{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:SCIJICAB3EVGCTTPWJSQW4FBEH","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":"16de3190129f23f16295f647e50f0a9f3bf7232eaa52632e26111ffd51906deb","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2020-10-10T14:59:10Z","title_canon_sha256":"04e7a1b679ce7523e465ac42b951b9f2c0c2b9ac9011afa79a9919e9ac347781"},"schema_version":"1.0","source":{"id":"2010.05019","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.05019","created_at":"2026-07-05T03:26:37Z"},{"alias_kind":"arxiv_version","alias_value":"2010.05019v2","created_at":"2026-07-05T03:26:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.05019","created_at":"2026-07-05T03:26:37Z"},{"alias_kind":"pith_short_12","alias_value":"SCIJICAB3EVG","created_at":"2026-07-05T03:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"SCIJICAB3EVGCTTP","created_at":"2026-07-05T03:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"SCIJICAB","created_at":"2026-07-05T03:26:37Z"}],"graph_snapshots":[{"event_id":"sha256:10486a49289fc4622e6a9241880c714246a85fd380d3164a276fd157fba3f6a5","target":"graph","created_at":"2026-07-05T03:26:37Z","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/2010.05019/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on time-resolved linear and nonlinear terahertz spectroscopy of the two-band superconductor MgB$_2$ with the superconducting transition temperature $T_c \\approx 36$ K. Third-harmonic generation (THG) is observed below $T_c$ by driving the system with intense narrowband THz pulses. For the pump-pulse frequencies $f=$ 0.3, 0.4, and 0.5 THz, temperature-dependent evolution of the THG signals exhibits a resonance maximum at the temperatures with the resonance conditions $2f=2\\Delta_\\pi(T)$ fulfilled, for the dirty-limit superconducting gap $2\\Delta_\\pi$. In contrast, for $f=$ 0.6 and 0.7","authors_text":"Chris Reinhoffer, Dong Wu, Hong-Zhang Wang, Igor Ilyakov, Jan-Christoph Deinert, Jure Demsar, Li-Yu Shi, Nan-Lin Wang, Paul H. M. van Loosdrecht, Semyon Germanskiy, Sergey Kovalev, Tao Dong, Tie-Quan Xu, Yue Wang, Zhe Wang, Zi-Zhao Gan","cross_cats":["cond-mat.mtrl-sci","cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2020-10-10T14:59:10Z","title":"Band-selective third-harmonic generation in superconducting MgB$_2$: Possible evidence for Higgs amplitude mode in the dirty limit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.05019","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":"sha256:68172fb7dde1e489264436fec1a8ad99c1dce012959646b8270587a4dc9d4320","target":"record","created_at":"2026-07-05T03:26:37Z","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":"16de3190129f23f16295f647e50f0a9f3bf7232eaa52632e26111ffd51906deb","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2020-10-10T14:59:10Z","title_canon_sha256":"04e7a1b679ce7523e465ac42b951b9f2c0c2b9ac9011afa79a9919e9ac347781"},"schema_version":"1.0","source":{"id":"2010.05019","kind":"arxiv","version":2}},"canonical_sha256":"9090940801d92a614e6fb2650b70a121c868a928685f33ee7acca749ed2f16d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9090940801d92a614e6fb2650b70a121c868a928685f33ee7acca749ed2f16d3","first_computed_at":"2026-07-05T03:26:37.585539Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:26:37.585539Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Vc0dA1cr+O6B+e3p/GNQ67gbm1I/NDCJun2OUb82nr72txw/5hcP0drjDyBAn1YsPHD3pY7tqgd3JPAfe28kDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:26:37.586714Z","signed_message":"canonical_sha256_bytes"},"source_id":"2010.05019","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:68172fb7dde1e489264436fec1a8ad99c1dce012959646b8270587a4dc9d4320","sha256:10486a49289fc4622e6a9241880c714246a85fd380d3164a276fd157fba3f6a5"],"state_sha256":"94ed1d386796d2a37d409cca050941c534c17bc5549e0aad81f09d05df0f63dd"}