{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:WLSM5YJTRSW5I5AXRVV2PTW4FF","short_pith_number":"pith:WLSM5YJT","canonical_record":{"source":{"id":"1804.05221","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-14T13:21:35Z","cross_cats_sorted":[],"title_canon_sha256":"4759471a8740b38cf73e5f21684bb28eecb62563907e22b3fed553ce830e7b43","abstract_canon_sha256":"98ba4f9fd9f682c4f1954459278d4c99c78532ae4ae2aea28fe7c37928893e8a"},"schema_version":"1.0"},"canonical_sha256":"b2e4cee1338cadd474178d6ba7cedc294f6d8c8faba30a95ac8d55af98258580","source":{"kind":"arxiv","id":"1804.05221","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.05221","created_at":"2026-05-18T00:15:14Z"},{"alias_kind":"arxiv_version","alias_value":"1804.05221v1","created_at":"2026-05-18T00:15:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.05221","created_at":"2026-05-18T00:15:14Z"},{"alias_kind":"pith_short_12","alias_value":"WLSM5YJTRSW5","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"WLSM5YJTRSW5I5AX","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"WLSM5YJT","created_at":"2026-05-18T12:33:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:WLSM5YJTRSW5I5AXRVV2PTW4FF","target":"record","payload":{"canonical_record":{"source":{"id":"1804.05221","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-14T13:21:35Z","cross_cats_sorted":[],"title_canon_sha256":"4759471a8740b38cf73e5f21684bb28eecb62563907e22b3fed553ce830e7b43","abstract_canon_sha256":"98ba4f9fd9f682c4f1954459278d4c99c78532ae4ae2aea28fe7c37928893e8a"},"schema_version":"1.0"},"canonical_sha256":"b2e4cee1338cadd474178d6ba7cedc294f6d8c8faba30a95ac8d55af98258580","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:15:14.546378Z","signature_b64":"nxxN6Si4vmcadHilOaaq97K/7NE7PF+8S46V0oexRByOoMItvl0+8+IJ6PZpf8anYrSb2XLSlmzxqarE18YsAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b2e4cee1338cadd474178d6ba7cedc294f6d8c8faba30a95ac8d55af98258580","last_reissued_at":"2026-05-18T00:15:14.545722Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:15:14.545722Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.05221","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":"2026-05-18T00:15:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"04su96g7Qj76j3Kuo/siN1Ffl8PEGMSRor9nuzK4u+JnpPMN4pqrvHcsLtfYcC45t80KDbIL+trjd320sscACw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T23:33:59.044434Z"},"content_sha256":"ca15b99e8fd00aa14ecb904883a6a343afcdc6b4885b934740d907c0f6004b7c","schema_version":"1.0","event_id":"sha256:ca15b99e8fd00aa14ecb904883a6a343afcdc6b4885b934740d907c0f6004b7c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:WLSM5YJTRSW5I5AXRVV2PTW4FF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Temperature effect on the coupling between coherent longitudinal phonons and plasmons in n- and p-type GaAs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Hang Zhang, Jianbo Hu, Kazutaka G. Nakamura, Oleg V. Misochko, Yi Sun","submitted_at":"2018-04-14T13:21:35Z","abstract_excerpt":"The coupling between longitudinal optical (LO) phonons and plasmons plays a fundamental role in determining the performance of doped semiconductor devices. In this work, we report a comparative investigation into the dependence of the coupling on temperature and doping in n- and p-type GaAs by using ultrafast optical phonon spectroscopy. A suppression of coherent oscillations has been observed in p-type GaAs at lower temperature, strikingly different from n-type GaAs and other materials in which coherent oscillations are strongly enhanced by cooling. We attribute this unexpected observation to"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.05221","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":"2026-05-18T00:15:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iqS/cR3OdihoDnOeTnWlpuLNbxzjXCoZMd72JIFa3+zrRtqoxGuSFnSxnd0ovpeELEpWnlB8ck/1Q+IqKZPIDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T23:33:59.045164Z"},"content_sha256":"4a0f62ae7d050e67132f98fae0418790cb53fbaa37e697a0df4c08560a466ea1","schema_version":"1.0","event_id":"sha256:4a0f62ae7d050e67132f98fae0418790cb53fbaa37e697a0df4c08560a466ea1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WLSM5YJTRSW5I5AXRVV2PTW4FF/bundle.json","state_url":"https://pith