version":"1.0","event_id":"sha256:a5174ab387f12fe396ccbb3317e7f3a47be1a4490c0b0aa6f2ce40cc1107b364"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:PFMZFOMZ76ISUKQXTAELDRBNWI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"All-optical dc nanotesla magnetometry using silicon vacancy fine structure in isotopically purified silicon carbide","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. N. Anisimov, A. Sperlich, A. V. Poshakinskiy, D. O. Tolmachev, D. Simin, E. N. Mokhov, G. V. Astakhov, M. Trupke, P. G. Baranov, R. A. Babunts, S. A. Tarasenko, V. A. Soltamov, V. Dyakonov","submitted_at":"2015-11-15T06:13:23Z","abstract_excerpt":"We uncover the fine structure of a silicon vacancy in isotopically purified silicon carbide (4H-$^{28}$SiC) and find extra terms in the spin Hamiltonian, originated from the trigonal pyramidal symmetry of this spin-3/2 color center. These terms give rise to additional spin transitions, which are otherwise forbidden, and lead to a level anticrossing in an external magnetic field. We observe a sharp variation of the photoluminescence intensity in the vicinity of this level anticrossing, which can be used for a purely all-optical sensing of the magnetic field. We achieve dc magnetic field sensiti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.04663","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":"2026-05-18T01:10:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qCwn3h0rn0yvgoi49/NtNIsXA5ZrHjbVXgsF6I3Ix0mxN/TbgWAfKH/Pbc06sjgR4tUWxyd8FV0nkdPqpglgCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T08:51:30.648644Z"},"content_sha256":"adbfa51a741d16d1358b02da3d642042099128ab473d067cdc143300fb0dc869","schema_version":"1.0","event_id":"sha256:adbfa51a741d16d1358b02da3d642042099128ab473d067cdc143300fb0dc869"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PFMZFOMZ76ISUKQXTAELDRBNWI/bundle.json","state_url":"https://pith.science/pith/PFMZFOMZ76ISUKQXTAELDRBNWI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PFMZFOMZ76ISUKQXTAELDRBNWI/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":"2026-05-27T08:51:30Z","links":{"resolver":"https://pith.science/pith/PFMZFOMZ76ISUKQXTAELDRBNWI","bundle":"https://pith.science/pith/PFMZFOMZ76ISUKQXTAELDRBNWI/bundle.json","state":"https://pith.science/pith/PFMZFOMZ76ISUKQXTAELDRBNWI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PFMZFOMZ76ISUKQXTAELDRBNWI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:PFMZFOMZ76ISUKQXTAELDRBNWI","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":"d4ea4bcfa63c714aea6c196e239908113e24b498a996a6dc7321e45a65b1b9fb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-11-15T06:13:23Z","title_canon_sha256":"575cc8c28320ea226ff265964310098c8637f322275d5aae05e32eb908c2dfe7"},"schema_version":"1.0","source":{"id":"1511.04663","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.04663","created_at":"2026-05-18T01:10:14Z"},{"alias_kind":"arxiv_version","alias_value":"1511.04663v2","created_at":"2026-05-18T01:10:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.04663","created_at":"2026-05-18T01:10:14Z"},{"alias_kind":"pith_short_12","alias_value":"PFMZFOMZ76IS","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PFMZFOMZ76ISUKQX","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PFMZFOMZ","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:adbfa51a741d16d1358b02da3d642042099128ab473d067cdc143300fb0dc869","target":"graph","created_at":"2026-05-18T01:10:14Z","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 uncover the fine structure of a silicon vacancy in isotopically purified silicon carbide (4H-$^{28}$SiC) and find extra terms in the spin Hamiltonian, originated from the trigonal pyramidal symmetry of this spin-3/2 color center. These terms give rise to additional spin transitions, which are otherwise forbidden, and lead to a level anticrossing in an external magnetic field. We observe a sharp variation of the photoluminescence intensity in the vicinity of this level anticrossing, which can be used for a purely all-optical sensing of the magnetic field. We achieve dc magnetic field sensiti","authors_text":"A. N. Anisimov, A. Sperlich, A. V. Poshakinskiy, D. O. Tolmachev, D. Simin, E. N. Mokhov, G. V. Astakhov, M. Trupke, P. G. Baranov, R. A. Babunts, S. A. Tarasenko, V. A. Soltamov, V. Dyakonov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-11-15T06:13:23Z","title":"All-optical dc nanotesla magnetometry using silicon vacancy fine structure in isotopically purified silicon carbide"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.04663","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:a5174ab387f12fe396ccbb3317e7f3a47be1a4490c0b0aa6f2ce40cc1107b364","target":"record","created_at":"2026-05-18T01:10:14Z","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":"d4ea4bcfa63c714aea6c196e239908113e24b498a996a6dc7321e45a65b1b9fb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-11-15T06:13:23Z","title_canon_sha256":"575cc8c28320ea226ff265964310098c8637f322275d5aae05e32eb908c2dfe7"},"schema_version":"1.0","source":{"id":"1511.04663","kind":"arxiv","version":2}},"canonical_sha256":"795992b999ff912a2a179808b1c42db238181f788a338fdea748314e8f19e894","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"795992b999ff912a2a179808b1c42db238181f788a338fdea748314e8f19e894","first_computed_at":"2026-05-18T01:10:14.873452Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:14.873452Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/a9O2q7h37eOA8x25/Q/monuTiV29/m1aVzfv8Ebijgd5vsJ/wfLRBSelI8Dl6c7HgBFx9PlyuFBQUNyqbKVCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:14.873864Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.04663","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a5174ab387f12fe396ccbb3317e7f3a47be1a4490c0b0aa6f2ce40cc1107b364","sha256:adbfa51a741d16d1358b02da3d642042099128ab473d067cdc143300fb0dc869"],"state_sha256":"2fe70aa66c40f058db7232f1b2c10dcfade1169b83272ccc189593aeea7fc36b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sWhaHw1olwMxGRMZrj/JL9IWQyQ0Gx6LolsFkaNMsV+hxe5EgBO+nqMHfaVtt4aTXrpPmrin8ah+RwFY1J3qAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T08:51:30.652485Z","bundle_sha256":"7eb78617e782cf9e3e7d9a95fb4ddb9d83775ca72ad74b6d16125b1c674931fd"}}