{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:YFK2UBCYIZSIRPZBCNYKKFO6CZ","short_pith_number":"pith:YFK2UBCY","canonical_record":{"source":{"id":"1401.3306","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-01-14T19:46:18Z","cross_cats_sorted":[],"title_canon_sha256":"95816ad7689e3f81f5fe86e8a8e2a1b140082f17cd42f4d36b029ce0620e5b7d","abstract_canon_sha256":"b285ced2f58a8ee9fc23d8202d1c02190f35a30fa1fe4ffc8c9eec82262704ef"},"schema_version":"1.0"},"canonical_sha256":"c155aa0458466488bf211370a515de1673be58a3b230ff90c1e2622674d75ee6","source":{"kind":"arxiv","id":"1401.3306","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.3306","created_at":"2026-05-18T03:02:18Z"},{"alias_kind":"arxiv_version","alias_value":"1401.3306v1","created_at":"2026-05-18T03:02:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.3306","created_at":"2026-05-18T03:02:18Z"},{"alias_kind":"pith_short_12","alias_value":"YFK2UBCYIZSI","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"YFK2UBCYIZSIRPZB","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"YFK2UBCY","created_at":"2026-05-18T12:28:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:YFK2UBCYIZSIRPZBCNYKKFO6CZ","target":"record","payload":{"canonical_record":{"source":{"id":"1401.3306","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-01-14T19:46:18Z","cross_cats_sorted":[],"title_canon_sha256":"95816ad7689e3f81f5fe86e8a8e2a1b140082f17cd42f4d36b029ce0620e5b7d","abstract_canon_sha256":"b285ced2f58a8ee9fc23d8202d1c02190f35a30fa1fe4ffc8c9eec82262704ef"},"schema_version":"1.0"},"canonical_sha256":"c155aa0458466488bf211370a515de1673be58a3b230ff90c1e2622674d75ee6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:02:18.829932Z","signature_b64":"72ufUPcOXV6HCqw2boDyv/SWwusQ5szzCfkKuDb+5Icb90lerNA2vyz/4LGsjOGzPMcK4CNXyt3xl8/+mA/DAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c155aa0458466488bf211370a515de1673be58a3b230ff90c1e2622674d75ee6","last_reissued_at":"2026-05-18T03:02:18.829140Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:02:18.829140Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.3306","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":"2026-05-18T03:02:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pdGNGU/euvRXHUI4wfFKILmg3WwBspPwysdYI+X3LBkorZMJm7xbC1ldnseCewk3hNWvQg9lSGpiR4SwEKO8Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T13:43:09.794046Z"},"content_sha256":"e00957fb8c843711237196c0f487e3f3d1a4426f4a3af208825c067b121ccbcc","schema_version":"1.0","event_id":"sha256:e00957fb8c843711237196c0f487e3f3d1a4426f4a3af208825c067b121ccbcc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:YFK2UBCYIZSIRPZBCNYKKFO6CZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Simultaneously Magnetic- and Electric-dipole Active Spin Excitations Govern the Static Magnetoelectric Effect in Multiferroic Materials","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"D. Szaller, I. Kezsmarki, S. Bordacs, T. Room, U. Nagel, V. Kocsis","submitted_at":"2014-01-14T19:46:18Z","abstract_excerpt":"We derive a sum rule to demonstrate that the static magnetoelectric (ME) effect is governed by optical transitions that are simultaneously excited via the electric and magnetic components of light. By a systematic analysis of magnetic point groups, we show that the ME sum rule is applicable to a broad variety of non-centrosymmetric magnets including ME multiferroic compounds. Due to the dynamical ME effect, the optical excitations in these materials can exhibit directional dichroism, i.e. the absorption coefficient can be different for counter-propagating light beams. According to the ME sum r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.3306","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":"2026-05-18T03:02:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dO6pW5cqHFcr8KLb4sJb1moVBiSPGBC/oFOTeBiKEU1Z/2I+HXhi7t4oSW/vuFsgGJh8mUK3OhlxW3U6pERvDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T13:43:09.794402Z"},"content_sha256":"5fe769845d5eb5c4574bbf094c977f36a2f6c803c0a4c0aea47df859ae190a5a","schema_version":"1.0","event_id":"sha256:5fe769845d5eb5c4574bbf094c977f36a2f6c803c0a4c0aea47df859ae190a5a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YFK2UBCYIZSIRPZBCNYKKFO6CZ/bundle.json","state_url":"https://pith.science/pith/YFK2UBCYIZSIRPZBCNYKKFO6CZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YFK2UBCYIZSIRPZBCNYKKFO6CZ/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":"2026-06-05T13:43:09Z","links":{"resolver":"https://pith.science/pith/YFK2UBCYIZSIRPZBCNYKKFO6CZ","bundle":"https://pith.science/pith/YFK2UBCYIZSIRPZBCNYKKFO6CZ/bundle.json","state":"https://pith.science/pith/YFK2UBCYIZSIRPZBCNYKKFO6CZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YFK2UBCYIZSIRPZBCNYKKFO6CZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:YFK2UBCYIZSIRPZBCNYKKFO6CZ","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":"b285ced2f58a8ee9fc23d8202d1c02190f35a30fa1fe4ffc8c9eec82262704ef","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-01-14T19:46:18Z","title_canon_sha256":"95816ad7689e3f81f5fe86e8a8e2a1b140082f17cd42f4d36b029ce0620e5b7d"},"schema_version":"1.0","source":{"id":"1401.3306","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.3306","created_at":"2026-05-18T03:02:18Z"},{"alias_kind":"arxiv_version","alias_value":"1401.3306v1","created_at":"2026-05-18T03:02:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.3306","created_at":"2026-05-18T03:02:18Z"},{"alias_kind":"pith_short_12","alias_value":"YFK2UBCYIZSI","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_16","alias_value":"YFK2UBCYIZSIRPZB","created_at":"2026-05-18T12:28:57Z"},{"alias_kind":"pith_short_8","alias_value":"YFK2UBCY","created_at":"2026-05-18T12:28:57Z"}],"graph_snapshots":[{"event_id":"sha256:5fe769845d5eb5c4574bbf094c977f36a2f6c803c0a4c0aea47df859ae190a5a","target":"graph","created_at":"2026-05-18T03:02:18Z","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 derive a sum rule to demonstrate that the static magnetoelectric (ME) effect is governed by optical transitions that are simultaneously excited via the electric and magnetic components of light. By a systematic analysis of magnetic point groups, we show that the ME sum rule is applicable to a broad variety of non-centrosymmetric magnets including ME multiferroic compounds. Due to the dynamical ME effect, the optical excitations in these materials can exhibit directional dichroism, i.e. the absorption coefficient can be different for counter-propagating light beams. According to the ME sum r","authors_text":"D. Szaller, I. Kezsmarki, S. Bordacs, T. Room, U. Nagel, V. Kocsis","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-01-14T19:46:18Z","title":"Simultaneously Magnetic- and Electric-dipole Active Spin Excitations Govern the Static Magnetoelectric Effect in Multiferroic Materials"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.3306","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:e00957fb8c843711237196c0f487e3f3d1a4426f4a3af208825c067b121ccbcc","target":"record","created_at":"2026-05-18T03:02:18Z","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":"b285ced2f58a8ee9fc23d8202d1c02190f35a30fa1fe4ffc8c9eec82262704ef","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2014-01-14T19:46:18Z","title_canon_sha256":"95816ad7689e3f81f5fe86e8a8e2a1b140082f17cd42f4d36b029ce0620e5b7d"},"schema_version":"1.0","source":{"id":"1401.3306","kind":"arxiv","version":1}},"canonical_sha256":"c155aa0458466488bf211370a515de1673be58a3b230ff90c1e2622674d75ee6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c155aa0458466488bf211370a515de1673be58a3b230ff90c1e2622674d75ee6","first_computed_at":"2026-05-18T03:02:18.829140Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:02:18.829140Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"72ufUPcOXV6HCqw2boDyv/SWwusQ5szzCfkKuDb+5Icb90lerNA2vyz/4LGsjOGzPMcK4CNXyt3xl8/+mA/DAA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:02:18.829932Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.3306","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e00957fb8c843711237196c0f487e3f3d1a4426f4a3af208825c067b121ccbcc","sha256:5fe769845d5eb5c4574bbf094c977f36a2f6c803c0a4c0aea47df859ae190a5a"],"state_sha256":"847c3c5ae95946f4ec81a6d712579782eab0a82323e5469fbf5c68a7a93e56cc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o//lbGT+8EMa1NzVmbwi+qrGdLivHJWmmKl18fdo0vQb65RFYcjRkQcZHxrq0KT6zwMDpcd32jqRKCuuOU+ZBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T13:43:09.796356Z","bundle_sha256":"37b15e6ab61ea99fd3daba87a58debc48678aa5453d7e3983cbeb1bfa33c7941"}}