{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:BGVNGDPQH4FY7YDCQEY4R7VHRE","short_pith_number":"pith:BGVNGDPQ","canonical_record":{"source":{"id":"2110.01547","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-10-04T16:37:08Z","cross_cats_sorted":["cond-mat.mes-hall","physics.app-ph","physics.optics"],"title_canon_sha256":"a9fc35430a5f5618c2ec213489a6a272f19eca3685170e0230a2ff33b0a3ad46","abstract_canon_sha256":"ef0e389aeb18e3daaed0a0e41ca5fa1f340af5ed4d00f6f485063243e48289e6"},"schema_version":"1.0"},"canonical_sha256":"09aad30df03f0b8fe0628131c8fea7892d587bea668ae349d360605a58b79041","source":{"kind":"arxiv","id":"2110.01547","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2110.01547","created_at":"2026-07-05T03:19:56Z"},{"alias_kind":"arxiv_version","alias_value":"2110.01547v1","created_at":"2026-07-05T03:19:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2110.01547","created_at":"2026-07-05T03:19:56Z"},{"alias_kind":"pith_short_12","alias_value":"BGVNGDPQH4FY","created_at":"2026-07-05T03:19:56Z"},{"alias_kind":"pith_short_16","alias_value":"BGVNGDPQH4FY7YDC","created_at":"2026-07-05T03:19:56Z"},{"alias_kind":"pith_short_8","alias_value":"BGVNGDPQ","created_at":"2026-07-05T03:19:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:BGVNGDPQH4FY7YDCQEY4R7VHRE","target":"record","payload":{"canonical_record":{"source":{"id":"2110.01547","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-10-04T16:37:08Z","cross_cats_sorted":["cond-mat.mes-hall","physics.app-ph","physics.optics"],"title_canon_sha256":"a9fc35430a5f5618c2ec213489a6a272f19eca3685170e0230a2ff33b0a3ad46","abstract_canon_sha256":"ef0e389aeb18e3daaed0a0e41ca5fa1f340af5ed4d00f6f485063243e48289e6"},"schema_version":"1.0"},"canonical_sha256":"09aad30df03f0b8fe0628131c8fea7892d587bea668ae349d360605a58b79041","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:19:56.794511Z","signature_b64":"juE2r+3krKCZgp4whtM9Ulsb3BvL7+MVjiHmoO+EVlPuPrPskmugsx0Sttw5DmxtOJ538QGLf4ikd+8B5MycBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"09aad30df03f0b8fe0628131c8fea7892d587bea668ae349d360605a58b79041","last_reissued_at":"2026-07-05T03:19:56.794049Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:19:56.794049Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2110.01547","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":"2026-07-05T03:19:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"epX9ec1ON41YLteLeGSE4HYuVII0ykYxcDD+w03eFT69xl66HP3JlAb7JxVHNCPl8PL4eUKXz+13kCXpMj1jDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T11:59:00.516778Z"},"content_sha256":"81b9a792b6935f86727c9b05bc9457b93cb0540bf046de353f85e160b322fc3c","schema_version":"1.0","event_id":"sha256:81b9a792b6935f86727c9b05bc9457b93cb0540bf046de353f85e160b322fc3c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:BGVNGDPQH4FY7YDCQEY4R7VHRE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Strain Engineering of Epitaxial Pt/Fe Spintronic Terahertz Emitter","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mes-hall","physics.app-ph","physics.optics"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Anders Rydberg, Dragos Dancila, Ebrahim Bagherikorani, Hermann A. D\\\"urr, Karim Mohammadpour-Aghdam, Kasturie Jatkar, Martin Pavelka, Peter Svedlindh, Rahul Gupta, Rimantas Brucas, Venkatesh Mottamchetty","submitted_at":"2021-10-04T16:37:08Z","abstract_excerpt":"Spin-based terahertz (THz) emitters, utilizing the inverse spin Hall effect, are ultra-modern sources for the generation of THz electromagnetic radiation. To make a powerful emitter having large THz amplitude and bandwidth, fundamental understanding in terms of microscopic models is essential. This study reveals important factors to engineer the THz emission amplitude and bandwidth in epitaxial Pt/Fe emitters grown on MgO and MgAl$_2$O$_4$ (MAO) substrates, where the choice of the substrate plays an important role. The THz amplitude and bandwidth are affected by the induced strain in the Fe sp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2110.01547","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2110.01547/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":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":"2026-07-05T03:19:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SzcVaL7joGdmzIYCZnSGBjSOuDi2DgswSFXytFitvyVL0pTZvKu8rL0iaDbxfpuyVMKG5baBHRPZcQ6A2gq+Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T11:59:00.517142Z"},"content_sha256":"0d9ec2934ee7afd25a64775985d141ddca511d44c8901b831e070dc1567f0493","schema_version":"1.0","event_id":"sha256:0d9ec2934ee7afd25a64775985d141ddca511d44c8901b831e070dc1567f0493"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BGVNGDPQH4FY7YDCQEY4R7VHRE/bundle.json