{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:TNKZP4LFCSS3QTIWVAZ4JLNC6C","short_pith_number":"pith:TNKZP4LF","canonical_record":{"source":{"id":"2209.00785","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2022-09-02T02:16:37Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"title_canon_sha256":"5129d96e67aaa1a3546d266fa6a2fd6d64a1600c8bb96f34762e0207bc43d492","abstract_canon_sha256":"89f5aa8e5677c1bf05049d1c539cb79f84fd739f3939ec74e4ed4873b436506d"},"schema_version":"1.0"},"canonical_sha256":"9b5597f16514a5b84d16a833c4ada2f0807764967b49615de266338a111cbbae","source":{"kind":"arxiv","id":"2209.00785","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.00785","created_at":"2026-07-05T04:57:27Z"},{"alias_kind":"arxiv_version","alias_value":"2209.00785v1","created_at":"2026-07-05T04:57:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.00785","created_at":"2026-07-05T04:57:27Z"},{"alias_kind":"pith_short_12","alias_value":"TNKZP4LFCSS3","created_at":"2026-07-05T04:57:27Z"},{"alias_kind":"pith_short_16","alias_value":"TNKZP4LFCSS3QTIW","created_at":"2026-07-05T04:57:27Z"},{"alias_kind":"pith_short_8","alias_value":"TNKZP4LF","created_at":"2026-07-05T04:57:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:TNKZP4LFCSS3QTIWVAZ4JLNC6C","target":"record","payload":{"canonical_record":{"source":{"id":"2209.00785","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2022-09-02T02:16:37Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"title_canon_sha256":"5129d96e67aaa1a3546d266fa6a2fd6d64a1600c8bb96f34762e0207bc43d492","abstract_canon_sha256":"89f5aa8e5677c1bf05049d1c539cb79f84fd739f3939ec74e4ed4873b436506d"},"schema_version":"1.0"},"canonical_sha256":"9b5597f16514a5b84d16a833c4ada2f0807764967b49615de266338a111cbbae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:57:27.278596Z","signature_b64":"egGVU522iIn6Ab8fa08ydjTlmOgCU3zLQR8B19jAdqlG+D7g0UQZq5/SwVJsa9GlFyoW1km7HRBoDYj4bIHICw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9b5597f16514a5b84d16a833c4ada2f0807764967b49615de266338a111cbbae","last_reissued_at":"2026-07-05T04:57:27.278194Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:57:27.278194Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2209.00785","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T04:57:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IXV37GpbiAOwH+KCVBTVbfYc/KGNummU9nhVsVpbvSGoI8SC1osa09Eqqqdy4Hi0hNS2psevW14CTzd5uFD6AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T14:07:39.964546Z"},"content_sha256":"4c865010f5a366dc10145301548d7601373b0784799df8c3a968a67b8a8c40ff","schema_version":"1.0","event_id":"sha256:4c865010f5a366dc10145301548d7601373b0784799df8c3a968a67b8a8c40ff"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:TNKZP4LFCSS3QTIWVAZ4JLNC6C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Linear-in-Frequency Optical Conductivity over a broad range in the three-dimensional Dirac semimetal candidate Ir$_2$In$_8$Se","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"primary_cat":"cond-mat.str-el","authors_text":"D. Wu, H. M. Weng, H. Q. Pi, N. L. Wang, Q. Wu, R. S. Li, S. X. Xu, T. C. Hu","submitted_at":"2022-09-02T02:16:37Z","abstract_excerpt":"The optical conductivity of the new Dirac semimetal candidate Ir$_2$In$_8$Se is measured in a frequency range from 40 to 30000 cm$^{-1}$ at temperatures from 300 K down to 10 K. The measurement reveals that the compound is a low carrier density metal. We find that the real part of the conductivity $\\sigma_1(\\omega)$ is linear in frequency over a broad range from 500 to 4000 cm$^{-1}$ at 300 K and varies slightly with cooling. This linearity strongly suggests the presence of three-dimensional linear electronic bands with band crossings near the Fermi level. Band structure calculations indicate "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.00785","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/2209.00785/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":"2026-07-05T04:57:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lu7xFMAqxYkEvvOuwhbJXurS42N6hATJX0JnXpBNVnoyqO3dOJXR1T4iuJ/ln04x6bpvgjT1yx0J5GyeBXQKDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T14:07:39.964830Z"},"content_sha256":"33e2656618765e0786ca9dfcfee93972d1349bbe198e039d9c1db1e7eebc9ae6","schema_version":"1.0","event_id":"sha256:33e2656618765e0786ca9dfcfee93972d1349bbe198e039d9c1db1e7eebc9ae6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TNKZP4LFCSS3QTIWVAZ4JLNC6C/bundle.json","state_url":