{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:QMNKMKCVJ7MA75O5C32XSV6JJT","short_pith_number":"pith:QMNKMKCV","canonical_record":{"source":{"id":"2508.19248","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-08-26T17:59:57Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"4625266ae7070f9a7d0ee9c903ea3ea2f6546888b400842f2d1b1d09ddba2d5b","abstract_canon_sha256":"ddcc8ee08bcf585528a44ef8731a1c1924ce51a5dbfd0f2e69e35ee8e11ddc4e"},"schema_version":"1.0"},"canonical_sha256":"831aa628554fd80ff5dd16f57957c94cfff82b8e2d003c5979a1a9d08a87a157","source":{"kind":"arxiv","id":"2508.19248","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.19248","created_at":"2026-05-28T01:04:29Z"},{"alias_kind":"arxiv_version","alias_value":"2508.19248v4","created_at":"2026-05-28T01:04:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.19248","created_at":"2026-05-28T01:04:29Z"},{"alias_kind":"pith_short_12","alias_value":"QMNKMKCVJ7MA","created_at":"2026-05-28T01:04:29Z"},{"alias_kind":"pith_short_16","alias_value":"QMNKMKCVJ7MA75O5","created_at":"2026-05-28T01:04:29Z"},{"alias_kind":"pith_short_8","alias_value":"QMNKMKCV","created_at":"2026-05-28T01:04:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:QMNKMKCVJ7MA75O5C32XSV6JJT","target":"record","payload":{"canonical_record":{"source":{"id":"2508.19248","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-08-26T17:59:57Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"4625266ae7070f9a7d0ee9c903ea3ea2f6546888b400842f2d1b1d09ddba2d5b","abstract_canon_sha256":"ddcc8ee08bcf585528a44ef8731a1c1924ce51a5dbfd0f2e69e35ee8e11ddc4e"},"schema_version":"1.0"},"canonical_sha256":"831aa628554fd80ff5dd16f57957c94cfff82b8e2d003c5979a1a9d08a87a157","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-28T01:04:29.887847Z","signature_b64":"L6F9auxBPdPel3wJ8UMsYm0GNehiQARA19NlHAaPowE70e1+9KFgwERDADnzaNhj9AO/nJmN1r5fX7IFr3F8BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"831aa628554fd80ff5dd16f57957c94cfff82b8e2d003c5979a1a9d08a87a157","last_reissued_at":"2026-05-28T01:04:29.886955Z","signature_status":"signed_v1","first_computed_at":"2026-05-28T01:04:29.886955Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2508.19248","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-28T01:04:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DaJVkVSfD6DiTkUV7JXYwvA/Nr+5UAYiTZ9nAZXsFIf1O0vqaLnTBvCrLqIbQB2orm6ZXf1gn2wSwKVcWUFzAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T22:11:45.864563Z"},"content_sha256":"fec5bf5d784b0a1553cfafd10311f76ea03bfa52a21164f44b5b6822a35ca1e0","schema_version":"1.0","event_id":"sha256:fec5bf5d784b0a1553cfafd10311f76ea03bfa52a21164f44b5b6822a35ca1e0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:QMNKMKCVJ7MA75O5C32XSV6JJT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Disorder-induced proximate quantum spin ice phase in Pr2Sn2O7","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"In Pr2Sn2O7, disorder induces spin freezing at 0.15 K while quantum spin-ice correlations persist down to low temperatures.","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.str-el","authors_text":"Adam A. Aczel, Andrey A. Podlesnyak, Benjamin A. Frandsen, Brenden R. Ortiz, Joseph A. M. Paddison, Jue Liu, Matthias D. Frontzek, Miles Knudtson, Si Athena Chen, Stephen D. Wilson, Yi Luo","submitted_at":"2025-08-26T17:59:57Z","abstract_excerpt":"Magnetic pyrochlores with non-Kramers rare-earth ions provide a platform for exploring emergent gauge physics and quantum spin-ice behavior, yet the influence of structural disorder on their ground states remains insufficiently understood. Here we combine bulk characterization and single-crystal neutron-scattering