{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:M464ULPZOVQ4PTAG2MSG6LL22D","short_pith_number":"pith:M464ULPZ","schema_version":"1.0","canonical_sha256":"673dca2df97561c7cc06d3246f2d7ad0fd4ece571b219df6fd093d1595137bcc","source":{"kind":"arxiv","id":"1510.06968","version":1},"attestation_state":"computed","paper":{"title":"Racah materials: role of atomic multiplets in intermediate valence systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"A. B. Shick, A. I. Lichtenstein, L. Havela, M. I. Katsnelson","submitted_at":"2015-10-23T15:28:38Z","abstract_excerpt":"We address the long-standing mystery of the nonmagnetic insulating state of the intermediate valence compound SmB$_6$. Within a combination of the local density approximation (LDA) and an exact diagonalization (ED) of an effective discrete Anderson impurity model, the intermediate valence ground state with the $f$-shell occupation $\\langle n_{4f} \\rangle=5.6$ is found for the Sm atom in SmB$_6$. This ground state is a singlet, and the first excited triplet state $\\sim 3$ meV higher in the energy. SmB$_6$ is a narrow band insulator already in LDA, with the direct band gap of $\\sim 10$ meV. The "},"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":"1510.06968","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-10-23T15:28:38Z","cross_cats_sorted":[],"title_canon_sha256":"7d540c0b8a6f47cba08ac0027affaa0433e3c0c118339c209feb129bfb7a0529","abstract_canon_sha256":"bfc97c9425d24d8f5d33181bca00b4ff138ee0e342451ffb872b253db2245100"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:29:22.537379Z","signature_b64":"xunoLfydrNQvesJgQTDIAJ4Z1p/zTnLydWDSuxrmV12gK9svGfdb8T08785aU7LURl9bWtFAl17gOkpAq7nLDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"673dca2df97561c7cc06d3246f2d7ad0fd4ece571b219df6fd093d1595137bcc","last_reissued_at":"2026-05-18T01:29:22.536695Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:29:22.536695Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Racah materials: role of atomic multiplets in intermediate valence systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"A. B. Shick, A. I. Lichtenstein, L. Havela, M. I. Katsnelson","submitted_at":"2015-10-23T15:28:38Z","abstract_excerpt":"We address the long-standing mystery of the nonmagnetic insulating state of the intermediate valence compound SmB$_6$. Within a combination of the local density approximation (LDA) and an exact diagonalization (ED) of an effective discrete Anderson impurity model, the intermediate valence ground state with the $f$-shell occupation $\\langle n_{4f} \\rangle=5.6$ is found for the Sm atom in SmB$_6$. This ground state is a singlet, and the first excited triplet state $\\sim 3$ meV higher in the energy. SmB$_6$ is a narrow band insulator already in LDA, with the direct band gap of $\\sim 10$ meV. The "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.06968","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1510.06968","created_at":"2026-05-18T01:29:22.536806+00:00"},{"alias_kind":"arxiv_version","alias_value":"1510.06968v1","created_at":"2026-05-18T01:29:22.536806+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.06968","created_at":"2026-05-18T01:29:22.536806+00:00"},{"alias_kind":"pith_short_12","alias_value":"M464ULPZOVQ4","created_at":"2026-05-18T12:29:32.376354+00:00"},{"alias_kind":"pith_short_16","alias_value":"M464ULPZOVQ4PTAG","created_at":"2026-05-18T12:29:32.376354+00:00"},{"alias_kind":"pith_short_8","alias_value":"M464ULPZ","created_at":"2026-05-18T12:29:32.376354+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/M464ULPZOVQ4PTAG2MSG6LL22D","json":"https://pith.science/pith/M464ULPZOVQ4PTAG2MSG6LL22D.json","graph_json":"https://pith.science/api/pith-number/M464ULPZOVQ4PTAG2MSG6LL22D/graph.json","events_json":"https://pith.science/api/pith-number/M464ULPZOVQ4PTAG2MSG6LL22D/events.json","paper":"https://pith.science/paper/M464ULPZ"},"agent_actions":{"view_html":"https://pith.science/pith/M464ULPZOVQ4PTAG2MSG6LL22D","download_json":"https://pith.science/pith/M464ULPZOVQ4PTAG2MSG6LL22D.json","view_paper":"https://pith.science/paper/M464ULPZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1510.06968&json=true","fetch_graph":"https://pith.science/api/pith-number/M464ULPZOVQ4PTAG2MSG6LL22D/graph.json","fetch_events":"https://pith.science/api/pith-number/M464ULPZOVQ4PTAG2MSG6LL22D/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/M464ULPZOVQ4PTAG2MSG6LL22D/action/timestamp_anchor","attest_storage":"https://pith.science/pith/M464ULPZOVQ4PTAG2MSG6LL22D/action/storage_attestation","attest_author":"https://pith.science/pith/M464ULPZOVQ4PTAG2MSG6LL22D/action/author_attestation","sign_citation":"https://pith.science/pith/M464ULPZOVQ4PTAG2MSG6LL22D/action/citation_signature","submit_replication":"https://pith.science/pith/M464ULPZOVQ4PTAG2MSG6LL22D/action/replication_record"}},"created_at":"2026-05-18T01:29:22.536806+00:00","updated_at":"2026-05-18T01:29:22.536806+00:00"}