{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:UH52GAJLHLFWN34DDVCWQLY4RU","short_pith_number":"pith:UH52GAJL","canonical_record":{"source":{"id":"1904.06106","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-04-12T08:58:22Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"8f2b9aa196dab853bd3d945b44396032186ba5867567dcbc4eb0aa0daf3c6993","abstract_canon_sha256":"de345cee17de6857992c200033c8c30f7dfaa208cbf91f51b30cea6dd2bad2aa"},"schema_version":"1.0"},"canonical_sha256":"a1fba3012b3acb66ef831d45682f1c8d1ab61f6eeaf070b55a0dee638defebae","source":{"kind":"arxiv","id":"1904.06106","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.06106","created_at":"2026-05-17T23:40:32Z"},{"alias_kind":"arxiv_version","alias_value":"1904.06106v1","created_at":"2026-05-17T23:40:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.06106","created_at":"2026-05-17T23:40:32Z"},{"alias_kind":"pith_short_12","alias_value":"UH52GAJLHLFW","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UH52GAJLHLFWN34D","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UH52GAJL","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:UH52GAJLHLFWN34DDVCWQLY4RU","target":"record","payload":{"canonical_record":{"source":{"id":"1904.06106","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-04-12T08:58:22Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"8f2b9aa196dab853bd3d945b44396032186ba5867567dcbc4eb0aa0daf3c6993","abstract_canon_sha256":"de345cee17de6857992c200033c8c30f7dfaa208cbf91f51b30cea6dd2bad2aa"},"schema_version":"1.0"},"canonical_sha256":"a1fba3012b3acb66ef831d45682f1c8d1ab61f6eeaf070b55a0dee638defebae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:40:32.645595Z","signature_b64":"CskGBSgWSbOufxkeQVIj8Dljqio2bKtKXFALrLkyfpTcwDqnt2TCBZt0RmbwMbyBwkQAancZwIbqg3HOsED1Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a1fba3012b3acb66ef831d45682f1c8d1ab61f6eeaf070b55a0dee638defebae","last_reissued_at":"2026-05-17T23:40:32.645018Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:40:32.645018Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.06106","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":"2026-05-17T23:40:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+F1ECeJzzMbWmns1uv+BhCnAel5YpqTDyY+JD45UXqyfTuWL0XiM02DjJtxidDlzaSFinhF635pork7LZBDFCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:01:10.665699Z"},"content_sha256":"f3f3ae8e121cda6335c89e7312e114b0e0b7ac78500f33d8cac4ad187ab2f727","schema_version":"1.0","event_id":"sha256:f3f3ae8e121cda6335c89e7312e114b0e0b7ac78500f33d8cac4ad187ab2f727"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:UH52GAJLHLFWN34DDVCWQLY4RU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spin excitations of magnetoelectric LiNiPO$_4$ in multiple magnetic phases","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"D\\'aniel Gergely Farkas, D\\'avid Szaller, Dmytro Kamenskyi, Istv\\'an K\\'ezsm\\'arki, Johan Viirok, Laur Peedu, S\\'andor Bord\\'acs, Toomas R\\~o\\~om, Uli Zeitler, Urmas Nagel, Vilmos Kocsis, Yasujiro Taguchi, Yoshinori Tokura, Yusuke Tokunaga","submitted_at":"2019-04-12T08:58:22Z","abstract_excerpt":"Spin excitations of magnetoelectric LiNiPO$_4$ are studied by infrared absorption spectroscopy in the THz spectral range as a function of magnetic field through various commensurate and incommensurate magnetically ordered phases up to 33\\,T. Six spin resonances and a strong two-magnon continuum are observed in zero magnetic field. Our systematic polarization study reveals that some of the excitations are usual magnetic-dipole active magnon modes, while others are either electromagnons, electric-dipole active, or magnetoelectric, both electric- and magnetic-dipole active spin excitations. Field"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.06106","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":"2026-05-17T23:40:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AFD9eIp/oc3MbY0LE0XrD17r1353kH+w7TXlk5d9UIYBTUipaZrnnrIKNc8L7uPguuLUjg+dhocX+eNStyxPBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:01:10.666344Z"},"content_sha256":"096c726a3a51a3ef26eefa0badb9a46fe246d51de7d6011dc74b879320395975","schema_version":"1.0","event_id":"sha256:096c726a3a51a3ef26eefa0badb9a46fe246d51de7d6011dc74b879320395975"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UH52GAJLHLFWN34DDVCWQLY4RU/bundle.json","state_url":"https://pith.