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Lett. 121, 086602 (2018)","work_id":"38892397-d83a-4a5b-bc09-3194b371f0ed","year":2018}],"snapshot_sha256":"307d7325d34cd394fcb8c73219b50044d432a8def797778f950cf7f7d29bc83c"},"source":{"id":"2605.17462","kind":"arxiv","version":1},"verdict":{"created_at":"2026-05-19T22:52:00.852363Z","id":"fe761f52-446a-48d2-b4ba-3a6b6837422c","model_set":{"reader":"grok-4.3"},"one_line_summary":"A nonlinear orbital magnetoelectric effect is derived for centrosymmetric materials via extended semiclassical theory, separating intrinsic and extrinsic parts with distinct relaxation-time scalings and reduced symmetry constraints in 2D.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"A nonlinear orbital magnetoelectric effect generates orbital magnetization quadratically in centrosymmetric materials.","strongest_claim":"We propose a nonlinear orbital magnetoelectric effect, which generates orbital magnetization quadratically in centrosymmetric materials where the linear orbital magnetoelectric effect is strictly forbidden.","weakest_assumption":"The extended semiclassical formulation remains valid and gauge-invariant for the nonlinear orbital response, allowing clean separation of intrinsic and extrinsic contributions that depend differently on relaxation time."}},"verdict_id":"fe761f52-446a-48d2-b4ba-3a6b6837422c"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:7cee4279873bf6ff58f302904c745831a104d94b4d70e5bc55d8e9731f8d6aa4","target":"record","created_at":"2026-05-20T00:04:40Z","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":"6e7b2b9d4744720f88b180aabc2e002dcdb590b42220f04cffac8020830ec121","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2026-05-17T14:04:40Z","title_canon_sha256":"3aa4ff647389177878f78385adfa9bc8303173421345ed7e1b6cf46f84106439"},"schema_version":"1.0","source":{"id":"2605.17462","kind":"arxiv","version":1}},"canonical_sha256":"ba2cec3dfb30bd898e41211f6af880e20ffae3ea6aee3b6836621e51d6a5635a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ba2cec3dfb30bd898e41211f6af880e20ffae3ea6aee3b6836621e51d6a5635a","first_computed_at":"2026-05-20T00:04:40.255403Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:04:40.255403Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"te/y/4ob1qbF8ex2WV+2L0PItSMkcUtNW5dPySw+3UqOTDDU5JdUq9t9NsQztlNrR61Ps5C7XBPOqzZ02xFjDg==","signature_status":"signed_v1","signed_at":"2026-05-20T00:04:40.256309Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.17462","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7cee4279873bf6ff58f302904c745831a104d94b4d70e5bc55d8e9731f8d6aa4","sha256:1c28301fc5a021b0b3d330f7b00c1c02b4a00c2e6a3f92460b45fe802ae491df"],"state_sha256":"333c35b667e0426583d006b13c8545f8572df5a2e43aa1b717bf84b3873e75a8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WKISFohFMQobYxj22LMn/xQErjiL4txhnCLmESqT8wA3mvHkZpxwM8Tm4lPyn+OoyQK6RFznXQRWeX3b16R+CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T19:40:26.986177Z","bundle_sha256":"5e95fd099eccc246ebc9d46e0a15f5bb47448769dea59df17478d9e671669db2"}}