{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:ZSJJJWXKUX2VJDNPFLATYOVZXZ","short_pith_number":"pith:ZSJJJWXK","canonical_record":{"source":{"id":"1510.02701","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-10-09T15:17:02Z","cross_cats_sorted":[],"title_canon_sha256":"f82b1ad3647373ed3ed9145fdf3fdf18423288e4322161386d8721e9d2372b28","abstract_canon_sha256":"7fe50fd13747bc678e13cc493de89c6ba3223975888f4e7ae30a6d0064ff7dd6"},"schema_version":"1.0"},"canonical_sha256":"cc9294daeaa5f5548daf2ac13c3ab9be58e9d7c6199a437d287b6311ef7a6302","source":{"kind":"arxiv","id":"1510.02701","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.02701","created_at":"2026-05-18T01:14:03Z"},{"alias_kind":"arxiv_version","alias_value":"1510.02701v1","created_at":"2026-05-18T01:14:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.02701","created_at":"2026-05-18T01:14:03Z"},{"alias_kind":"pith_short_12","alias_value":"ZSJJJWXKUX2V","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"ZSJJJWXKUX2VJDNP","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"ZSJJJWXK","created_at":"2026-05-18T12:29:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:ZSJJJWXKUX2VJDNPFLATYOVZXZ","target":"record","payload":{"canonical_record":{"source":{"id":"1510.02701","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-10-09T15:17:02Z","cross_cats_sorted":[],"title_canon_sha256":"f82b1ad3647373ed3ed9145fdf3fdf18423288e4322161386d8721e9d2372b28","abstract_canon_sha256":"7fe50fd13747bc678e13cc493de89c6ba3223975888f4e7ae30a6d0064ff7dd6"},"schema_version":"1.0"},"canonical_sha256":"cc9294daeaa5f5548daf2ac13c3ab9be58e9d7c6199a437d287b6311ef7a6302","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:14:03.078129Z","signature_b64":"TorPPy+wWho9IyteVaPrFE20YAfriTGpcAI+tptTsCoqCyi2BL0ZridOqUbDyRDB1IHNj/kuWR2pQlHBukESCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cc9294daeaa5f5548daf2ac13c3ab9be58e9d7c6199a437d287b6311ef7a6302","last_reissued_at":"2026-05-18T01:14:03.077565Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:14:03.077565Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.02701","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":"2026-05-18T01:14:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NHbkqjZ41sUkbYCBa7GeLkbMyvtaE6qt8lMVbAhtO3A/bgaFSHGOU6f9xoFfCI3VFbZx7eVitiYhFkdbiLEIBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:53:24.126960Z"},"content_sha256":"a73082553d542079f39abe60dd99e64499bc1ddac018232edef1f1694a9984ef","schema_version":"1.0","event_id":"sha256:a73082553d542079f39abe60dd99e64499bc1ddac018232edef1f1694a9984ef"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:ZSJJJWXKUX2VJDNPFLATYOVZXZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Controlling Multipolar Surface Plasmon Excitation through the Azimuthal Phase Structure of Electron Vortex Beams","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Caterina Ducati, Daniel Ugarte","submitted_at":"2015-10-09T15:17:02Z","abstract_excerpt":"We have theoretically studied how the azimuthal phase structure of an electron vortex beam excites surface plasmons on metal particles of different geometries as observed in electron energy loss spectroscopy. To do so, we have developed a semi-classical approximation combining an azimuthal phase factor and the dielectric formalism. Our results indicate that the vortex beam order may be used to modify and control surface plasmon multipole excitation in nanoparticles. In favorable cases, specific plasmon modes can even attain enhancement factor of several orders of magnitude. Since, electron vor"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.02701","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":"2026-05-18T01:14:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z6tglkrb8/pdPP38jGjV59mgO4EmCWF/VzX2DUJDtakFC6SaNg3MhykdMl1n7+RLLN43nWm4dCnrPpeZ5/iyAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:53:24.127738Z"},"content_sha256":"1567126ee9c9bcf5d0bbd8e6d42fd1126c9e11af04458b165758199f4fa6341e","schema_version":"1.0","event_id":"sha256:1567126ee9c9bcf5d0bbd8e6d42fd1126c9e11af04458b165758199f4fa6341e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZSJJJWXKUX2VJDNPFLATYOVZXZ/bundle.json","state_url":"https://