{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:T2LT62MA2YDLXGDPGM7RMLKZ72","short_pith_number":"pith:T2LT62MA","schema_version":"1.0","canonical_sha256":"9e973f6980d606bb986f333f162d59febc4f6479307ce82e79fb866ab4483b90","source":{"kind":"arxiv","id":"2606.27548","version":1},"attestation_state":"computed","paper":{"title":"Multiphoton Fingerprints of Altermagnetic Spin Splittings","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","cond-mat.str-el"],"primary_cat":"cond-mat.mes-hall","authors_text":"Andrew M. Rappe, Sayed Ali Akbar Ghorashi","submitted_at":"2026-06-25T20:52:14Z","abstract_excerpt":"We systematically investigate multiphoton absorption as a polarization-resolved nonlinear optical probe of planar altermagnets (ALMs). We show that the angular harmonic of the altermagnetic spin splitting fixes the lowest optical absorption at which a symmetry-selective response appears: two-photon absorption for $d$-wave order, four-photon absorption for $g$-wave order, and six-photon absorption for $i$-wave order. In each case, there exists a polarization channel locked to the symmetry harmonic of the altermagnetic texture in which the direct $n$-photon contribution to the transition matrix "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2606.27548","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2026-06-25T20:52:14Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el"],"title_canon_sha256":"e840e4f0548324fee7b702aa061ac08112cd1586a3a5122910ec83727f1ad327","abstract_canon_sha256":"01372085a71be8dc327a9269b6ccfe9d76b3557eab45024df222bb8e42197543"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-29T00:14:09.741683Z","signature_b64":"/V8vY3u+aAsTYu/wB1nmnTjym+yaCeiRTQygJS8LYMD55bHeC+T6dWM1y/aGZFu0OsS6TrPG4qZBWl/L1N3LAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9e973f6980d606bb986f333f162d59febc4f6479307ce82e79fb866ab4483b90","last_reissued_at":"2026-06-29T00:14:09.741156Z","signature_status":"signed_v1","first_computed_at":"2026-06-29T00:14:09.741156Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Multiphoton Fingerprints of Altermagnetic Spin Splittings","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","cond-mat.str-el"],"primary_cat":"cond-mat.mes-hall","authors_text":"Andrew M. Rappe, Sayed Ali Akbar Ghorashi","submitted_at":"2026-06-25T20:52:14Z","abstract_excerpt":"We systematically investigate multiphoton absorption as a polarization-resolved nonlinear optical probe of planar altermagnets (ALMs). We show that the angular harmonic of the altermagnetic spin splitting fixes the lowest optical absorption at which a symmetry-selective response appears: two-photon absorption for $d$-wave order, four-photon absorption for $g$-wave order, and six-photon absorption for $i$-wave order. In each case, there exists a polarization channel locked to the symmetry harmonic of the altermagnetic texture in which the direct $n$-photon contribution to the transition matrix "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.27548","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.27548/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2606.27548","created_at":"2026-06-29T00:14:09.741214+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.27548v1","created_at":"2026-06-29T00:14:09.741214+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.27548","created_at":"2026-06-29T00:14:09.741214+00:00"},{"alias_kind":"pith_short_12","alias_value":"T2LT62MA2YDL","created_at":"2026-06-29T00:14:09.741214+00:00"},{"alias_kind":"pith_short_16","alias_value":"T2LT62MA2YDLXGDP","created_at":"2026-06-29T00:14:09.741214+00:00"},{"alias_kind":"pith_short_8","alias_value":"T2LT62MA","created_at":"2026-06-29T00:14:09.741214+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/T2LT62MA2YDLXGDPGM7RMLKZ72","json":"https://pith.science/pith/T2LT62MA2YDLXGDPGM7RMLKZ72.json","graph_json":"https://pith.science/api/pith-number/T2LT62MA2YDLXGDPGM7RMLKZ72/graph.json","events_json":"https://pith.science/api/pith-number/T2LT62MA2YDLXGDPGM7RMLKZ72/events.json","paper":"https://pith.science/paper/T2LT62MA"},"agent_actions":{"view_html":"https://pith.science/pith/T2LT62MA2YDLXGDPGM7RMLKZ72","download_json":"https://pith.science/pith/T2LT62MA2YDLXGDPGM7RMLKZ72.json","view_paper":"https://pith.science/paper/T2LT62MA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.27548&json=true","fetch_graph":"https://pith.science/api/pith-number/T2LT62MA2YDLXGDPGM7RMLKZ72/graph.json","fetch_events":"https://pith.science/api/pith-number/T2LT62MA2YDLXGDPGM7RMLKZ72/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/T2LT62MA2YDLXGDPGM7RMLKZ72/action/timestamp_anchor","attest_storage":"https://pith.science/pith/T2LT62MA2YDLXGDPGM7RMLKZ72/action/storage_attestation","attest_author":"https://pith.science/pith/T2LT62MA2YDLXGDPGM7RMLKZ72/action/author_attestation","sign_citation":"https://pith.science/pith/T2LT62MA2YDLXGDPGM7RMLKZ72/action/citation_signature","submit_replication":"https://pith.science/pith/T2LT62MA2YDLXGDPGM7RMLKZ72/action/replication_record"}},"created_at":"2026-06-29T00:14:09.741214+00:00","updated_at":"2026-06-29T00:14:09.741214+00:00"}