measurements to investigate the non-Kramers pyrochlore Pr2Sn2O7. At temperatures below ~1 K, the system exhibits key hallmarks of quantum spin-ice physics, including anisotropic spin-ice correlations and two distinct dynamical timescales. Upon further cooling, however, we observe a c"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"These results establish a disorder-driven framework for how quantum spin-ice behavior evolves into frozen ground states, demonstrating that proximity to a quantum spin liquid can coexist with disorder-induced spin freezing in non-Kramers pyrochlores.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The interpretation that the observed spin freezing at 0.15 K is primarily disorder-induced rests on the comparison with related Pr-based pyrochlores and the placement near the spin-frozen boundary of a disorder-perturbed phase diagram (abstract, final paragraph).","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Pr2Sn2O7 displays quantum spin-ice hallmarks below ~1 K but freezes at T_f ~0.15 K with recovered Schottky anomaly and gapped excitations, placing it near the spin-frozen boundary in a disorder-perturbed phase diagram.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"In Pr2Sn2O7, disorder induces spin freezing at 0.15 K while quantum spin-ice correlations persist down to low temperatures.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"1dc840efd10a1f900b94579a002951c56a9979f8fb8f4f9f5f607fb5c5519f6a"},"source":{"id":"2508.19248","kind":"arxiv","version":4},"verdict":{"id":"c0e9291a-c098-4991-8c2d-62212c5f9996","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-18T20:36:01.118661Z","strongest_claim":"These results establish a disorder-driven framework for how quantum spin-ice behavior evolves into frozen ground states, demonstrating that proximity to a quantum spin liquid can coexist with disorder-induced spin freezing in non-Kramers pyrochlores.","one_line_summary":"Pr2Sn2O7 displays quantum spin-ice hallmarks below ~1 K but freezes at T_f ~0.15 K with recovered Schottky anomaly and gapped excitations, placing it near the spin-frozen boundary in a disorder-perturbed phase diagram.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The interpretation that the observed spin freezing at 0.15 K is primarily disorder-induced rests on the comparison with related Pr-based pyrochlores and the placement near the spin-frozen boundary of a disorder-perturbed phase diagram (abstract, final paragraph).","pith_extraction_headline":"In Pr2Sn2O7, disorder induces spin freezing at 0.15 K while quantum spin-ice correlations persist down to low temperatures."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2508.19248/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":2,"snapshot_sha256":"c5c7869be9297895ba26f70bc8a453a3cef0aa44a4de54f0852dc98618083abf"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":"c0e9291a-c098-4991-8c2d-62212c5f9996"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-28T01:04:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ELHK7kEk0O2UNPwq8Q4rzjwCCjzDDzh3Zx+kh2bghGTGK1QhWE8oIMOevX4RQrWgA/P3zlkq+gQr59JyAZ4GAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T22:11:45.865492Z"},"content_sha256":"e4a64b3c62ba5d753f0d12825a01a9f75f8a95ff9f7e7dcab71d2911267668d1","schema_version":"1.0","event_id":"sha256:e4a64b3c62ba5d753f0d12825a01a9f75f8a95ff9f7e7dcab71d2911267668d1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QMNKMKCVJ7MA75O5C32XSV6JJT/bundle.json","state_url":"https://pith.science/pith/QMNKMKCVJ7MA75O5C32XSV6JJT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QMNKMKCVJ7MA75O5C32XSV6JJT/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