{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:3EMJGRQUSZBDEQZXTJCNEKMTWP","short_pith_number":"pith:3EMJGRQU","canonical_record":{"source":{"id":"2006.01792","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2020-06-02T17:20:10Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"4713a872d7b2d2a609f900c7f2431d573b7a1e89418e992d3357b46503d2e391","abstract_canon_sha256":"7c3c9a464bc9e6d6879005f324e14e399013d545db6db279d4afeebce19eec0c"},"schema_version":"1.0"},"canonical_sha256":"d91893461496423243379a44d22993b3fe7db0842107d034bb4f52621aa6cc96","source":{"kind":"arxiv","id":"2006.01792","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.01792","created_at":"2026-07-05T02:06:31Z"},{"alias_kind":"arxiv_version","alias_value":"2006.01792v2","created_at":"2026-07-05T02:06:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.01792","created_at":"2026-07-05T02:06:31Z"},{"alias_kind":"pith_short_12","alias_value":"3EMJGRQUSZBD","created_at":"2026-07-05T02:06:31Z"},{"alias_kind":"pith_short_16","alias_value":"3EMJGRQUSZBDEQZX","created_at":"2026-07-05T02:06:31Z"},{"alias_kind":"pith_short_8","alias_value":"3EMJGRQU","created_at":"2026-07-05T02:06:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:3EMJGRQUSZBDEQZXTJCNEKMTWP","target":"record","payload":{"canonical_record":{"source":{"id":"2006.01792","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2020-06-02T17:20:10Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"4713a872d7b2d2a609f900c7f2431d573b7a1e89418e992d3357b46503d2e391","abstract_canon_sha256":"7c3c9a464bc9e6d6879005f324e14e399013d545db6db279d4afeebce19eec0c"},"schema_version":"1.0"},"canonical_sha256":"d91893461496423243379a44d22993b3fe7db0842107d034bb4f52621aa6cc96","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:06:31.033719Z","signature_b64":"HyG0TdOd1XPFVhQSrm/tfKlmYJcd6QScNeIpqQfJYUuL+yaikjuGhZCHSpu33zLybggM0d/S1F/X4eW4pMjtCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d91893461496423243379a44d22993b3fe7db0842107d034bb4f52621aa6cc96","last_reissued_at":"2026-07-05T02:06:31.033147Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:06:31.033147Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.01792","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:06:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kBwrJo/wkdtvFaDGoWP9gj+L/uGNNjimJeuXh0CZi+zxuSJXe7ue0cvopow+PYYUioXMoIgeTXoruCoMy9keAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T04:15:17.506663Z"},"content_sha256":"55d62f9d7c6a87b2ba90213a15eef8ca967854cbd41a1824fc7dee4cd21c0380","schema_version":"1.0","event_id":"sha256:55d62f9d7c6a87b2ba90213a15eef8ca967854cbd41a1824fc7dee4cd21c0380"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:3EMJGRQUSZBDEQZXTJCNEKMTWP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Intrinsically weak magnetic anisotropy of cerium in potential hard-magnetic intermetallics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.str-el","authors_text":"Anna Galler, Fernando Maccari, Imants Dirba, Konstantin P. Skokov, Leonid V. Pourovskii, Oliver Gutfleisch, Semih Ener, Silke Biermann","submitted_at":"2020-06-02T17:20:10Z","abstract_excerpt":"Cerium-based intermetallics are currently attracting much interest as a possible alternative to existing high-performance magnets containing scarce heavy rare-earth elements. However, the intrinsic magnetic properties of Ce in these systems are poorly understood due to the difficulty of a quantitative description of the Kondo effect, a many-body phenomenon where conduction electrons screen out the Ce-4f moment. Here, we show that the Ce-4f shell in Ce-Fe intermetallics is partially Kondo screened. The Kondo scale is dramatically enhanced by nitrogen interstitials completely suppressing the Ce-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.01792","kind":"arxiv","version":2},"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/2006.01792/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:06:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WAZ7J6v14URtToPFXdwyFWAIrOu1MIG3ymd6vuksULZ+s2g+A79jX1sCkN4XByFVWCNIACb6+9r74DBf0dXWAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T04:15:17.507391Z"},"content_sha256":"2fd64648cc593cddda9b41f3dda3eb2aecb23ca70bda1bad1edfd5ad3662007e","schema_version":"1.0","event_id":"sha256:2fd64648cc593cddda9b41f3dda3eb2aecb23ca70bda1bad1edfd5ad3662007e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3EMJGRQUSZBDEQZXTJCNEKMTWP/bundle.json","state_url":"https://pith.science