{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:I3KIZNPPORDNXE6HOAG3FQMONS","short_pith_number":"pith:I3KIZNPP","canonical_record":{"source":{"id":"1703.08451","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-03-24T15:06:46Z","cross_cats_sorted":[],"title_canon_sha256":"16bc98d3057a797a0b0dcfbb3282068eef786c8a80e1e6902a58cce88a673615","abstract_canon_sha256":"7e45407b722ba7554d86483e97df1709bad31062b0c38fdecc4c6c2423454275"},"schema_version":"1.0"},"canonical_sha256":"46d48cb5ef7446db93c7700db2c18e6cb18d29bdcc47ac982ef0893054bc58bd","source":{"kind":"arxiv","id":"1703.08451","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.08451","created_at":"2026-05-18T00:45:41Z"},{"alias_kind":"arxiv_version","alias_value":"1703.08451v1","created_at":"2026-05-18T00:45:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.08451","created_at":"2026-05-18T00:45:41Z"},{"alias_kind":"pith_short_12","alias_value":"I3KIZNPPORDN","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"I3KIZNPPORDNXE6H","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"I3KIZNPP","created_at":"2026-05-18T12:31:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:I3KIZNPPORDNXE6HOAG3FQMONS","target":"record","payload":{"canonical_record":{"source":{"id":"1703.08451","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-03-24T15:06:46Z","cross_cats_sorted":[],"title_canon_sha256":"16bc98d3057a797a0b0dcfbb3282068eef786c8a80e1e6902a58cce88a673615","abstract_canon_sha256":"7e45407b722ba7554d86483e97df1709bad31062b0c38fdecc4c6c2423454275"},"schema_version":"1.0"},"canonical_sha256":"46d48cb5ef7446db93c7700db2c18e6cb18d29bdcc47ac982ef0893054bc58bd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:45:41.099746Z","signature_b64":"bU8FThpWoLEp5nRq+Yb8bSvn6bzkUiAh+e4EcJr4ZKOumlxBk7QUSF+cCmURKO4TKj6db8mIEI1K2WBL6rsYCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"46d48cb5ef7446db93c7700db2c18e6cb18d29bdcc47ac982ef0893054bc58bd","last_reissued_at":"2026-05-18T00:45:41.099241Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:45:41.099241Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.08451","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":"2026-05-18T00:45:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rW5oaGs4mjUQHEM4nin0H2PqJlARnuzK003+DdxYvlVyjdZLgrUMSmFvZ7YfQMxJJZq02anQ0CrS1wBDJVPgCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T19:20:58.878525Z"},"content_sha256":"75c15ba8a07fdfa1a894e265ff08b40c04875e8f2c898b160bd43690119267fa","schema_version":"1.0","event_id":"sha256:75c15ba8a07fdfa1a894e265ff08b40c04875e8f2c898b160bd43690119267fa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:I3KIZNPPORDNXE6HOAG3FQMONS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An Inelastic X-Ray investigation of the Ferroelectric Transition in SnTe","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"2), (2) Max-Planck-Institut f\\\"ur Chemische Physik fester Stoffe, (3) ID28, Alexei Bossak (3), Andreas Hermann (1), Andrew D. Huxley (1). ((1) School of Physics, Astronomy, Christopher D. ONeill (1), Christopher Stock (1), CSEC, Dmitry A. Sokolov (1, Dresden, Edinburgh, European Synchrotron Radiation Facility, France), Germany, Grenoble, UK, University of Edinburgh","submitted_at":"2017-03-24T15:06:46Z","abstract_excerpt":"We report that the lowest energy transverse-optic phonon in metallic SnTe softens to near zero energy at the structural transition at $T_C=75 \\text{~K}$ and importantly show that the energy of this mode below $T_C$ increases as the temperature decreases. Since the mode is a polar displacement this proves unambiguously that SnTe undergoes a ferroelectric displacement below $T_C$. Concentration gradients and imperfect stoichiometry in large crystals may explain why this was not seen in previous inelastic neutron scattering studies. Despite SnTe being metallic we find that the ferroelectric trans"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.08451","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":""},"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":"2026-05-18T00:45:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+5Bi6nxOb7Ig+4OkF2j6gIUkBu1CUkrbCedvGshesxgqIWjjn0bXBG/9IZCQkKJTtZTjmp/bQDLPzxoSx0Z9AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T19:20:58.879209Z"},"content_sha256":"487fc389421962ce8978b2e3bbd8241d7cb913998d38475797588201a8d89813","schema_version":"1.0","event_id":"sha256:487fc389421962ce8978b2e3bbd8241d7cb913998d38475797588201a8d89813"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/I3KIZNPPORDNXE6HOAG3FQMONS/bundle.json