{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:K2XS5LYLOJQRJDMNPDP6EUG4MB","short_pith_number":"pith:K2XS5LYL","canonical_record":{"source":{"id":"1710.09547","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2017-10-26T05:27:38Z","cross_cats_sorted":[],"title_canon_sha256":"18801914f32f4cc8c9fc31ab5d1e47afec3cd59d23866da2d182afbf6976b23e","abstract_canon_sha256":"0f786be6710832ad2bd3f64dc9e2e6cdc7b92df0507bb5d14fdc1bb2cd0a5337"},"schema_version":"1.0"},"canonical_sha256":"56af2eaf0b7261148d8d78dfe250dc60405948cd57454dbe09d29ae9d41f2205","source":{"kind":"arxiv","id":"1710.09547","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.09547","created_at":"2026-05-18T00:27:12Z"},{"alias_kind":"arxiv_version","alias_value":"1710.09547v1","created_at":"2026-05-18T00:27:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.09547","created_at":"2026-05-18T00:27:12Z"},{"alias_kind":"pith_short_12","alias_value":"K2XS5LYLOJQR","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"K2XS5LYLOJQRJDMN","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"K2XS5LYL","created_at":"2026-05-18T12:31:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:K2XS5LYLOJQRJDMNPDP6EUG4MB","target":"record","payload":{"canonical_record":{"source":{"id":"1710.09547","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2017-10-26T05:27:38Z","cross_cats_sorted":[],"title_canon_sha256":"18801914f32f4cc8c9fc31ab5d1e47afec3cd59d23866da2d182afbf6976b23e","abstract_canon_sha256":"0f786be6710832ad2bd3f64dc9e2e6cdc7b92df0507bb5d14fdc1bb2cd0a5337"},"schema_version":"1.0"},"canonical_sha256":"56af2eaf0b7261148d8d78dfe250dc60405948cd57454dbe09d29ae9d41f2205","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:27:12.555154Z","signature_b64":"NOZGZaWHI7pvbGllKBfuZF4xtjnJMAiokhr8VkcC59FA8r3TjtrQlreyKmTsPLmI2GGolIBFMqFD8v2j8tIZDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"56af2eaf0b7261148d8d78dfe250dc60405948cd57454dbe09d29ae9d41f2205","last_reissued_at":"2026-05-18T00:27:12.554734Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:27:12.554734Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.09547","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":"2026-05-18T00:27:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ArobzbgPHU1gSV4IDs2Hdu8ymSJAZ8fGO9TbyZpZVSG6WiPlGBWfn+rTkR5pqp+z4sH4Pv9lUzLGm1KYZ7hcBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T15:04:01.726236Z"},"content_sha256":"b65a11dd682fbfe7cc72d9c80f542548092c87abf183e10a932db89f8347b584","schema_version":"1.0","event_id":"sha256:b65a11dd682fbfe7cc72d9c80f542548092c87abf183e10a932db89f8347b584"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:K2XS5LYLOJQRJDMNPDP6EUG4MB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Local nematic susceptibility in stressed BaFe$_2$As$_2$ from NMR electric field gradient measurements","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"B. T. Bush, E. I. Timmons, M. A. Tanatar, M. Lawson, N. J. Curro, P. C. Canfield, R. M. Fernandes, R. Prozorov, R. Sarkar, S. L. Bud'ko, T. Kissikov, W. E. Pickett, W. F. Goh","submitted_at":"2017-10-26T05:27:38Z","abstract_excerpt":"The electric field gradient (EFG) tensor at the $^{75}$As site couples to the orbital occupations of the As p-orbitals and is a sensitive probe of local nematicity in BaFe$_2$As$_2$. We use nuclear magnetic resonance to measure the nuclear quadrupolar splittings and find that the EFG asymmetry responds linearly to the presence of a strain field in the paramagnetic phase. We extract the nematic susceptibility from the slope of this linear response as a function of temperature and find that it diverges near the structural transition in agreement with other measures of the bulk nematic susceptibi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.09547","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":"2026-05-18T00:27:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0PEAUlPTk7f2Xqvsp9GImrfkUMEKzfav7sSAQZ/ugmK11Yftnkdq3/mWthhAgfrVFW9F/3H1fDxx5M18EOofBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T15:04:01.726614Z"},"content_sha256":"4bb02a51e9c17e7f3988415e9899760d0e6945a32e762c54dde4163519229d55","schema_version":"1.0","event_id":"sha256:4bb02a51e9c17e7f3988415e9899760d0e6945a32e762c54dde4163519229d55"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/K2XS5LYLOJQRJDMNPDP6EUG4MB/bundle.json","state_url":"https://pith.science/pith/K2XS5LYLOJQRJDMNPDP6EUG4MB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/K2XS5LYLOJQRJDMNPDP6EUG4MB/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":"2026-05-29T15:04:01Z","links":{"resolver":"https://pith.science/pith/K2XS5LYLOJQRJDMNPDP6EUG4MB","bundle":"https://pith.science/pith/K2XS5LYLOJQRJDMNPDP6EUG4MB/bundle.json","state":"https://pith.science/pith/K2XS5LYLOJQRJDMNPDP6EUG4MB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/K2XS5LYLOJQRJDMNPDP6EUG4MB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:K2XS5LYLOJQRJDMNPDP6EUG4MB","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":"0f786be6710832ad2bd3f64dc9e2e6cdc7b92df0507bb5d14fdc1bb2cd0a5337","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2017-10-26T05:27:38Z","title_canon_sha256":"18801914f32f4cc8c9fc31ab5d1e47afec3cd59d23866da2d182afbf6976b23e"},"schema_version":"1.0","source":{"id":"1710.09547","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.09547","created_at":"2026-05-18T00:27:12Z"},{"alias_kind":"arxiv_version","alias_value":"1710.09547v1","created_at":"2026-05-18T00:27:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.09547","created_at":"2026-05-18T00:27:12Z"},{"alias_kind":"pith_short_12","alias_value":"K2XS5LYLOJQR","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_16","alias_value":"K2XS5LYLOJQRJDMN","created_at":"2026-05-18T12:31:24Z"},{"alias_kind":"pith_short_8","alias_value":"K2XS5LYL","created_at":"2026-05-18T12:31:24Z"}],"graph_snapshots":[{"event_id":"sha256:4bb02a51e9c17e7f3988415e9899760d0e6945a32e762c54dde4163519229d55","target":"graph","created_at":"2026-05-18T00:27:12Z","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 electric field gradient (EFG) tensor at the $^{75}$As site couples to the orbital occupations of the As p-orbitals and is a sensitive probe of local nematicity in BaFe$_2$As$_2$. We use nuclear magnetic resonance to measure the nuclear quadrupolar splittings and find that the EFG asymmetry responds linearly to the presence of a strain field in the paramagnetic phase. We extract the nematic susceptibility from the slope of this linear response as a function of temperature and find that it diverges near the structural transition in agreement with other measures of the bulk nematic susceptibi","authors_text":"B. T. Bush, E. I. Timmons, M. A. Tanatar, M. Lawson, N. J. Curro, P. C. Canfield, R. M. Fernandes, R. Prozorov, R. Sarkar, S. L. Bud'ko, T. Kissikov, W. E. Pickett, W. F. Goh","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2017-10-26T05:27:38Z","title":"Local nematic susceptibility in stressed BaFe$_2$As$_2$ from NMR electric field gradient measurements"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.09547","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:b65a11dd682fbfe7cc72d9c80f542548092c87abf183e10a932db89f8347b584","target":"record","created_at":"2026-05-18T00:27:12Z","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":"0f786be6710832ad2bd3f64dc9e2e6cdc7b92df0507bb5d14fdc1bb2cd0a5337","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2017-10-26T05:27:38Z","title_canon_sha256":"18801914f32f4cc8c9fc31ab5d1e47afec3cd59d23866da2d182afbf6976b23e"},"schema_version":"1.0","source":{"id":"1710.09547","kind":"arxiv","version":1}},"canonical_sha256":"56af2eaf0b7261148d8d78dfe250dc60405948cd57454dbe09d29ae9d41f2205","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"56af2eaf0b7261148d8d78dfe250dc60405948cd57454dbe09d29ae9d41f2205","first_computed_at":"2026-05-18T00:27:12.554734Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:27:12.554734Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NOZGZaWHI7pvbGllKBfuZF4xtjnJMAiokhr8VkcC59FA8r3TjtrQlreyKmTsPLmI2GGolIBFMqFD8v2j8tIZDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:27:12.555154Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.09547","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b65a11dd682fbfe7cc72d9c80f542548092c87abf183e10a932db89f8347b584","sha256:4bb02a51e9c17e7f3988415e9899760d0e6945a32e762c54dde4163519229d55"],"state_sha256":"3c17298b8594fcf35357139536f8cc0ed81fb0938871127f57394fb35b9a771e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a1AP1oKupx1Ioyjb3EGLUwhgDNgFHmrflTcbIoXhuo7o12ShST/1WUtCGoxXGZNPPkEWoCnx9XbyjAucnDnFAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T15:04:01.728997Z","bundle_sha256":"143070f766c82bcba27a605a69607944094d6d2865497818343ac987477acdb7"}}