/pith/3EMJGRQUSZBDEQZXTJCNEKMTWP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3EMJGRQUSZBDEQZXTJCNEKMTWP/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":"2026-08-15T04:15:17Z","links":{"resolver":"https://pith.science/pith/3EMJGRQUSZBDEQZXTJCNEKMTWP","bundle":"https://pith.science/pith/3EMJGRQUSZBDEQZXTJCNEKMTWP/bundle.json","state":"https://pith.science/pith/3EMJGRQUSZBDEQZXTJCNEKMTWP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3EMJGRQUSZBDEQZXTJCNEKMTWP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:3EMJGRQUSZBDEQZXTJCNEKMTWP","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":"7c3c9a464bc9e6d6879005f324e14e399013d545db6db279d4afeebce19eec0c","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2020-06-02T17:20:10Z","title_canon_sha256":"4713a872d7b2d2a609f900c7f2431d573b7a1e89418e992d3357b46503d2e391"},"schema_version":"1.0","source":{"id":"2006.01792","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.01792","created_at":"2026-07-05T02:06:31Z"},{"alias_kind":"arxiv_version","alias_value":"2006.01792v2","created_at":"2026-07-05T02:06:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.01792","created_at":"2026-07-05T02:06:31Z"},{"alias_kind":"pith_short_12","alias_value":"3EMJGRQUSZBD","created_at":"2026-07-05T02:06:31Z"},{"alias_kind":"pith_short_16","alias_value":"3EMJGRQUSZBDEQZX","created_at":"2026-07-05T02:06:31Z"},{"alias_kind":"pith_short_8","alias_value":"3EMJGRQU","created_at":"2026-07-05T02:06:31Z"}],"graph_snapshots":[{"event_id":"sha256:2fd64648cc593cddda9b41f3dda3eb2aecb23ca70bda1bad1edfd5ad3662007e","target":"graph","created_at":"2026-07-05T02:06:31Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2006.01792/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Cerium-based intermetallics are currently attracting much interest as a possible alternative to existing high-performance magnets containing scarce heavy rare-earth elements. However, the intrinsic magnetic properties of Ce in these systems are poorly understood due to the difficulty of a quantitative description of the Kondo effect, a many-body phenomenon where conduction electrons screen out the Ce-4f moment. Here, we show that the Ce-4f shell in Ce-Fe intermetallics is partially Kondo screened. The Kondo scale is dramatically enhanced by nitrogen interstitials completely suppressing the Ce-","authors_text":"Anna Galler, Fernando Maccari, Imants Dirba, Konstantin P. Skokov, Leonid V. Pourovskii, Oliver Gutfleisch, Semih Ener, Silke Biermann","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2020-06-02T17:20:10Z","title":"Intrinsically weak magnetic anisotropy of cerium in potential hard-magnetic intermetallics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.01792","kind":"arxiv","version":2},"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":"sha256:55d62f9d7c6a87b2ba90213a15eef8ca967854cbd41a1824fc7dee4cd21c0380","target":"record","created_at":"2026-07-05T02:06:31Z","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":"7c3c9a464bc9e6d6879005f324e14e399013d545db6db279d4afeebce19eec0c","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2020-06-02T17:20:10Z","title_canon_sha256":"4713a872d7b2d2a609f900c7f2431d573b7a1e89418e992d3357b46503d2e391"},"schema_version":"1.0","source":{"id":"2006.01792","kind":"arxiv","version":2}},"canonical_sha256":"d91893461496423243379a44d22993b3fe7db0842107d034bb4f52621aa6cc96","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d91893461496423243379a44d22993b3fe7db0842107d034bb4f52621aa6cc96","first_computed_at":"2026-07-05T02:06:31.033147Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:06:31.033147Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HyG0TdOd1XPFVhQSrm/tfKlmYJcd6QScNeIpqQfJYUuL+yaikjuGhZCHSpu33zLybggM0d/S1F/X4eW4pMjtCg==","signature_status":"signed_v1","signed_at":"2026-07-05T02:06:31.033719Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.01792","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:55d62f9d7c6a87b2ba90213a15eef8ca967854cbd41a1824fc7dee4cd21c0380","sha256:2fd64648cc593cddda9b41f3dda3eb2aecb23ca70bda1bad1edfd5ad3662007e"],"state_sha256":"9f9851a83d67c0da9ba27f691d225c47598d8b51a9a786d273199d0dca921fc0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BF4jaEqu/C8IqtbVFAQpTzJa9zldGxBMP6qsRwxqnvETLYQR2nCJPkzm5dMUWWjC90xpgKt0g9fMMJldFbm+Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T04:15:17.514922Z","bundle_sha256":"99e9075853d9fbd05c6c13d99e3bbbbfe846c1470ee2d2aa0069f04b2c162306"}}