{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:XUXQB4PAI3BJ4CHCEH544XPSXS","short_pith_number":"pith:XUXQB4PA","canonical_record":{"source":{"id":"2108.09633","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-08-22T04:31:47Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el"],"title_canon_sha256":"2afdaa4d7bdfeca72e5638675134f5e7d27678439439efc15f6ece3b669a0d37","abstract_canon_sha256":"100cca0826df7831aeda1997858ef131fb4fc6623f4513c58b3c9e2f22ab352f"},"schema_version":"1.0"},"canonical_sha256":"bd2f00f1e046c29e08e221fbce5df2bc8b4b0c85fb82c1b4ed9023cad2cbb27a","source":{"kind":"arxiv","id":"2108.09633","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.09633","created_at":"2026-07-05T03:07:56Z"},{"alias_kind":"arxiv_version","alias_value":"2108.09633v1","created_at":"2026-07-05T03:07:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.09633","created_at":"2026-07-05T03:07:56Z"},{"alias_kind":"pith_short_12","alias_value":"XUXQB4PAI3BJ","created_at":"2026-07-05T03:07:56Z"},{"alias_kind":"pith_short_16","alias_value":"XUXQB4PAI3BJ4CHC","created_at":"2026-07-05T03:07:56Z"},{"alias_kind":"pith_short_8","alias_value":"XUXQB4PA","created_at":"2026-07-05T03:07:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:XUXQB4PAI3BJ4CHCEH544XPSXS","target":"record","payload":{"canonical_record":{"source":{"id":"2108.09633","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-08-22T04:31:47Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el"],"title_canon_sha256":"2afdaa4d7bdfeca72e5638675134f5e7d27678439439efc15f6ece3b669a0d37","abstract_canon_sha256":"100cca0826df7831aeda1997858ef131fb4fc6623f4513c58b3c9e2f22ab352f"},"schema_version":"1.0"},"canonical_sha256":"bd2f00f1e046c29e08e221fbce5df2bc8b4b0c85fb82c1b4ed9023cad2cbb27a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:07:56.564477Z","signature_b64":"iUR53r351fxHu6Fm6aJUINIXdXV5wFKSArBTmpzSTgohIYSAMh0G6EaAJLZZaj34dxVSQydnG+84IhwtkufkCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bd2f00f1e046c29e08e221fbce5df2bc8b4b0c85fb82c1b4ed9023cad2cbb27a","last_reissued_at":"2026-07-05T03:07:56.563935Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:07:56.563935Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2108.09633","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":"2026-07-05T03:07:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bvUTN6QQZzqDMx+6pb4nX2aHhFhNic+vQ5dS0IyCeLs+OTdN46adnLXweJsjDezjBpHruV/xhekWW7Pk0e6FAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T19:59:48.374077Z"},"content_sha256":"ca519e0c47b89c4a8f7d115f217423524dbd31b3ec6930533d25ed5ea708c5ba","schema_version":"1.0","event_id":"sha256:ca519e0c47b89c4a8f7d115f217423524dbd31b3ec6930533d25ed5ea708c5ba"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:XUXQB4PAI3BJ4CHCEH544XPSXS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observation of near EF Fermi-arc van Hove singularity with prominent coupling to phonon in a van der Waals coupled Weyl semimetal","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","cond-mat.str-el"],"primary_cat":"cond-mat.mes-hall","authors_text":"Cheng-Yi Huang, Chia-Hsiu Hsu, Feng-Chuan Chuang, Hiromasa Namiki, H. Lin, Takao Sasagawa, Tay-Rong Chang, Vidya Madhavan, Yoshinori Okada, Z. Wang","submitted_at":"2021-08-22T04:31:47Z","abstract_excerpt":"A van der Waals coupled Weyl semimetal material NbIrTe4 is investigated by combining scanning tunneling microscopy/spectroscopy and first principles calculations. We observe a sharp peak in the tunneling conductance near the zero bias energy, and its origin is ascribed to a van Hove singularity associated with a Lifshitz transition of the topologically none trivial Fermi arc states. Furthermore, tunneling spectroscopy measurements show a surprisingly large signature of electron boson coupling, which presumably represents anomalously enhanced electron phonon coupling through the enhanced