"https://pith.science/pith/TNKZP4LFCSS3QTIWVAZ4JLNC6C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TNKZP4LFCSS3QTIWVAZ4JLNC6C/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":"2026-07-31T14:07:39Z","links":{"resolver":"https://pith.science/pith/TNKZP4LFCSS3QTIWVAZ4JLNC6C","bundle":"https://pith.science/pith/TNKZP4LFCSS3QTIWVAZ4JLNC6C/bundle.json","state":"https://pith.science/pith/TNKZP4LFCSS3QTIWVAZ4JLNC6C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TNKZP4LFCSS3QTIWVAZ4JLNC6C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:TNKZP4LFCSS3QTIWVAZ4JLNC6C","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":"89f5aa8e5677c1bf05049d1c539cb79f84fd739f3939ec74e4ed4873b436506d","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2022-09-02T02:16:37Z","title_canon_sha256":"5129d96e67aaa1a3546d266fa6a2fd6d64a1600c8bb96f34762e0207bc43d492"},"schema_version":"1.0","source":{"id":"2209.00785","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.00785","created_at":"2026-07-05T04:57:27Z"},{"alias_kind":"arxiv_version","alias_value":"2209.00785v1","created_at":"2026-07-05T04:57:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.00785","created_at":"2026-07-05T04:57:27Z"},{"alias_kind":"pith_short_12","alias_value":"TNKZP4LFCSS3","created_at":"2026-07-05T04:57:27Z"},{"alias_kind":"pith_short_16","alias_value":"TNKZP4LFCSS3QTIW","created_at":"2026-07-05T04:57:27Z"},{"alias_kind":"pith_short_8","alias_value":"TNKZP4LF","created_at":"2026-07-05T04:57:27Z"}],"graph_snapshots":[{"event_id":"sha256:33e2656618765e0786ca9dfcfee93972d1349bbe198e039d9c1db1e7eebc9ae6","target":"graph","created_at":"2026-07-05T04:57:27Z","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/2209.00785/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The optical conductivity of the new Dirac semimetal candidate Ir$_2$In$_8$Se is measured in a frequency range from 40 to 30000 cm$^{-1}$ at temperatures from 300 K down to 10 K. The measurement reveals that the compound is a low carrier density metal. We find that the real part of the conductivity $\\sigma_1(\\omega)$ is linear in frequency over a broad range from 500 to 4000 cm$^{-1}$ at 300 K and varies slightly with cooling. This linearity strongly suggests the presence of three-dimensional linear electronic bands with band crossings near the Fermi level. Band structure calculations indicate ","authors_text":"D. Wu, H. M. Weng, H. Q. Pi, N. L. Wang, Q. Wu, R. S. Li, S. X. Xu, T. C. Hu","cross_cats":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2022-09-02T02:16:37Z","title":"Linear-in-Frequency Optical Conductivity over a broad range in the three-dimensional Dirac semimetal candidate Ir$_2$In$_8$Se"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.00785","kind":"arxiv","version":1},"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":"sha256:4c865010f5a366dc10145301548d7601373b0784799df8c3a968a67b8a8c40ff","target":"record","created_at":"2026-07-05T04:57:27Z","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":"89f5aa8e5677c1bf05049d1c539cb79f84fd739f3939ec74e4ed4873b436506d","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2022-09-02T02:16:37Z","title_canon_sha256":"5129d96e67aaa1a3546d266fa6a2fd6d64a1600c8bb96f34762e0207bc43d492"},"schema_version":"1.0","source":{"id":"2209.00785","kind":"arxiv","version":1}},"canonical_sha256":"9b5597f16514a5b84d16a833c4ada2f0807764967b49615de266338a111cbbae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9b5597f16514a5b84d16a833c4ada2f0807764967b49615de266338a111cbbae","first_computed_at":"2026-07-05T04:57:27.278194Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:57:27.278194Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"egGVU522iIn6Ab8fa08ydjTlmOgCU3zLQR8B19jAdqlG+D7g0UQZq5/SwVJsa9GlFyoW1km7HRBoDYj4bIHICw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:57:27.278596Z","signed_message":"canonical_sha256_bytes"},"source_id":"2209.00785","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4c865010f5a366dc10145301548d7601373b0784799df8c3a968a67b8a8c40ff","sha256:33e2656618765e0786ca9dfcfee93972d1349bbe198e039d9c1db1e7eebc9ae6"],"state_sha256":"a1e0d79dd5127a7141d3de171e1b56f8d2cc6160a443581090da6a1a3d991345"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kYVraofUnGOzmKjohqpVhczo0RI0YaDa9WpnoaoB4e3a3H76LU0Kw44u1dh4MLoL/R2Rcx6XKKVZh1S3M8gXCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-31T14:07:39.967217Z","bundle_sha256":"aa0681e6a362bb35b213f46919fb6131cc1b3e0d5ddf00944a3afaa9cc1fc64e"}}