{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:5S2SJ2VB5PHX67VF2BKJTPOXBE","short_pith_number":"pith:5S2SJ2VB","schema_version":"1.0","canonical_sha256":"ecb524eaa1ebcf7f7ea5d05499bdd7092d9832ee257c8063dcac2642fe725c1d","source":{"kind":"arxiv","id":"1608.01053","version":2},"attestation_state":"computed","paper":{"title":"Intrinsic coherent acoustic phonons in indirect band gap semiconductors Si and GaP","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Avinash Rustagi, Christopher J. Stanton, Hrvoje Petek, Kunie Ishioka, Ulrich Hoefer","submitted_at":"2016-08-03T02:13:40Z","abstract_excerpt":"We report on the intrinsic optical generation and detection of coherent acoustic phonons at (001)-oriented bulk Si and GaP without metallic phonon transducer structures. Photoexcitation by a 3.1-eV laser pulse generates a normal strain pulse within the $\\sim$100-nm penetration depth in both semiconductors. The subsequent propagation of the strain pulse into the bulk is detected with a delayed optical probe as a periodic modulation of the optical reflectivity. Our theoretical model explains quantitatively the generation of the acoustic pulse via the deformation potential electron-phonon couplin"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1608.01053","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2016-08-03T02:13:40Z","cross_cats_sorted":[],"title_canon_sha256":"9cbbd7f3c0a4edda871ce090fa392a142238dfb38260ddd82fe5cc4f09e13919","abstract_canon_sha256":"7fdbe8cb205323e20e0d126867fd4d12c512339594692c095d898402e0bfd555"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:39:18.294967Z","signature_b64":"6P0tFV9hvoS7A8e47X5nhEc8G8j8o36rJIey+pcKoK/xU6ohiFkK/pabIRsZkBaDAO31tYPH9NNpw14tnDYzAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ecb524eaa1ebcf7f7ea5d05499bdd7092d9832ee257c8063dcac2642fe725c1d","last_reissued_at":"2026-05-18T00:39:18.294092Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:39:18.294092Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Intrinsic coherent acoustic phonons in indirect band gap semiconductors Si and GaP","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Avinash Rustagi, Christopher J. Stanton, Hrvoje Petek, Kunie Ishioka, Ulrich Hoefer","submitted_at":"2016-08-03T02:13:40Z","abstract_excerpt":"We report on the intrinsic optical generation and detection of coherent acoustic phonons at (001)-oriented bulk Si and GaP without metallic phonon transducer structures. Photoexcitation by a 3.1-eV laser pulse generates a normal strain pulse within the $\\sim$100-nm penetration depth in both semiconductors. The subsequent propagation of the strain pulse into the bulk is detected with a delayed optical probe as a periodic modulation of the optical reflectivity. Our theoretical model explains quantitatively the generation of the acoustic pulse via the deformation potential electron-phonon couplin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.01053","kind":"arxiv","version":2},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1608.01053","created_at":"2026-05-18T00:39:18.294233+00:00"},{"alias_kind":"arxiv_version","alias_value":"1608.01053v2","created_at":"2026-05-18T00:39:18.294233+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.01053","created_at":"2026-05-18T00:39:18.294233+00:00"},{"alias_kind":"pith_short_12","alias_value":"5S2SJ2VB5PHX","created_at":"2026-05-18T12:30:01.593930+00:00"},{"alias_kind":"pith_short_16","alias_value":"5S2SJ2VB5PHX67VF","created_at":"2026-05-18T12:30:01.593930+00:00"},{"alias_kind":"pith_short_8","alias_value":"5S2SJ2VB","created_at":"2026-05-18T12:30:01.593930+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/5S2SJ2VB5PHX67VF2BKJTPOXBE","json":"https://pith.science/pith/5S2SJ2VB5PHX67VF2BKJTPOXBE.json","graph_json":"https://pith.science/api/pith-number/5S2SJ2VB5PHX67VF2BKJTPOXBE/graph.json","events_json":"https://pith.science/api/pith-number/5S2SJ2VB5PHX67VF2BKJTPOXBE/events.json","paper":"https://pith.science/paper/5S2SJ2VB"},"agent_actions":{"view_html":"https://pith.science/pith/5S2SJ2VB5PHX67VF2BKJTPOXBE","download_json":"https://pith.science/pith/5S2SJ2VB5PHX67VF2BKJTPOXBE.json","view_paper":"https://pith.science/paper/5S2SJ2VB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1608.01053&json=true","fetch_graph":"https://pith.science/api/pith-number/5S2SJ2VB5PHX67VF2BKJTPOXBE/graph.json","fetch_events":"https://pith.science/api/pith-number/5S2SJ2VB5PHX67VF2BKJTPOXBE/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/5S2SJ2VB5PHX67VF2BKJTPOXBE/action/timestamp_anchor","attest_storage":"https://pith.science/pith/5S2SJ2VB5PHX67VF2BKJTPOXBE/action/storage_attestation","attest_author":"https://pith.science/pith/5S2SJ2VB5PHX67VF2BKJTPOXBE/action/author_attestation","sign_citation":"https://pith.science/pith/5S2SJ2VB5PHX67VF2BKJTPOXBE/action/citation_signature","submit_replication":"https://pith.science/pith/5S2SJ2VB5PHX67VF2BKJTPOXBE/action/replication_record"}},"created_at":"2026-05-18T00:39:18.294233+00:00","updated_at":"2026-05-18T00:39:18.294233+00:00"}