charge"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.09633","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/2108.09633/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":"2026-07-05T03:07:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n3RW0p1vhLnNXJZl6QH2J4NrcN5NpOkkUKrM64LMqFc8YuCicqtVzQIXSc3q4wxvvltGCLZNUk+MtUWQ2LFUBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T19:59:48.374916Z"},"content_sha256":"15add79117b7a0a63113cf0168973ebcd9a66dd79452f2b2a8db15d5b1e98d43","schema_version":"1.0","event_id":"sha256:15add79117b7a0a63113cf0168973ebcd9a66dd79452f2b2a8db15d5b1e98d43"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XUXQB4PAI3BJ4CHCEH544XPSXS/bundle.json","state_url":"https://pith.science/pith/XUXQB4PAI3BJ4CHCEH544XPSXS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XUXQB4PAI3BJ4CHCEH544XPSXS/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":"2026-08-06T19:59:48Z","links":{"resolver":"https://pith.science/pith/XUXQB4PAI3BJ4CHCEH544XPSXS","bundle":"https://pith.science/pith/XUXQB4PAI3BJ4CHCEH544XPSXS/bundle.json","state":"https://pith.science/pith/XUXQB4PAI3BJ4CHCEH544XPSXS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XUXQB4PAI3BJ4CHCEH544XPSXS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:XUXQB4PAI3BJ4CHCEH544XPSXS","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":"100cca0826df7831aeda1997858ef131fb4fc6623f4513c58b3c9e2f22ab352f","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-08-22T04:31:47Z","title_canon_sha256":"2afdaa4d7bdfeca72e5638675134f5e7d27678439439efc15f6ece3b669a0d37"},"schema_version":"1.0","source":{"id":"2108.09633","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.09633","created_at":"2026-07-05T03:07:56Z"},{"alias_kind":"arxiv_version","alias_value":"2108.09633v1","created_at":"2026-07-05T03:07:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.09633","created_at":"2026-07-05T03:07:56Z"},{"alias_kind":"pith_short_12","alias_value":"XUXQB4PAI3BJ","created_at":"2026-07-05T03:07:56Z"},{"alias_kind":"pith_short_16","alias_value":"XUXQB4PAI3BJ4CHC","created_at":"2026-07-05T03:07:56Z"},{"alias_kind":"pith_short_8","alias_value":"XUXQB4PA","created_at":"2026-07-05T03:07:56Z"}],"graph_snapshots":[{"event_id":"sha256:15add79117b7a0a63113cf0168973ebcd9a66dd79452f2b2a8db15d5b1e98d43","target":"graph","created_at":"2026-07-05T03:07:56Z","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/2108.09633/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A van der Waals coupled Weyl semimetal material NbIrTe4 is investigated by combining scanning tunneling microscopy/spectroscopy and first principles calculations. We observe a sharp peak in the tunneling conductance near the zero bias energy, and its origin is ascribed to a van Hove singularity associated with a Lifshitz transition of the topologically none trivial Fermi arc states. Furthermore, tunneling spectroscopy measurements show a surprisingly large signature of electron boson coupling, which presumably represents anomalously enhanced electron phonon coupling through the enhanced charge","authors_text":"Cheng-Yi Huang, Chia-Hsiu Hsu, Feng-Chuan Chuang, Hiromasa Namiki, H. Lin, Takao Sasagawa, Tay-Rong Chang, Vidya Madhavan, Yoshinori Okada, Z. Wang","cross_cats":["cond-mat.mtrl-sci","cond-mat.str-el"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-08-22T04:31:47Z","title":"Observation of near EF Fermi-arc van Hove singularity with prominent coupling to phonon in a van der Waals coupled Weyl semimetal"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.09633","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:ca519e0c47b89c4a8f7d115f217423524dbd31b3ec6930533d25ed5ea708c5ba","target":"record","created_at":"2026-07-05T03:07:56Z","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":"100cca0826df7831aeda1997858ef131fb4fc6623f4513c58b3c9e2f22ab352f","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-08-22T04:31:47Z","title_canon_sha256":"2afdaa4d7bdfeca72e5638675134f5e7d27678439439efc15f6ece3b669a0d37"},"schema_version":"1.0","source":{"id":"2108.09633","kind":"arxiv","version":1}},"canonical_sha256":"bd2f00f1e046c29e08e221fbce5df2bc8b4b0c85fb82c1b4ed9023cad2cbb27a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bd2f00f1e046c29e08e221fbce5df2bc8b4b0c85fb82c1b4ed9023cad2cbb27a","first_computed_at":"2026-07-05T03:07:56.563935Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:07:56.563935Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iUR53r351fxHu6Fm6aJUINIXdXV5wFKSArBTmpzSTgohIYSAMh0G6EaAJLZZaj34dxVSQydnG+84IhwtkufkCA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:07:56.564477Z","signed_message":"canonical_sha256_bytes"},"source_id":"2108.09633","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ca519e0c47b89c4a8f7d115f217423524dbd31b3ec6930533d25ed5ea708c5ba","sha256:15add79117b7a0a63113cf0168973ebcd9a66dd79452f2b2a8db15d5b1e98d43"],"state_sha256":"ec9e6b1ce677d5d93ef30c9228aadbd4877f645f34e0c451ba235397df0dce2f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0UPb2S1X+MhswbhHLBoGJwkqxumIxASYkusjZs+Du7u9Q5gFH6Hy4OZwRTh3rG0k9s/aLGPCpiIybkwmbuZgDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T19:59:48.380814Z","bundle_sha256":"dbe3ea56a93be80e11d7291a1d66f3d9711a8c61914704aeba59dc5bc029cb2c"}}