{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:HZHX2GVZH6E7XA2OILJ2VF3IFO","short_pith_number":"pith:HZHX2GVZ","canonical_record":{"source":{"id":"1906.01281","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-06-04T08:57:08Z","cross_cats_sorted":[],"title_canon_sha256":"c585cf32b9cd7b1ccdd4375e6bba97ec8b1ab340bd675847656762dd38f660e2","abstract_canon_sha256":"93da86070d7542fd0817a680591648df8843b216378bee3501fb0caa0700e758"},"schema_version":"1.0"},"canonical_sha256":"3e4f7d1ab93f89fb834e42d3aa97682b8611e36824430b61f5a3144d810f23d2","source":{"kind":"arxiv","id":"1906.01281","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.01281","created_at":"2026-05-17T23:44:17Z"},{"alias_kind":"arxiv_version","alias_value":"1906.01281v1","created_at":"2026-05-17T23:44:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.01281","created_at":"2026-05-17T23:44:17Z"},{"alias_kind":"pith_short_12","alias_value":"HZHX2GVZH6E7","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"HZHX2GVZH6E7XA2O","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"HZHX2GVZ","created_at":"2026-05-18T12:33:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:HZHX2GVZH6E7XA2OILJ2VF3IFO","target":"record","payload":{"canonical_record":{"source":{"id":"1906.01281","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-06-04T08:57:08Z","cross_cats_sorted":[],"title_canon_sha256":"c585cf32b9cd7b1ccdd4375e6bba97ec8b1ab340bd675847656762dd38f660e2","abstract_canon_sha256":"93da86070d7542fd0817a680591648df8843b216378bee3501fb0caa0700e758"},"schema_version":"1.0"},"canonical_sha256":"3e4f7d1ab93f89fb834e42d3aa97682b8611e36824430b61f5a3144d810f23d2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:44:17.170326Z","signature_b64":"7Jm21cu2pUdRTxYlT4Wg3IaV6YwfQ6dp4YG4jpg7PolM7AG5c7NA+1y8DKpoVqroS7xX5e4Fb84arTGtvHPHDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3e4f7d1ab93f89fb834e42d3aa97682b8611e36824430b61f5a3144d810f23d2","last_reissued_at":"2026-05-17T23:44:17.169724Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:44:17.169724Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1906.01281","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":"2026-05-17T23:44:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"omt72gttynRTyOnZk98nzeOADuRs3RjNMQmdnPqF0Ivwq3pfw2lwg5YDM2F+FPzIg0C+sSA8WBkq//8DlGDdDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-19T23:17:00.821736Z"},"content_sha256":"ecf03b0a1065f2e2ba1b040d5e12f5b9b2b4c4c954f5471f2fa07750e63d8aca","schema_version":"1.0","event_id":"sha256:ecf03b0a1065f2e2ba1b040d5e12f5b9b2b4c4c954f5471f2fa07750e63d8aca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:HZHX2GVZH6E7XA2OILJ2VF3IFO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observation of spin-phonon coupling in GdCl3 filled carbon nanotubes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"R. Erasmus, S. Bhattacharyya, S. Ncube","submitted_at":"2019-06-04T08:57:08Z","abstract_excerpt":"The enhancement of spin-phonon coupling in gadolinium filled double walled carbon nanotubes (GdCl3@DWNTs) is demonstrated through temperature dependent magnetrometry and polarized Raman Spectroscopy (PRS). Temperature dependent susceptibility measurements show that the GdCl3@DWNTs undergo a superparamagnetic phase transion at temperatures below 100 K with a blocking temperature at approximately 47 K. From the temperature dependent PRS, it is observed that a distinct phonon hardening occurs for the G-band modes at temperatures close to the onset of the superparamagentic phase. This is in contra"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.01281","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":"2026-05-17T23:44:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VeioNAkMhNu6PD7u/sgdEL81TOCI2lob4GeoHJpxxdIWr8ePkMcEdUUAzVh75eqHdNyweLbwmW1HYHiB/QH4BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-19T23:17:00.822070Z"},"content_sha256":"66f4f3da0dcfbf9172c25b71bd819d1a14451c2b8c39ec3bcb349702ef1a4b5d","schema_version":"1.0","event_id":"sha256:66f4f3da0dcfbf9172c25b71bd819d1a14451c2b8c39ec3bcb349702ef1a4b5d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HZHX2GVZH6E7XA2OILJ2VF3IFO/bundle.json","state_url":