pith.science/pith/ZSJJJWXKUX2VJDNPFLATYOVZXZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZSJJJWXKUX2VJDNPFLATYOVZXZ/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":"2026-05-31T16:53:24Z","links":{"resolver":"https://pith.science/pith/ZSJJJWXKUX2VJDNPFLATYOVZXZ","bundle":"https://pith.science/pith/ZSJJJWXKUX2VJDNPFLATYOVZXZ/bundle.json","state":"https://pith.science/pith/ZSJJJWXKUX2VJDNPFLATYOVZXZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZSJJJWXKUX2VJDNPFLATYOVZXZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:ZSJJJWXKUX2VJDNPFLATYOVZXZ","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":"7fe50fd13747bc678e13cc493de89c6ba3223975888f4e7ae30a6d0064ff7dd6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-10-09T15:17:02Z","title_canon_sha256":"f82b1ad3647373ed3ed9145fdf3fdf18423288e4322161386d8721e9d2372b28"},"schema_version":"1.0","source":{"id":"1510.02701","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.02701","created_at":"2026-05-18T01:14:03Z"},{"alias_kind":"arxiv_version","alias_value":"1510.02701v1","created_at":"2026-05-18T01:14:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.02701","created_at":"2026-05-18T01:14:03Z"},{"alias_kind":"pith_short_12","alias_value":"ZSJJJWXKUX2V","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"ZSJJJWXKUX2VJDNP","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"ZSJJJWXK","created_at":"2026-05-18T12:29:52Z"}],"graph_snapshots":[{"event_id":"sha256:1567126ee9c9bcf5d0bbd8e6d42fd1126c9e11af04458b165758199f4fa6341e","target":"graph","created_at":"2026-05-18T01:14:03Z","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 theoretically studied how the azimuthal phase structure of an electron vortex beam excites surface plasmons on metal particles of different geometries as observed in electron energy loss spectroscopy. To do so, we have developed a semi-classical approximation combining an azimuthal phase factor and the dielectric formalism. Our results indicate that the vortex beam order may be used to modify and control surface plasmon multipole excitation in nanoparticles. In favorable cases, specific plasmon modes can even attain enhancement factor of several orders of magnitude. Since, electron vor","authors_text":"Caterina Ducati, Daniel Ugarte","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-10-09T15:17:02Z","title":"Controlling Multipolar Surface Plasmon Excitation through the Azimuthal Phase Structure of Electron Vortex Beams"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.02701","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:a73082553d542079f39abe60dd99e64499bc1ddac018232edef1f1694a9984ef","target":"record","created_at":"2026-05-18T01:14:03Z","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":"7fe50fd13747bc678e13cc493de89c6ba3223975888f4e7ae30a6d0064ff7dd6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-10-09T15:17:02Z","title_canon_sha256":"f82b1ad3647373ed3ed9145fdf3fdf18423288e4322161386d8721e9d2372b28"},"schema_version":"1.0","source":{"id":"1510.02701","kind":"arxiv","version":1}},"canonical_sha256":"cc9294daeaa5f5548daf2ac13c3ab9be58e9d7c6199a437d287b6311ef7a6302","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cc9294daeaa5f5548daf2ac13c3ab9be58e9d7c6199a437d287b6311ef7a6302","first_computed_at":"2026-05-18T01:14:03.077565Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:14:03.077565Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TorPPy+wWho9IyteVaPrFE20YAfriTGpcAI+tptTsCoqCyi2BL0ZridOqUbDyRDB1IHNj/kuWR2pQlHBukESCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:14:03.078129Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.02701","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a73082553d542079f39abe60dd99e64499bc1ddac018232edef1f1694a9984ef","sha256:1567126ee9c9bcf5d0bbd8e6d42fd1126c9e11af04458b165758199f4fa6341e"],"state_sha256":"610923c2c3d8edb8be19490e8dc2e43571d374cf7f4cde147d1c8c725d8a9679"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3mjuKMXkn8m93e4WWKlqvzUDWsK4y4XJQyenXZsy7vq4XUZA9kNkZg2C2tZ/6U91fpUj5c3Gr2lyhZeFRyYSBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T16:53:24.132218Z","bundle_sha256":"28385cf23fbea286a272d763006e57ac70db010451776e60a49b2ca7d2b0e6fb"}}