","state_url":"https://pith.science/pith/I3KIZNPPORDNXE6HOAG3FQMONS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/I3KIZNPPORDNXE6HOAG3FQMONS/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":"2026-05-26T19:20:58Z","links":{"resolver":"https://pith.science/pith/I3KIZNPPORDNXE6HOAG3FQMONS","bundle":"https://pith.science/pith/I3KIZNPPORDNXE6HOAG3FQMONS/bundle.json","state":"https://pith.science/pith/I3KIZNPPORDNXE6HOAG3FQMONS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/I3KIZNPPORDNXE6HOAG3FQMONS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:I3KIZNPPORDNXE6HOAG3FQMONS","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":"7e45407b722ba7554d86483e97df1709bad31062b0c38fdecc4c6c2423454275","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-03-24T15:06:46Z","title_canon_sha256":"16bc98d3057a797a0b0dcfbb3282068eef786c8a80e1e6902a58cce88a673615"},"schema_version":"1.0","source":{"id":"1703.08451","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.08451","created_at":"2026-05-18T00:45:41Z"},{"alias_kind":"arxiv_version","alias_value":"1703.08451v1","created_at":"2026-05-18T00:45:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.08451","created_at":"2026-05-18T00:45:41Z"},{"alias_kind":"pith_short_12","alias_value":"I3KIZNPPORDN","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"I3KIZNPPORDNXE6H","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"I3KIZNPP","created_at":"2026-05-18T12:31:21Z"}],"graph_snapshots":[{"event_id":"sha256:487fc389421962ce8978b2e3bbd8241d7cb913998d38475797588201a8d89813","target":"graph","created_at":"2026-05-18T00:45:41Z","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 report that the lowest energy transverse-optic phonon in metallic SnTe softens to near zero energy at the structural transition at $T_C=75 \\text{~K}$ and importantly show that the energy of this mode below $T_C$ increases as the temperature decreases. Since the mode is a polar displacement this proves unambiguously that SnTe undergoes a ferroelectric displacement below $T_C$. Concentration gradients and imperfect stoichiometry in large crystals may explain why this was not seen in previous inelastic neutron scattering studies. Despite SnTe being metallic we find that the ferroelectric trans","authors_text":"2), (2) Max-Planck-Institut f\\\"ur Chemische Physik fester Stoffe, (3) ID28, Alexei Bossak (3), Andreas Hermann (1), Andrew D. Huxley (1). ((1) School of Physics, Astronomy, Christopher D. ONeill (1), Christopher Stock (1), CSEC, Dmitry A. Sokolov (1, Dresden, Edinburgh, European Synchrotron Radiation Facility, France), Germany, Grenoble, UK, University of Edinburgh","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-03-24T15:06:46Z","title":"An Inelastic X-Ray investigation of the Ferroelectric Transition in SnTe"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.08451","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":"sha256:75c15ba8a07fdfa1a894e265ff08b40c04875e8f2c898b160bd43690119267fa","target":"record","created_at":"2026-05-18T00:45:41Z","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":"7e45407b722ba7554d86483e97df1709bad31062b0c38fdecc4c6c2423454275","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-03-24T15:06:46Z","title_canon_sha256":"16bc98d3057a797a0b0dcfbb3282068eef786c8a80e1e6902a58cce88a673615"},"schema_version":"1.0","source":{"id":"1703.08451","kind":"arxiv","version":1}},"canonical_sha256":"46d48cb5ef7446db93c7700db2c18e6cb18d29bdcc47ac982ef0893054bc58bd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"46d48cb5ef7446db93c7700db2c18e6cb18d29bdcc47ac982ef0893054bc58bd","first_computed_at":"2026-05-18T00:45:41.099241Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:45:41.099241Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bU8FThpWoLEp5nRq+Yb8bSvn6bzkUiAh+e4EcJr4ZKOumlxBk7QUSF+cCmURKO4TKj6db8mIEI1K2WBL6rsYCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:45:41.099746Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.08451","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:75c15ba8a07fdfa1a894e265ff08b40c04875e8f2c898b160bd43690119267fa","sha256:487fc389421962ce8978b2e3bbd8241d7cb913998d38475797588201a8d89813"],"state_sha256":"048bc7743c79ed866bd8db16a9c9d961b09f0faf4e586c12682584f3dae01fb1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3R6ECmPMnBNZvl+DBBe25f0Tx4AphuAg3CzmqdeDhP97cMB0Zlr7Hj1scpPTkxTvZn2BitnrHqdu+JddSDliAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T19:20:58.882083Z","bundle_sha256":"56b614c8fd00e9ac6ec7fb64d38742ca044a1b5d184aba884d3292f6cfcc7139"}}