","state_url":"https://pith.science/pith/BGVNGDPQH4FY7YDCQEY4R7VHRE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BGVNGDPQH4FY7YDCQEY4R7VHRE/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":"2026-07-07T11:59:00Z","links":{"resolver":"https://pith.science/pith/BGVNGDPQH4FY7YDCQEY4R7VHRE","bundle":"https://pith.science/pith/BGVNGDPQH4FY7YDCQEY4R7VHRE/bundle.json","state":"https://pith.science/pith/BGVNGDPQH4FY7YDCQEY4R7VHRE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BGVNGDPQH4FY7YDCQEY4R7VHRE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:BGVNGDPQH4FY7YDCQEY4R7VHRE","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":"ef0e389aeb18e3daaed0a0e41ca5fa1f340af5ed4d00f6f485063243e48289e6","cross_cats_sorted":["cond-mat.mes-hall","physics.app-ph","physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-10-04T16:37:08Z","title_canon_sha256":"a9fc35430a5f5618c2ec213489a6a272f19eca3685170e0230a2ff33b0a3ad46"},"schema_version":"1.0","source":{"id":"2110.01547","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2110.01547","created_at":"2026-07-05T03:19:56Z"},{"alias_kind":"arxiv_version","alias_value":"2110.01547v1","created_at":"2026-07-05T03:19:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2110.01547","created_at":"2026-07-05T03:19:56Z"},{"alias_kind":"pith_short_12","alias_value":"BGVNGDPQH4FY","created_at":"2026-07-05T03:19:56Z"},{"alias_kind":"pith_short_16","alias_value":"BGVNGDPQH4FY7YDC","created_at":"2026-07-05T03:19:56Z"},{"alias_kind":"pith_short_8","alias_value":"BGVNGDPQ","created_at":"2026-07-05T03:19:56Z"}],"graph_snapshots":[{"event_id":"sha256:0d9ec2934ee7afd25a64775985d141ddca511d44c8901b831e070dc1567f0493","target":"graph","created_at":"2026-07-05T03:19:56Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2110.01547/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Spin-based terahertz (THz) emitters, utilizing the inverse spin Hall effect, are ultra-modern sources for the generation of THz electromagnetic radiation. To make a powerful emitter having large THz amplitude and bandwidth, fundamental understanding in terms of microscopic models is essential. This study reveals important factors to engineer the THz emission amplitude and bandwidth in epitaxial Pt/Fe emitters grown on MgO and MgAl$_2$O$_4$ (MAO) substrates, where the choice of the substrate plays an important role. The THz amplitude and bandwidth are affected by the induced strain in the Fe sp","authors_text":"Anders Rydberg, Dragos Dancila, Ebrahim Bagherikorani, Hermann A. D\\\"urr, Karim Mohammadpour-Aghdam, Kasturie Jatkar, Martin Pavelka, Peter Svedlindh, Rahul Gupta, Rimantas Brucas, Venkatesh Mottamchetty","cross_cats":["cond-mat.mes-hall","physics.app-ph","physics.optics"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-10-04T16:37:08Z","title":"Strain Engineering of Epitaxial Pt/Fe Spintronic Terahertz Emitter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2110.01547","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":"sha256:81b9a792b6935f86727c9b05bc9457b93cb0540bf046de353f85e160b322fc3c","target":"record","created_at":"2026-07-05T03:19:56Z","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":"ef0e389aeb18e3daaed0a0e41ca5fa1f340af5ed4d00f6f485063243e48289e6","cross_cats_sorted":["cond-mat.mes-hall","physics.app-ph","physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-10-04T16:37:08Z","title_canon_sha256":"a9fc35430a5f5618c2ec213489a6a272f19eca3685170e0230a2ff33b0a3ad46"},"schema_version":"1.0","source":{"id":"2110.01547","kind":"arxiv","version":1}},"canonical_sha256":"09aad30df03f0b8fe0628131c8fea7892d587bea668ae349d360605a58b79041","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"09aad30df03f0b8fe0628131c8fea7892d587bea668ae349d360605a58b79041","first_computed_at":"2026-07-05T03:19:56.794049Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:19:56.794049Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"juE2r+3krKCZgp4whtM9Ulsb3BvL7+MVjiHmoO+EVlPuPrPskmugsx0Sttw5DmxtOJ538QGLf4ikd+8B5MycBA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:19:56.794511Z","signed_message":"canonical_sha256_bytes"},"source_id":"2110.01547","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:81b9a792b6935f86727c9b05bc9457b93cb0540bf046de353f85e160b322fc3c","sha256:0d9ec2934ee7afd25a64775985d141ddca511d44c8901b831e070dc1567f0493"],"state_sha256":"1722d6f657bad6708781d7e50c5932f36d37ca71f79332d747f179b549f5ce57"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q4TIE69pv6KNwRnfKnPG8LY+J4XLoiqDwuZ9kL03cqrjfgMwJQdcxwiXOMKvITBXYwe2pnkO59Co0uS63PjRDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T11:59:00.519138Z","bundle_sha256":"aa0400c4587da7d5a51be0c107f1ea2332bc146e040d3a31ed7b749e4a629d27"}}