{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:CGQH4JAHT2B6ZARQUOOIWCHPY5","short_pith_number":"pith:CGQH4JAH","canonical_record":{"source":{"id":"1503.00063","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-02-28T04:00:32Z","cross_cats_sorted":[],"title_canon_sha256":"2a0cf69ea7e0127ed985507cc12cf171a3ba909adbe9020e5dd6a36adaf888d6","abstract_canon_sha256":"3fc30f4ae6c77db85a8a2250168c711303e20ca5d112d6722c05222ef6e7965c"},"schema_version":"1.0"},"canonical_sha256":"11a07e24079e83ec8230a39c8b08efc74abfa4665ae903c61607d0ca0afb8429","source":{"kind":"arxiv","id":"1503.00063","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.00063","created_at":"2026-05-18T01:03:31Z"},{"alias_kind":"arxiv_version","alias_value":"1503.00063v2","created_at":"2026-05-18T01:03:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.00063","created_at":"2026-05-18T01:03:31Z"},{"alias_kind":"pith_short_12","alias_value":"CGQH4JAHT2B6","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"CGQH4JAHT2B6ZARQ","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"CGQH4JAH","created_at":"2026-05-18T12:29:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:CGQH4JAHT2B6ZARQUOOIWCHPY5","target":"record","payload":{"canonical_record":{"source":{"id":"1503.00063","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-02-28T04:00:32Z","cross_cats_sorted":[],"title_canon_sha256":"2a0cf69ea7e0127ed985507cc12cf171a3ba909adbe9020e5dd6a36adaf888d6","abstract_canon_sha256":"3fc30f4ae6c77db85a8a2250168c711303e20ca5d112d6722c05222ef6e7965c"},"schema_version":"1.0"},"canonical_sha256":"11a07e24079e83ec8230a39c8b08efc74abfa4665ae903c61607d0ca0afb8429","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:03:31.159646Z","signature_b64":"bBRQRRK7dKTiXkcTuX+pzUaC5cB7QpVS9p5XHPO0YbyyO3lCT8fmuH7W987r9E22t+sGUNg19C2ulYVdgMjiDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"11a07e24079e83ec8230a39c8b08efc74abfa4665ae903c61607d0ca0afb8429","last_reissued_at":"2026-05-18T01:03:31.159197Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:03:31.159197Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.00063","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":"2026-05-18T01:03:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lF9YI414xzeNYNG1Xq9TYaXlQV3TXR4moXXltOC9VUgcI/jEv4D4CI6+nfzO3pJgEO7IZvvKiFwWbgik/BaFDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T05:07:13.848347Z"},"content_sha256":"8a5973866d171ac43a050be22055aa9af262a3f112c3f2d8a9ed75eb74355424","schema_version":"1.0","event_id":"sha256:8a5973866d171ac43a050be22055aa9af262a3f112c3f2d8a9ed75eb74355424"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:CGQH4JAHT2B6ZARQUOOIWCHPY5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Band-filling effect on magnetic anisotropy using a Green's function method","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Liqin Ke, Mark van Schilfgaarde","submitted_at":"2015-02-28T04:00:32Z","abstract_excerpt":"We use an analytical model to describe the magnetocrystalline anisotropy energy (MAE) in solids as a function of band filling. The MAE is evaluated in second-order perturbation theory, which makes it possible to decompose the MAE into a sum of transitions between occupied and unoccupied pairs. The model enables us to characterize the MAE as a sum of contributions from different, often competing terms. The nitridometalates Li$_{2}$[(Li$_{1-x}$T$_{x}$)N], with $T$=Mn, Fe, Co, Ni, provide a system where the model is very effective because atomic like orbital characters are preserved and the decom"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.00063","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":""},"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":"2026-05-18T01:03:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UCGJnkgVMNVjaBWvB5mdHEPFT0glf27w2a8NSe0EXBd0Z/N3e2UeZOjk81aT5B23GvmmzZw+Y1AOzNUy8VwmBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T05:07:13.848697Z"},"content_sha256":"8cfadf402fab0b29c4906bbf5ea7326adf435d295203e7fc5958435ea95b9347","schema_version":"1.0","event_id":"sha256:8cfadf402fab0b29c4906bbf5ea7326adf435d295203e7fc5958435ea95b9347"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CGQH4JAHT2B6ZARQUOOIWCHPY5/bundle.json","state_url":