.science/pith/WLSM5YJTRSW5I5AXRVV2PTW4FF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WLSM5YJTRSW5I5AXRVV2PTW4FF/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":"2026-06-10T23:33:59Z","links":{"resolver":"https://pith.science/pith/WLSM5YJTRSW5I5AXRVV2PTW4FF","bundle":"https://pith.science/pith/WLSM5YJTRSW5I5AXRVV2PTW4FF/bundle.json","state":"https://pith.science/pith/WLSM5YJTRSW5I5AXRVV2PTW4FF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WLSM5YJTRSW5I5AXRVV2PTW4FF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:WLSM5YJTRSW5I5AXRVV2PTW4FF","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":"98ba4f9fd9f682c4f1954459278d4c99c78532ae4ae2aea28fe7c37928893e8a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-14T13:21:35Z","title_canon_sha256":"4759471a8740b38cf73e5f21684bb28eecb62563907e22b3fed553ce830e7b43"},"schema_version":"1.0","source":{"id":"1804.05221","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.05221","created_at":"2026-05-18T00:15:14Z"},{"alias_kind":"arxiv_version","alias_value":"1804.05221v1","created_at":"2026-05-18T00:15:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.05221","created_at":"2026-05-18T00:15:14Z"},{"alias_kind":"pith_short_12","alias_value":"WLSM5YJTRSW5","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"WLSM5YJTRSW5I5AX","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"WLSM5YJT","created_at":"2026-05-18T12:33:01Z"}],"graph_snapshots":[{"event_id":"sha256:4a0f62ae7d050e67132f98fae0418790cb53fbaa37e697a0df4c08560a466ea1","target":"graph","created_at":"2026-05-18T00:15:14Z","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":"The coupling between longitudinal optical (LO) phonons and plasmons plays a fundamental role in determining the performance of doped semiconductor devices. In this work, we report a comparative investigation into the dependence of the coupling on temperature and doping in n- and p-type GaAs by using ultrafast optical phonon spectroscopy. A suppression of coherent oscillations has been observed in p-type GaAs at lower temperature, strikingly different from n-type GaAs and other materials in which coherent oscillations are strongly enhanced by cooling. We attribute this unexpected observation to","authors_text":"Hang Zhang, Jianbo Hu, Kazutaka G. Nakamura, Oleg V. Misochko, Yi Sun","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-14T13:21:35Z","title":"Temperature effect on the coupling between coherent longitudinal phonons and plasmons in n- and p-type GaAs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.05221","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:ca15b99e8fd00aa14ecb904883a6a343afcdc6b4885b934740d907c0f6004b7c","target":"record","created_at":"2026-05-18T00:15:14Z","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":"98ba4f9fd9f682c4f1954459278d4c99c78532ae4ae2aea28fe7c37928893e8a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-04-14T13:21:35Z","title_canon_sha256":"4759471a8740b38cf73e5f21684bb28eecb62563907e22b3fed553ce830e7b43"},"schema_version":"1.0","source":{"id":"1804.05221","kind":"arxiv","version":1}},"canonical_sha256":"b2e4cee1338cadd474178d6ba7cedc294f6d8c8faba30a95ac8d55af98258580","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b2e4cee1338cadd474178d6ba7cedc294f6d8c8faba30a95ac8d55af98258580","first_computed_at":"2026-05-18T00:15:14.545722Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:15:14.545722Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nxxN6Si4vmcadHilOaaq97K/7NE7PF+8S46V0oexRByOoMItvl0+8+IJ6PZpf8anYrSb2XLSlmzxqarE18YsAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:15:14.546378Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.05221","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ca15b99e8fd00aa14ecb904883a6a343afcdc6b4885b934740d907c0f6004b7c","sha256:4a0f62ae7d050e67132f98fae0418790cb53fbaa37e697a0df4c08560a466ea1"],"state_sha256":"ece95ef5d3bc5cb4e22f8107ba7167521240831c1371590563ffcd5c1654ce4b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uarfM/wxR9nf2pI3+5ErkHcoeP7zz9kfkgC8WqaNWgTKv99Xdv5y+SO0Ukszbzh+TWD4yuRxhOxMjB4gao5eDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T23:33:59.049044Z","bundle_sha256":"17c85566046a4f311d2cf7ff1800b608bb61282eb6d9162082e3d21b0fd66a42"}}