{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:4U6ONICKRO3M2LPXCRDM4ZNOBF","short_pith_number":"pith:4U6ONICK","schema_version":"1.0","canonical_sha256":"e53ce6a04a8bb6cd2df71446ce65ae0951d45ce22cd339df0a51b891a6ea1409","source":{"kind":"arxiv","id":"2501.17417","version":1},"attestation_state":"computed","paper":{"title":"Spin-forbidden excitations in the magneto-optical spectra of CrI$_3$ tuned by covalency","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.str-el","authors_text":"Ahmet Kemal Demir, Chandra Shekhar, Claudia Felser, Connor A. Occhialini, Jonathan Pelliciari, Kenji Watanabe, Luca Nessi, Luiz G. P. Martins, Qian Song, Riccardo Comin, Takashi Taniguchi, Valentina Bisogni, Vicky Hasse","submitted_at":"2025-01-29T05:06:41Z","abstract_excerpt":"Spin-forbidden ($\\Delta S \\neq 0$) multiplet excitations and their coupling to magnetic properties are of increasing importance for magneto-optical studies of correlated materials. Nonetheless, the mechanisms for optically brightening these transitions and their generality remain poorly understood. Here, we report magnetic circular dichroism (MCD) spectroscopy on the van der Waals (vdW) ferromagnet (FM) CrI$_3$. Previously unreported spin-forbidden ($\\Delta S = 1$) ${}^4A_{2\\mathrm{g}} \\to{}^2E_\\mathrm{g}/{}^2T_{1\\mathrm{g}}$ Cr${}^{3+}$ $dd$ excitations are observed near the ligand-to-metal c"},"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":"2501.17417","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-01-29T05:06:41Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"1b493d96231b8d9b6e6e60c701318b961adc38a14ebf0cfaa5761c622923a6d4","abstract_canon_sha256":"7bcfcbe0ceed43482aa45bb9732d92c33bc10124709c2dbe93f4f74df170cdab"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:06:52.620194Z","signature_b64":"jpFYVDAbWbqg6qN0Dow6L47vWIp3udo5/nzJ2aMhsDLO+HPpfJdSvIO0mnSKT7qKkOMiArDCYOpAgumQpHK2CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e53ce6a04a8bb6cd2df71446ce65ae0951d45ce22cd339df0a51b891a6ea1409","last_reissued_at":"2026-07-05T10:06:52.619700Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:06:52.619700Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spin-forbidden excitations in the magneto-optical spectra of CrI$_3$ tuned by covalency","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.str-el","authors_text":"Ahmet Kemal Demir, Chandra Shekhar, Claudia Felser, Connor A. Occhialini, Jonathan Pelliciari, Kenji Watanabe, Luca Nessi, Luiz G. P. Martins, Qian Song, Riccardo Comin, Takashi Taniguchi, Valentina Bisogni, Vicky Hasse","submitted_at":"2025-01-29T05:06:41Z","abstract_excerpt":"Spin-forbidden ($\\Delta S \\neq 0$) multiplet excitations and their coupling to magnetic properties are of increasing importance for magneto-optical studies of correlated materials. Nonetheless, the mechanisms for optically brightening these transitions and their generality remain poorly understood. Here, we report magnetic circular dichroism (MCD) spectroscopy on the van der Waals (vdW) ferromagnet (FM) CrI$_3$. Previously unreported spin-forbidden ($\\Delta S = 1$) ${}^4A_{2\\mathrm{g}} \\to{}^2E_\\mathrm{g}/{}^2T_{1\\mathrm{g}}$ Cr${}^{3+}$ $dd$ excitations are observed near the ligand-to-metal c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.17417","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/2501.17417/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":"2501.17417","created_at":"2026-07-05T10:06:52.619750+00:00"},{"alias_kind":"arxiv_version","alias_value":"2501.17417v1","created_at":"2026-07-05T10:06:52.619750+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.17417","created_at":"2026-07-05T10:06:52.619750+00:00"},{"alias_kind":"pith_short_12","alias_value":"4U6ONICKRO3M","created_at":"2026-07-05T10:06:52.619750+00:00"},{"alias_kind":"pith_short_16","alias_value":"4U6ONICKRO3M2LPX","created_at":"2026-07-05T10:06:52.619750+00:00"},{"alias_kind":"pith_short_8","alias_value":"4U6ONICK","created_at":"2026-07-05T10:06:52.619750+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/4U6ONICKRO3M2LPXCRDM4ZNOBF","json":"https://pith.science/pith/4U6ONICKRO3M2LPXCRDM4ZNOBF.json","graph_json":"https://pith.science/api/pith-number/4U6ONICKRO3M2LPXCRDM4ZNOBF/graph.json","events_json":"https://pith.science/api/pith-number/4U6ONICKRO3M2LPXCRDM4ZNOBF/events.json","paper":"https://pith.science/paper/4U6ONICK"},"agent_actions":{"view_html":"https://pith.science/pith/4U6ONICKRO3M2LPXCRDM4ZNOBF","download_json":"https://pith.science/pith/4U6ONICKRO3M2LPXCRDM4ZNOBF.json","view_paper":"https://pith.science/paper/4U6ONICK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2501.17417&json=true","fetch_graph":"https://pith.science/api/pith-number/4U6ONICKRO3M2LPXCRDM4ZNOBF/graph.json","fetch_events":"https://pith.science/api/pith-number/4U6ONICKRO3M2LPXCRDM4ZNOBF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4U6ONICKRO3M2LPXCRDM4ZNOBF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4U6ONICKRO3M2LPXCRDM4ZNOBF/action/storage_attestation","attest_author":"https://pith.science/pith/4U6ONICKRO3M2LPXCRDM4ZNOBF/action/author_attestation","sign_citation":"https://pith.science/pith/4U6ONICKRO3M2LPXCRDM4ZNOBF/action/citation_signature","submit_replication":"https://pith.science/pith/4U6ONICKRO3M2LPXCRDM4ZNOBF/action/replication_record"}},"created_at":"2026-07-05T10:06:52.619750+00:00","updated_at":"2026-07-05T10:06:52.619750+00:00"}