{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:XVNF4FIWTOGIFDWRHII26QZE5W","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":"0afa89a071a0751ecc78d54496d974ffcef2ac5596e6e53a5914770e6c1a75b5","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-05-24T02:37:39Z","title_canon_sha256":"ea0d8d90df37bb197690e986cc02b24edf124c19ff4626d358b657fdddbd9af0"},"schema_version":"1.0","source":{"id":"1805.09489","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.09489","created_at":"2026-05-18T00:15:03Z"},{"alias_kind":"arxiv_version","alias_value":"1805.09489v1","created_at":"2026-05-18T00:15:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.09489","created_at":"2026-05-18T00:15:03Z"},{"alias_kind":"pith_short_12","alias_value":"XVNF4FIWTOGI","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"XVNF4FIWTOGIFDWR","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"XVNF4FIW","created_at":"2026-05-18T12:33:01Z"}],"graph_snapshots":[{"event_id":"sha256:30dd503ede022e03681f07e273430daa3f2b5ac2178683945bb7006a630138ba","target":"graph","created_at":"2026-05-18T00:15:03Z","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 have studied on optical second harmonic generations (SHGs) from atomically thin MoTe2 flakes with 2H and 1T' phases. From 2H-MoTe2 samples with odd (even) numbers of layers, strong (negligible) SHGs are observed due to the layer-dependent broken inversion symmetry. When pumped by a telecom-band laser, SHG from a monolayer 2H-MoTe2 is about one order of magnitude stronger than that from a monolayer WS2; an extremely high second-order nonlinear susceptibility of 2.5 nm/V is estimated, presenting the highest value among those reported in two-dimensional materials. SHG measurements in MoTe2 are","authors_text":"Jianlin Zhao, Jiulong Yang, Ruijuan Tian, Rui Yin, Xuetao Gan, Yu Song","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-05-24T02:37:39Z","title":"Second harmonic generation in atomically thin MoTe2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.09489","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":"sha256:83957c5fa11e77cfc1340fc82fcb702255c11ca7b3e9ae8f51ad9b4e959ef02a","target":"record","created_at":"2026-05-18T00:15:03Z","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":"0afa89a071a0751ecc78d54496d974ffcef2ac5596e6e53a5914770e6c1a75b5","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2018-05-24T02:37:39Z","title_canon_sha256":"ea0d8d90df37bb197690e986cc02b24edf124c19ff4626d358b657fdddbd9af0"},"schema_version":"1.0","source":{"id":"1805.09489","kind":"arxiv","version":1}},"canonical_sha256":"bd5a5e15169b8c828ed13a11af4324eda6a31f01783bd4e336594b8297028604","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bd5a5e15169b8c828ed13a11af4324eda6a31f01783bd4e336594b8297028604","first_computed_at":"2026-05-18T00:15:03.765935Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:15:03.765935Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tBjFxZiP8C2tJn28ng6PM/u/v9gQ9muTB7fawrSu2WUFPaJR5NFfwU3TjSmlXF+CNnYUR6/JHaMigN4gqthIDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:15:03.766440Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.09489","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:83957c5fa11e77cfc1340fc82fcb702255c11ca7b3e9ae8f51ad9b4e959ef02a","sha256:30dd503ede022e03681f07e273430daa3f2b5ac2178683945bb7006a630138ba"],"state_sha256":"fc2eab4239a9f5d307904d9878bc36e72dfe79ee4b1b8a78171703926e0f88a1"}