"https://pith.science/pith/CGQH4JAHT2B6ZARQUOOIWCHPY5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CGQH4JAHT2B6ZARQUOOIWCHPY5/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":"2026-06-02T05:07:13Z","links":{"resolver":"https://pith.science/pith/CGQH4JAHT2B6ZARQUOOIWCHPY5","bundle":"https://pith.science/pith/CGQH4JAHT2B6ZARQUOOIWCHPY5/bundle.json","state":"https://pith.science/pith/CGQH4JAHT2B6ZARQUOOIWCHPY5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CGQH4JAHT2B6ZARQUOOIWCHPY5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:CGQH4JAHT2B6ZARQUOOIWCHPY5","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":"3fc30f4ae6c77db85a8a2250168c711303e20ca5d112d6722c05222ef6e7965c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-02-28T04:00:32Z","title_canon_sha256":"2a0cf69ea7e0127ed985507cc12cf171a3ba909adbe9020e5dd6a36adaf888d6"},"schema_version":"1.0","source":{"id":"1503.00063","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.00063","created_at":"2026-05-18T01:03:31Z"},{"alias_kind":"arxiv_version","alias_value":"1503.00063v2","created_at":"2026-05-18T01:03:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.00063","created_at":"2026-05-18T01:03:31Z"},{"alias_kind":"pith_short_12","alias_value":"CGQH4JAHT2B6","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"CGQH4JAHT2B6ZARQ","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"CGQH4JAH","created_at":"2026-05-18T12:29:14Z"}],"graph_snapshots":[{"event_id":"sha256:8cfadf402fab0b29c4906bbf5ea7326adf435d295203e7fc5958435ea95b9347","target":"graph","created_at":"2026-05-18T01:03:31Z","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"},"paper":{"abstract_excerpt":"We use an analytical model to describe the magnetocrystalline anisotropy energy (MAE) in solids as a function of band filling. The MAE is evaluated in second-order perturbation theory, which makes it possible to decompose the MAE into a sum of transitions between occupied and unoccupied pairs. The model enables us to characterize the MAE as a sum of contributions from different, often competing terms. The nitridometalates Li$_{2}$[(Li$_{1-x}$T$_{x}$)N], with $T$=Mn, Fe, Co, Ni, provide a system where the model is very effective because atomic like orbital characters are preserved and the decom","authors_text":"Liqin Ke, Mark van Schilfgaarde","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-02-28T04:00:32Z","title":"Band-filling effect on magnetic anisotropy using a Green's function method"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.00063","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":"sha256:8a5973866d171ac43a050be22055aa9af262a3f112c3f2d8a9ed75eb74355424","target":"record","created_at":"2026-05-18T01:03:31Z","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":"3fc30f4ae6c77db85a8a2250168c711303e20ca5d112d6722c05222ef6e7965c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-02-28T04:00:32Z","title_canon_sha256":"2a0cf69ea7e0127ed985507cc12cf171a3ba909adbe9020e5dd6a36adaf888d6"},"schema_version":"1.0","source":{"id":"1503.00063","kind":"arxiv","version":2}},"canonical_sha256":"11a07e24079e83ec8230a39c8b08efc74abfa4665ae903c61607d0ca0afb8429","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"11a07e24079e83ec8230a39c8b08efc74abfa4665ae903c61607d0ca0afb8429","first_computed_at":"2026-05-18T01:03:31.159197Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:03:31.159197Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bBRQRRK7dKTiXkcTuX+pzUaC5cB7QpVS9p5XHPO0YbyyO3lCT8fmuH7W987r9E22t+sGUNg19C2ulYVdgMjiDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:03:31.159646Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.00063","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8a5973866d171ac43a050be22055aa9af262a3f112c3f2d8a9ed75eb74355424","sha256:8cfadf402fab0b29c4906bbf5ea7326adf435d295203e7fc5958435ea95b9347"],"state_sha256":"33583ff28e4b9fa3d29a104c4ee5c0453118fafdc1a886b492f246b239ef8dee"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c5+hLEGvKnhhwQTr9bFr5Ft+Pe9w9XQQXhELpdAOti8d4L5YrIaj3790WGnB/zdpF+IUqrzEVdUoiRgA7WHqCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T05:07:13.850578Z","bundle_sha256":"320078ff03992a9a61bdf9c5629c33f4f5e912cad5690859d4a00d33830baed3"}}