{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:BANCDAEOM5OFRNZLECYFK5JEHL","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":"aabe9d4c8f558be5c01b88e2874cdf76315024f4ad6d46334cfe06287c828c71","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-05-09T15:19:09Z","title_canon_sha256":"616fe758a4223df5fbd9e32d9951cfc8b8c9c1bae156a4be177546ee22563bb8"},"schema_version":"1.0","source":{"id":"1805.03529","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.03529","created_at":"2026-05-18T00:16:19Z"},{"alias_kind":"arxiv_version","alias_value":"1805.03529v1","created_at":"2026-05-18T00:16:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.03529","created_at":"2026-05-18T00:16:19Z"},{"alias_kind":"pith_short_12","alias_value":"BANCDAEOM5OF","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"BANCDAEOM5OFRNZL","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"BANCDAEO","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:7f282c96cba2af239b122b167db0cda133774055b3e83934f98f5e79d681482e","target":"graph","created_at":"2026-05-18T00:16:19Z","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 have conducted temperature dependent Angle Resolved Photoemission Spectroscopy (ARPES) study of the electronic structures of PbTe, PbSe and PbS. Our ARPES data provide direct evidence for the \\emph{light} hole upper valence bands (UVBs) and hitherto undetected \\emph{heavy} hole lower valence bands (LVBs) in these materials. An unusual temperature dependent relative movement between these bands leads to a monotonic decrease in the energy separation between their maxima with increasing temperature, which is referred as band convergence and has long been believed to be the driving factor behin","authors_text":"C. D. Malliakas, D. Y. Chung, J. Zhao, K. Wijayaratne, M. G. Kanatzidis, N. Appathurai, S. Rosenkranz, U. Chatterjee, V. Karlapati","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-05-09T15:19:09Z","title":"Spectroscopic evidence for temperature-dependent convergence of light and heavy hole valence bands of PbQ (Q=Te, Se, S)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.03529","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":"sha256:11aa3cde5a01dd3642b2ba225238f2d071ac13c6d4c1608d414fe9241ded6fc7","target":"record","created_at":"2026-05-18T00:16:19Z","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":"aabe9d4c8f558be5c01b88e2874cdf76315024f4ad6d46334cfe06287c828c71","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-05-09T15:19:09Z","title_canon_sha256":"616fe758a4223df5fbd9e32d9951cfc8b8c9c1bae156a4be177546ee22563bb8"},"schema_version":"1.0","source":{"id":"1805.03529","kind":"arxiv","version":1}},"canonical_sha256":"081a21808e675c58b72b20b05575243ae8e5cb20182c05edefb5b522ae20d127","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"081a21808e675c58b72b20b05575243ae8e5cb20182c05edefb5b522ae20d127","first_computed_at":"2026-05-18T00:16:19.949161Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:16:19.949161Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"remZuL63Hd/Q2ffryxHn2aVC56jh49kdIuj/Q8VttAjYNlBvm70TI3gZSj1u3gLPqkM9KX4+ynPEJ+KQhcwyAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:16:19.949607Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.03529","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:11aa3cde5a01dd3642b2ba225238f2d071ac13c6d4c1608d414fe9241ded6fc7","sha256:7f282c96cba2af239b122b167db0cda133774055b3e83934f98f5e79d681482e"],"state_sha256":"dc239be43d8457c8e4c31b5fa2b69ba74884030be4e4c548d91aec268ff47dd3"}