science/pith/UH52GAJLHLFWN34DDVCWQLY4RU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UH52GAJLHLFWN34DDVCWQLY4RU/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":"2026-05-25T21:01:10Z","links":{"resolver":"https://pith.science/pith/UH52GAJLHLFWN34DDVCWQLY4RU","bundle":"https://pith.science/pith/UH52GAJLHLFWN34DDVCWQLY4RU/bundle.json","state":"https://pith.science/pith/UH52GAJLHLFWN34DDVCWQLY4RU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UH52GAJLHLFWN34DDVCWQLY4RU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:UH52GAJLHLFWN34DDVCWQLY4RU","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":"de345cee17de6857992c200033c8c30f7dfaa208cbf91f51b30cea6dd2bad2aa","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-04-12T08:58:22Z","title_canon_sha256":"8f2b9aa196dab853bd3d945b44396032186ba5867567dcbc4eb0aa0daf3c6993"},"schema_version":"1.0","source":{"id":"1904.06106","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.06106","created_at":"2026-05-17T23:40:32Z"},{"alias_kind":"arxiv_version","alias_value":"1904.06106v1","created_at":"2026-05-17T23:40:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.06106","created_at":"2026-05-17T23:40:32Z"},{"alias_kind":"pith_short_12","alias_value":"UH52GAJLHLFW","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"UH52GAJLHLFWN34D","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"UH52GAJL","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:096c726a3a51a3ef26eefa0badb9a46fe246d51de7d6011dc74b879320395975","target":"graph","created_at":"2026-05-17T23:40:32Z","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":"Spin excitations of magnetoelectric LiNiPO$_4$ are studied by infrared absorption spectroscopy in the THz spectral range as a function of magnetic field through various commensurate and incommensurate magnetically ordered phases up to 33\\,T. Six spin resonances and a strong two-magnon continuum are observed in zero magnetic field. Our systematic polarization study reveals that some of the excitations are usual magnetic-dipole active magnon modes, while others are either electromagnons, electric-dipole active, or magnetoelectric, both electric- and magnetic-dipole active spin excitations. Field","authors_text":"D\\'aniel Gergely Farkas, D\\'avid Szaller, Dmytro Kamenskyi, Istv\\'an K\\'ezsm\\'arki, Johan Viirok, Laur Peedu, S\\'andor Bord\\'acs, Toomas R\\~o\\~om, Uli Zeitler, Urmas Nagel, Vilmos Kocsis, Yasujiro Taguchi, Yoshinori Tokura, Yusuke Tokunaga","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-04-12T08:58:22Z","title":"Spin excitations of magnetoelectric LiNiPO$_4$ in multiple magnetic phases"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.06106","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:f3f3ae8e121cda6335c89e7312e114b0e0b7ac78500f33d8cac4ad187ab2f727","target":"record","created_at":"2026-05-17T23:40:32Z","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":"de345cee17de6857992c200033c8c30f7dfaa208cbf91f51b30cea6dd2bad2aa","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-04-12T08:58:22Z","title_canon_sha256":"8f2b9aa196dab853bd3d945b44396032186ba5867567dcbc4eb0aa0daf3c6993"},"schema_version":"1.0","source":{"id":"1904.06106","kind":"arxiv","version":1}},"canonical_sha256":"a1fba3012b3acb66ef831d45682f1c8d1ab61f6eeaf070b55a0dee638defebae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a1fba3012b3acb66ef831d45682f1c8d1ab61f6eeaf070b55a0dee638defebae","first_computed_at":"2026-05-17T23:40:32.645018Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:40:32.645018Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CskGBSgWSbOufxkeQVIj8Dljqio2bKtKXFALrLkyfpTcwDqnt2TCBZt0RmbwMbyBwkQAancZwIbqg3HOsED1Dw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:40:32.645595Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.06106","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f3f3ae8e121cda6335c89e7312e114b0e0b7ac78500f33d8cac4ad187ab2f727","sha256:096c726a3a51a3ef26eefa0badb9a46fe246d51de7d6011dc74b879320395975"],"state_sha256":"87ece550b296aa7a362dc9ad0b4f10b3b4e3157c53095e6f74ec7c85814b19fa"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qab7LcOfPjZVPI6k3IXfzQ3POMR8p2ackW6sYu0cpEMlJirw3xROVuQezVpHHPczGqSglsnZFMGP+DHTyTw+BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:01:10.670050Z","bundle_sha256":"45359e189e47cefeacb92e36fbfc79ecb4c358da71b7caec3a7d14abf43a3763"}}