"https://pith.science/pith/HZHX2GVZH6E7XA2OILJ2VF3IFO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HZHX2GVZH6E7XA2OILJ2VF3IFO/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":"2026-06-19T23:17:00Z","links":{"resolver":"https://pith.science/pith/HZHX2GVZH6E7XA2OILJ2VF3IFO","bundle":"https://pith.science/pith/HZHX2GVZH6E7XA2OILJ2VF3IFO/bundle.json","state":"https://pith.science/pith/HZHX2GVZH6E7XA2OILJ2VF3IFO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HZHX2GVZH6E7XA2OILJ2VF3IFO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:HZHX2GVZH6E7XA2OILJ2VF3IFO","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":"93da86070d7542fd0817a680591648df8843b216378bee3501fb0caa0700e758","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-06-04T08:57:08Z","title_canon_sha256":"c585cf32b9cd7b1ccdd4375e6bba97ec8b1ab340bd675847656762dd38f660e2"},"schema_version":"1.0","source":{"id":"1906.01281","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.01281","created_at":"2026-05-17T23:44:17Z"},{"alias_kind":"arxiv_version","alias_value":"1906.01281v1","created_at":"2026-05-17T23:44:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.01281","created_at":"2026-05-17T23:44:17Z"},{"alias_kind":"pith_short_12","alias_value":"HZHX2GVZH6E7","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"HZHX2GVZH6E7XA2O","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"HZHX2GVZ","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:66f4f3da0dcfbf9172c25b71bd819d1a14451c2b8c39ec3bcb349702ef1a4b5d","target":"graph","created_at":"2026-05-17T23:44:17Z","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":"The enhancement of spin-phonon coupling in gadolinium filled double walled carbon nanotubes (GdCl3@DWNTs) is demonstrated through temperature dependent magnetrometry and polarized Raman Spectroscopy (PRS). Temperature dependent susceptibility measurements show that the GdCl3@DWNTs undergo a superparamagnetic phase transion at temperatures below 100 K with a blocking temperature at approximately 47 K. From the temperature dependent PRS, it is observed that a distinct phonon hardening occurs for the G-band modes at temperatures close to the onset of the superparamagentic phase. This is in contra","authors_text":"R. Erasmus, S. Bhattacharyya, S. Ncube","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-06-04T08:57:08Z","title":"Observation of spin-phonon coupling in GdCl3 filled carbon nanotubes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.01281","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:ecf03b0a1065f2e2ba1b040d5e12f5b9b2b4c4c954f5471f2fa07750e63d8aca","target":"record","created_at":"2026-05-17T23:44:17Z","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":"93da86070d7542fd0817a680591648df8843b216378bee3501fb0caa0700e758","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-06-04T08:57:08Z","title_canon_sha256":"c585cf32b9cd7b1ccdd4375e6bba97ec8b1ab340bd675847656762dd38f660e2"},"schema_version":"1.0","source":{"id":"1906.01281","kind":"arxiv","version":1}},"canonical_sha256":"3e4f7d1ab93f89fb834e42d3aa97682b8611e36824430b61f5a3144d810f23d2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3e4f7d1ab93f89fb834e42d3aa97682b8611e36824430b61f5a3144d810f23d2","first_computed_at":"2026-05-17T23:44:17.169724Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:44:17.169724Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7Jm21cu2pUdRTxYlT4Wg3IaV6YwfQ6dp4YG4jpg7PolM7AG5c7NA+1y8DKpoVqroS7xX5e4Fb84arTGtvHPHDQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:44:17.170326Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.01281","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ecf03b0a1065f2e2ba1b040d5e12f5b9b2b4c4c954f5471f2fa07750e63d8aca","sha256:66f4f3da0dcfbf9172c25b71bd819d1a14451c2b8c39ec3bcb349702ef1a4b5d"],"state_sha256":"147722876b46c3eecc7d1ca35e645f5f7dd5fee4dd96f1daaf76fcacfd6439fe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p9G1xlAY7ha/8GcPVcASot10oEhhNv2KKMO2CK5WYRcbfM2ksw9t/wA7BJOuX3B4ZZ3eufglP2oMWCGIMTCGDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-19T23:17:00.823953Z","bundle_sha256":"1859e75f59bce24136ae34166b69f43e22d8c14153c2823a949e84e62d844dfd"}}