{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:2CWOWJ4PZQFIUFJ4GHVNOHZ4W7","short_pith_number":"pith:2CWOWJ4P","canonical_record":{"source":{"id":"1512.07065","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-12-22T12:58:30Z","cross_cats_sorted":[],"title_canon_sha256":"edd3637988fe1db843b64aa896dce12b9ce19ce70d87c338d007646915c9d7d0","abstract_canon_sha256":"d7c25e75e81da4b8e93883bf251e60e89c667a9dd23e975b8e94d58e0ae48523"},"schema_version":"1.0"},"canonical_sha256":"d0aceb278fcc0a8a153c31ead71f3cb7e9137938a89ef6108a03896f1d1a41c6","source":{"kind":"arxiv","id":"1512.07065","version":5},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.07065","created_at":"2026-05-18T01:13:15Z"},{"alias_kind":"arxiv_version","alias_value":"1512.07065v5","created_at":"2026-05-18T01:13:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.07065","created_at":"2026-05-18T01:13:15Z"},{"alias_kind":"pith_short_12","alias_value":"2CWOWJ4PZQFI","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"2CWOWJ4PZQFIUFJ4","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"2CWOWJ4P","created_at":"2026-05-18T12:28:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:2CWOWJ4PZQFIUFJ4GHVNOHZ4W7","target":"record","payload":{"canonical_record":{"source":{"id":"1512.07065","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-12-22T12:58:30Z","cross_cats_sorted":[],"title_canon_sha256":"edd3637988fe1db843b64aa896dce12b9ce19ce70d87c338d007646915c9d7d0","abstract_canon_sha256":"d7c25e75e81da4b8e93883bf251e60e89c667a9dd23e975b8e94d58e0ae48523"},"schema_version":"1.0"},"canonical_sha256":"d0aceb278fcc0a8a153c31ead71f3cb7e9137938a89ef6108a03896f1d1a41c6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:13:15.915415Z","signature_b64":"FfQFOedQ80EFyOzoZlYmMOyPATwtCQdrYy+J2ObVk8EqQEosVgi7ZOKDHfHNdds7R10U5f/slAKJ1x5J0TdYCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d0aceb278fcc0a8a153c31ead71f3cb7e9137938a89ef6108a03896f1d1a41c6","last_reissued_at":"2026-05-18T01:13:15.914955Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:13:15.914955Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.07065","source_version":5,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:13:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7UvxZhiobMt758qg4JX6tfBWJhEee2hqseral0K1cCPmgmkUea5CM5MTfgS4RPKfJY9PLDqtqqycaaAbmzrmDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T06:22:46.505653Z"},"content_sha256":"b06630e92bd106f007ca2c928cc122db04fc550c4bb3c225e66ac2b7ce93bbe6","schema_version":"1.0","event_id":"sha256:b06630e92bd106f007ca2c928cc122db04fc550c4bb3c225e66ac2b7ce93bbe6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:2CWOWJ4PZQFIUFJ4GHVNOHZ4W7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Non-adiabatic effects in the phonon dispersion of Mg 1--x Al x B 2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"Alexei Bossak (ESRF), Burkhard Renker, De La Pena Seaman Omar (IFUAP-BUAP), Frank Weber, Helmut Schober (ILL), Janusz Karpinski (ETH Zurich), Matteo D'Astuto (IMPMC), Michael Krisch (ESRF), Nikolai D. Zhigadlo (ETH Zurich), Rolf Heid","submitted_at":"2015-12-22T12:58:30Z","abstract_excerpt":"Superconducting MgB$\\_2$ shows an E$\\_{2g}$ zone center phonon, as measured by Raman spectroscopy, that is very broad in energy and temperature dependent. The Raman shift and lifetime show large differences with the values elsewhere in the Brillouin Zone measured by Inelastic X-ray Scattering (IXS), where its dispersion can be accounted for by standard harmonic phonon theory, adding only a moderate electron-phonon coupling. Here we show that the effects rapidly disappear when electron-phonon coupling is switched off by Al substitution on the Mg sites. Moreover, using IXS with very high wave-ve"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.07065","kind":"arxiv","version":5},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T01:13:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hHtTxV6y04iORl3J6YrVwfg6KOL3hgBWsuoun4gX1WeHTyouJocQ1QVSw04AB5i1PcNOxUdjjQuFi0hR6iYIBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T06:22:46.506002Z"},"content_sha256":"2f025061891801a6cb0c3d2366fb08a8c13aaff40923a1793a16c1aa8c927138","schema_version":"1.0","event_id":"sha256:2f025061891801a6cb0c3d2366fb08a8c13aaff40923a1793a16c1aa8c927138"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2CWOWJ4PZQFIUFJ4GHVNOHZ4W7/bundle.json","state_url":"https://pith.science/pith/2CWOWJ4PZQFIUFJ4GHVNOHZ4W7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2CWOWJ4PZQFIUFJ4GHVNOHZ4W7/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":"2026-06-26T06:22:46Z","links":{"resolver":"https://pith.science/pith/2CWOWJ4PZQFIUFJ4GHVNOHZ4W7","bundle":"https://pith.science/pith/2CWOWJ4PZQFIUFJ4GHVNOHZ4W7/bundle.json","state":"https://pith.science/pith/2CWOWJ4PZQFIUFJ4GHVNOHZ4W7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2CWOWJ4PZQFIUFJ4GHVNOHZ4W7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:2CWOWJ4PZQFIUFJ4GHVNOHZ4W7","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":"d7c25e75e81da4b8e93883bf251e60e89c667a9dd23e975b8e94d58e0ae48523","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-12-22T12:58:30Z","title_canon_sha256":"edd3637988fe1db843b64aa896dce12b9ce19ce70d87c338d007646915c9d7d0"},"schema_version":"1.0","source":{"id":"1512.07065","kind":"arxiv","version":5}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.07065","created_at":"2026-05-18T01:13:15Z"},{"alias_kind":"arxiv_version","alias_value":"1512.07065v5","created_at":"2026-05-18T01:13:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.07065","created_at":"2026-05-18T01:13:15Z"},{"alias_kind":"pith_short_12","alias_value":"2CWOWJ4PZQFI","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"2CWOWJ4PZQFIUFJ4","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"2CWOWJ4P","created_at":"2026-05-18T12:28:59Z"}],"graph_snapshots":[{"event_id":"sha256:2f025061891801a6cb0c3d2366fb08a8c13aaff40923a1793a16c1aa8c927138","target":"graph","created_at":"2026-05-18T01:13:15Z","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":"Superconducting MgB$\\_2$ shows an E$\\_{2g}$ zone center phonon, as measured by Raman spectroscopy, that is very broad in energy and temperature dependent. The Raman shift and lifetime show large differences with the values elsewhere in the Brillouin Zone measured by Inelastic X-ray Scattering (IXS), where its dispersion can be accounted for by standard harmonic phonon theory, adding only a moderate electron-phonon coupling. Here we show that the effects rapidly disappear when electron-phonon coupling is switched off by Al substitution on the Mg sites. Moreover, using IXS with very high wave-ve","authors_text":"Alexei Bossak (ESRF), Burkhard Renker, De La Pena Seaman Omar (IFUAP-BUAP), Frank Weber, Helmut Schober (ILL), Janusz Karpinski (ETH Zurich), Matteo D'Astuto (IMPMC), Michael Krisch (ESRF), Nikolai D. Zhigadlo (ETH Zurich), Rolf Heid","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-12-22T12:58:30Z","title":"Non-adiabatic effects in the phonon dispersion of Mg 1--x Al x B 2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.07065","kind":"arxiv","version":5},"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:b06630e92bd106f007ca2c928cc122db04fc550c4bb3c225e66ac2b7ce93bbe6","target":"record","created_at":"2026-05-18T01:13:15Z","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":"d7c25e75e81da4b8e93883bf251e60e89c667a9dd23e975b8e94d58e0ae48523","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-12-22T12:58:30Z","title_canon_sha256":"edd3637988fe1db843b64aa896dce12b9ce19ce70d87c338d007646915c9d7d0"},"schema_version":"1.0","source":{"id":"1512.07065","kind":"arxiv","version":5}},"canonical_sha256":"d0aceb278fcc0a8a153c31ead71f3cb7e9137938a89ef6108a03896f1d1a41c6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d0aceb278fcc0a8a153c31ead71f3cb7e9137938a89ef6108a03896f1d1a41c6","first_computed_at":"2026-05-18T01:13:15.914955Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:13:15.914955Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FfQFOedQ80EFyOzoZlYmMOyPATwtCQdrYy+J2ObVk8EqQEosVgi7ZOKDHfHNdds7R10U5f/slAKJ1x5J0TdYCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:13:15.915415Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.07065","source_kind":"arxiv","source_version":5}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b06630e92bd106f007ca2c928cc122db04fc550c4bb3c225e66ac2b7ce93bbe6","sha256:2f025061891801a6cb0c3d2366fb08a8c13aaff40923a1793a16c1aa8c927138"],"state_sha256":"f470cc692d133e459d831d6ff37861ca7860a3eb8964a5c63b166b949b478616"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3CtzbFo3pIg/aKORfrpHmJ7sD1uWObPO5Z8HbEjzA3IBWGudBe2A5m5SGMgOh5w8rniUdahq1kl0uLm8hxWWAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T06:22:46.507968Z","bundle_sha256":"c790a1a47def29ac78c2290c95ebbd941edaa617f54b3b7ffdd5a893e62af30f"}}