":"2026-06-05T22:11:45Z","links":{"resolver":"https://pith.science/pith/QMNKMKCVJ7MA75O5C32XSV6JJT","bundle":"https://pith.science/pith/QMNKMKCVJ7MA75O5C32XSV6JJT/bundle.json","state":"https://pith.science/pith/QMNKMKCVJ7MA75O5C32XSV6JJT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QMNKMKCVJ7MA75O5C32XSV6JJT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:QMNKMKCVJ7MA75O5C32XSV6JJT","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":"ddcc8ee08bcf585528a44ef8731a1c1924ce51a5dbfd0f2e69e35ee8e11ddc4e","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-08-26T17:59:57Z","title_canon_sha256":"4625266ae7070f9a7d0ee9c903ea3ea2f6546888b400842f2d1b1d09ddba2d5b"},"schema_version":"1.0","source":{"id":"2508.19248","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.19248","created_at":"2026-05-28T01:04:29Z"},{"alias_kind":"arxiv_version","alias_value":"2508.19248v4","created_at":"2026-05-28T01:04:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.19248","created_at":"2026-05-28T01:04:29Z"},{"alias_kind":"pith_short_12","alias_value":"QMNKMKCVJ7MA","created_at":"2026-05-28T01:04:29Z"},{"alias_kind":"pith_short_16","alias_value":"QMNKMKCVJ7MA75O5","created_at":"2026-05-28T01:04:29Z"},{"alias_kind":"pith_short_8","alias_value":"QMNKMKCV","created_at":"2026-05-28T01:04:29Z"}],"graph_snapshots":[{"event_id":"sha256:e4a64b3c62ba5d753f0d12825a01a9f75f8a95ff9f7e7dcab71d2911267668d1","target":"graph","created_at":"2026-05-28T01:04:29Z","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":4,"items":[{"attestation":"unclaimed","claim_id":"C1","kind":"strongest_claim","source":"verdict.strongest_claim","status":"machine_extracted","text":"These results establish a disorder-driven framework for how quantum spin-ice behavior evolves into frozen ground states, demonstrating that proximity to a quantum spin liquid can coexist with disorder-induced spin freezing in non-Kramers pyrochlores."},{"attestation":"unclaimed","claim_id":"C2","kind":"weakest_assumption","source":"verdict.weakest_assumption","status":"machine_extracted","text":"The interpretation that the observed spin freezing at 0.15 K is primarily disorder-induced rests on the comparison with related Pr-based pyrochlores and the placement near the spin-frozen boundary of a disorder-perturbed phase diagram (abstract, final paragraph)."},{"attestation":"unclaimed","claim_id":"C3","kind":"one_line_summary","source":"verdict.one_line_summary","status":"machine_extracted","text":"Pr2Sn2O7 displays quantum spin-ice hallmarks below ~1 K but freezes at T_f ~0.15 K with recovered Schottky anomaly and gapped excitations, placing it near the spin-frozen boundary in a disorder-perturbed phase diagram."},{"attestation":"unclaimed","claim_id":"C4","kind":"headline","source":"verdict.pith_extraction.headline","status":"machine_extracted","text":"In Pr2Sn2O7, disorder induces spin freezing at 0.15 K while quantum spin-ice correlations persist down to low temperatures."}],"snapshot_sha256":"1dc840efd10a1f900b94579a002951c56a9979f8fb8f4f9f5f607fb5c5519f6a"},"formal_canon":{"evidence_count":2,"snapshot_sha256":"c5c7869be9297895ba26f70bc8a453a3cef0aa44a4de54f0852dc98618083abf"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2508.19248/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Magnetic pyrochlores with non-Kramers rare-earth ions provide a platform for exploring emergent gauge physics and quantum spin-ice behavior, yet the influence of structural disorder on their ground states remains insufficiently understood. Here we combine bulk characterization and single-crystal neutron-scattering measurements to investigate the non-Kramers pyrochlore Pr2Sn2O7. At temperatures below ~1 K, the system exhibits key hallmarks of quantum spin-ice physics, including anisotropic spin-ice correlations and two distinct dynamical timescales. Upon further cooling, however, we observe a c","authors_text":"Adam A. Aczel, Andrey A. Podlesnyak, Benjamin A. Frandsen, Brenden R. Ortiz, Joseph A. M. Paddison, Jue Liu, Matthias D. Frontzek, Miles Knudtson, Si Athena Chen, Stephen D. Wilson, Yi Luo","cross_cats":["cond-mat.mtrl-sci"],"headline":"In Pr2Sn2O7, disorder induces spin freezing at 0.15 K while quantum spin-ice correlations persist down to low temperatures.","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-08-26T17:59:57Z","title":"Disorder-induced proximate quantum spin ice phase in Pr2Sn2O7"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.19248","kind":"arxiv","version":4},"verdict":{"created_at":"2026-05-18T20:36:01.118661Z","id":"c0e9291a-c098-4991-8c2d-62212c5f9996","model_set":{"reader":"grok-4.3"},"one_line_summary":"Pr2Sn2O7 displays quantum spin-ice hallmarks below ~1 K but freezes at T_f ~0.15 K with recovered Schottky anomaly and gapped excitations, placing it near the spin-frozen boundary in a disorder-perturbed phase diagram.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"In Pr2Sn2O7, disorder induces spin freezing at 0.15 K while quantum spin-ice correlations persist down to low temperatures.","strongest_claim":"These results establish a disorder-driven framework for how quantum spin-ice behavior evolves into frozen ground states, demonstrating that proximity to a quantum spin liquid can coexist with disorder-induced spin freezing in non-Kramers pyrochlores.","weakest_assumption":"The interpretation that the observed spin freezing at 0.15 K is primarily disorder-induced rests on the comparison with related Pr-based pyrochlores and the placement near the spin-frozen boundary of a disorder-perturbed phase diagram (abstract, final paragraph)."}},"verdict_id":"c0e9291a-c098-4991-8c2d-62212c5f9996"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:fec5bf5d784b0a1553cfafd10311f76ea03bfa52a21164f44b5b6822a35ca1e0","target":"record","created_at":"2026-05-28T01:04:29Z","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":"ddcc8ee08bcf585528a44ef8731a1c1924ce51a5dbfd0f2e69e35ee8e11ddc4e","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2025-08-26T17:59:57Z","title_canon_sha256":"4625266ae7070f9a7d0ee9c903ea3ea2f6546888b400842f2d1b1d09ddba2d5b"},"schema_version":"1.0","source":{"id":"2508.19248","kind":"arxiv","version":4}},"canonical_sha256":"831aa628554fd80ff5dd16f57957c94cfff82b8e2d003c5979a1a9d08a87a157","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"831aa628554fd80ff5dd16f57957c94cfff82b8e2d003c5979a1a9d08a87a157","first_computed_at":"2026-05-28T01:04:29.886955Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-28T01:04:29.886955Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"L6F9auxBPdPel3wJ8UMsYm0GNehiQARA19NlHAaPowE70e1+9KFgwERDADnzaNhj9AO/nJmN1r5fX7IFr3F8BQ==","signature_status":"signed_v1","signed_at":"2026-05-28T01:04:29.887847Z","signed_message":"canonical_sha256_bytes"},"source_id":"2508.19248","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fec5bf5d784b0a1553cfafd10311f76ea03bfa52a21164f44b5b6822a35ca1e0","sha256:e4a64b3c62ba5d753f0d12825a01a9f75f8a95ff9f7e7dcab71d2911267668d1"],"state_sha256":"3a9fcda31813090ff16de4f11aa0ba167aa2c4c1244b08c1a7c2d83dc60069d7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fhlOozF4iygzl6/c+wbT69XFjxereitShvcwtcgYqz37+XzoyeUUnLtTUem9eofpUyPTPxDIB33xoBJQD/gMCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T22:11:45.870539Z","bundle_sha256":"0efc81c3d4e1dd04344db40646432ef564cbf130a62fcc635241af3feb2717fb"}}