{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:IFRTE2PJDBITOEJR66UWO6THSK","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":"c7205c86d80e7f86fd84e56f8290362b99fb35e11048d13c51350b4780550e9b","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-10-16T02:10:00Z","title_canon_sha256":"42683ee964189822b9fdb04714f2831cde54f58d5bac457350930953d9514ca1"},"schema_version":"1.0","source":{"id":"1510.04760","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.04760","created_at":"2026-05-18T01:22:11Z"},{"alias_kind":"arxiv_version","alias_value":"1510.04760v3","created_at":"2026-05-18T01:22:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.04760","created_at":"2026-05-18T01:22:11Z"},{"alias_kind":"pith_short_12","alias_value":"IFRTE2PJDBIT","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"IFRTE2PJDBITOEJR","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"IFRTE2PJ","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:1b6cdd3bbd3d6153225afc9e475660f2b189a4819656d61376ac236799e9c05e","target":"graph","created_at":"2026-05-18T01:22:11Z","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":"The main aim of this study is to scrutinize promising plasmonic materials by understanding their electronic structure and correlating them to the optical properties of selected refractory materials. For this purpose, the electronic and optical properties of the conductive ceramics TiC, ZrC, HfC, TaC, WC, TiN, ZrN, HfN, TaN, and WN are studied systematically by means of first-principles density functional theory. A full ab initio procedure to calculate plasma frequency from the electronic band structure is discussed. The dielectric functions are calculated by including electronic interband and ","authors_text":"Mukesh Kumar, Naoto Umezawa, Satoshi Ishii, Tadaaki Nagao","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-10-16T02:10:00Z","title":"Examining the performance of refractory conductive ceramics as plasmonic materials: a theoretical approach"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.04760","kind":"arxiv","version":3},"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:c61b1832b8f29c5e6f519c7a4783e2c5abb0ccd090b139a873847ff82098149b","target":"record","created_at":"2026-05-18T01:22:11Z","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":"c7205c86d80e7f86fd84e56f8290362b99fb35e11048d13c51350b4780550e9b","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2015-10-16T02:10:00Z","title_canon_sha256":"42683ee964189822b9fdb04714f2831cde54f58d5bac457350930953d9514ca1"},"schema_version":"1.0","source":{"id":"1510.04760","kind":"arxiv","version":3}},"canonical_sha256":"41633269e91851371131f7a9677a6792b05150bea03942f209629f3463e6d8f0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"41633269e91851371131f7a9677a6792b05150bea03942f209629f3463e6d8f0","first_computed_at":"2026-05-18T01:22:11.195824Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:22:11.195824Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BDkxTrjMe1LSRFwgeHC7z/rZCV/4ZGDKpdo7N3uUNUWSPwUVUgNvCFg5slCJq0kIDQBpAGRt3i7DO6rkRfg8BA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:22:11.196333Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.04760","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c61b1832b8f29c5e6f519c7a4783e2c5abb0ccd090b139a873847ff82098149b","sha256:1b6cdd3bbd3d6153225afc9e475660f2b189a4819656d61376ac236799e9c05e"],"state_sha256":"6533318d630d62932727deb57c1108cc2cd3bebe31a29c6d9ef00c71fea18b93"}