{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:NZCZOMXHUBPO4E7SMMXIUXPQ3Y","short_pith_number":"pith:NZCZOMXH","canonical_record":{"source":{"id":"1811.02012","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-11-05T20:04:22Z","cross_cats_sorted":[],"title_canon_sha256":"62ce9cef9f97330bc7408068df8bf51a97f64178dff25ee176008358acd49ca5","abstract_canon_sha256":"7d26887039b3342a49eb17202bc5fb2913e15be35cfa1e2cfe7fa5fe972c029d"},"schema_version":"1.0"},"canonical_sha256":"6e459732e7a05eee13f2632e8a5df0de0044246f875bfa3d809e9fe46f0f58cd","source":{"kind":"arxiv","id":"1811.02012","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.02012","created_at":"2026-05-17T23:42:26Z"},{"alias_kind":"arxiv_version","alias_value":"1811.02012v1","created_at":"2026-05-17T23:42:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.02012","created_at":"2026-05-17T23:42:26Z"},{"alias_kind":"pith_short_12","alias_value":"NZCZOMXHUBPO","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NZCZOMXHUBPO4E7S","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NZCZOMXH","created_at":"2026-05-18T12:32:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:NZCZOMXHUBPO4E7SMMXIUXPQ3Y","target":"record","payload":{"canonical_record":{"source":{"id":"1811.02012","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-11-05T20:04:22Z","cross_cats_sorted":[],"title_canon_sha256":"62ce9cef9f97330bc7408068df8bf51a97f64178dff25ee176008358acd49ca5","abstract_canon_sha256":"7d26887039b3342a49eb17202bc5fb2913e15be35cfa1e2cfe7fa5fe972c029d"},"schema_version":"1.0"},"canonical_sha256":"6e459732e7a05eee13f2632e8a5df0de0044246f875bfa3d809e9fe46f0f58cd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:42:26.627553Z","signature_b64":"9j1IKc3hp/NNCxCJMAf5mmyOjvYqH3y5CjLLw4yBrAmktCyP4EbeTgLc8O4+tQZJekEIiKnoVFdK7lZ6grV1Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6e459732e7a05eee13f2632e8a5df0de0044246f875bfa3d809e9fe46f0f58cd","last_reissued_at":"2026-05-17T23:42:26.626945Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:42:26.626945Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.02012","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":"2026-05-17T23:42:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tc1uSdRHX3YznO22NTUat4d4gCL6DEXU9Ehz3RJAAZ0Vzz/YgE1iBoPNwbhSPeaa/QqrL6iFnrPTJ5e+1aX6CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:37:32.278514Z"},"content_sha256":"6f2de57513eaae3df0f6e8e147fa7cad2572c07cb23fd27d831340881ad2b376","schema_version":"1.0","event_id":"sha256:6f2de57513eaae3df0f6e8e147fa7cad2572c07cb23fd27d831340881ad2b376"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:NZCZOMXHUBPO4E7SMMXIUXPQ3Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Lorentz TEM investigation of chiral spin textures and N\\'eel Skyrmions in asymmetric [Pt/(Co/Ni)$_M$/Ir]$_N$ multi-layer thin films","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Derek Lau, Marc De Graef, Maxwell Li, Vincent Sokalski","submitted_at":"2018-11-05T20:04:22Z","abstract_excerpt":"We examine magnetic domain patterns in symmetric [Co/Ni]$_M$ and asymmetric [Pt/(Co/Ni)$_M$/Ir]$_N$ multi-layers using Fresnel mode Lorentz transmission electron microscopy (LTEM). In the symmetric multi-layer, where the Dzyaloshinskii-Moriya Interaction is expected to be zero, we observe purely Bloch type domain walls with no preferred chirality. In the asymmetric multi-layers, where significant interfacial DMI is present, we observe domain patterns with chiral N\\'eel domain walls, which evolve into sub-100nm isolated N\\'eel Skyrmions with the application of a perpendicular field. The impact "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.02012","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":"2026-05-17T23:42:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xfwHu3lYxm0kitNTnc0tXx6wr7qVROUIB2eNdVnmEhSWP1S4UY+zy5xxQ55X3l4AD8MPSNc8iRy84INtX+0zCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T22:37:32.279272Z"},"content_sha256":"90a2c583a712e5c3d3c7f5adde4a680c7e958360587cfb796405a95b7dc59c3b","schema_version":"1.0","event_id":"sha256:90a2c583a712e5c3d3c7f5adde4a680c7e958360587cfb796405a95b7dc59c3b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NZCZOMXHUBPO4E7SMMXIUXPQ3Y/bundle.json","state_url":"https://pith.science/pith/NZCZOMXHUBPO4E7SMMXIUXPQ3Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NZCZOMXHUBPO4E7SMMXIUXPQ3Y/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":"2026-05-30T22:37:32Z","links":{"resolver":"https://pith.science/pith/NZCZOMXHUBPO4E7SMMXIUXPQ3Y","bundle":"https://pith.science/pith/NZCZOMXHUBPO4E7SMMXIUXPQ3Y/bundle.json","state":"https://pith.science/pith/NZCZOMXHUBPO4E7SMMXIUXPQ3Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NZCZOMXHUBPO4E7SMMXIUXPQ3Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:NZCZOMXHUBPO4E7SMMXIUXPQ3Y","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":"7d26887039b3342a49eb17202bc5fb2913e15be35cfa1e2cfe7fa5fe972c029d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-11-05T20:04:22Z","title_canon_sha256":"62ce9cef9f97330bc7408068df8bf51a97f64178dff25ee176008358acd49ca5"},"schema_version":"1.0","source":{"id":"1811.02012","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.02012","created_at":"2026-05-17T23:42:26Z"},{"alias_kind":"arxiv_version","alias_value":"1811.02012v1","created_at":"2026-05-17T23:42:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.02012","created_at":"2026-05-17T23:42:26Z"},{"alias_kind":"pith_short_12","alias_value":"NZCZOMXHUBPO","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"NZCZOMXHUBPO4E7S","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"NZCZOMXH","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:90a2c583a712e5c3d3c7f5adde4a680c7e958360587cfb796405a95b7dc59c3b","target":"graph","created_at":"2026-05-17T23:42:26Z","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 examine magnetic domain patterns in symmetric [Co/Ni]$_M$ and asymmetric [Pt/(Co/Ni)$_M$/Ir]$_N$ multi-layers using Fresnel mode Lorentz transmission electron microscopy (LTEM). In the symmetric multi-layer, where the Dzyaloshinskii-Moriya Interaction is expected to be zero, we observe purely Bloch type domain walls with no preferred chirality. In the asymmetric multi-layers, where significant interfacial DMI is present, we observe domain patterns with chiral N\\'eel domain walls, which evolve into sub-100nm isolated N\\'eel Skyrmions with the application of a perpendicular field. The impact ","authors_text":"Derek Lau, Marc De Graef, Maxwell Li, Vincent Sokalski","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-11-05T20:04:22Z","title":"Lorentz TEM investigation of chiral spin textures and N\\'eel Skyrmions in asymmetric [Pt/(Co/Ni)$_M$/Ir]$_N$ multi-layer thin films"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.02012","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":"sha256:6f2de57513eaae3df0f6e8e147fa7cad2572c07cb23fd27d831340881ad2b376","target":"record","created_at":"2026-05-17T23:42:26Z","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":"7d26887039b3342a49eb17202bc5fb2913e15be35cfa1e2cfe7fa5fe972c029d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-11-05T20:04:22Z","title_canon_sha256":"62ce9cef9f97330bc7408068df8bf51a97f64178dff25ee176008358acd49ca5"},"schema_version":"1.0","source":{"id":"1811.02012","kind":"arxiv","version":1}},"canonical_sha256":"6e459732e7a05eee13f2632e8a5df0de0044246f875bfa3d809e9fe46f0f58cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6e459732e7a05eee13f2632e8a5df0de0044246f875bfa3d809e9fe46f0f58cd","first_computed_at":"2026-05-17T23:42:26.626945Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:26.626945Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9j1IKc3hp/NNCxCJMAf5mmyOjvYqH3y5CjLLw4yBrAmktCyP4EbeTgLc8O4+tQZJekEIiKnoVFdK7lZ6grV1Cg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:26.627553Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.02012","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6f2de57513eaae3df0f6e8e147fa7cad2572c07cb23fd27d831340881ad2b376","sha256:90a2c583a712e5c3d3c7f5adde4a680c7e958360587cfb796405a95b7dc59c3b"],"state_sha256":"c5040bf37b5af42392769a65d0e208a1bee0aa15a40a827bca17c6d758891743"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N6vrUcu7LQB6aZ/l+4kLwGV1IGGfP/xbih5F47+3tKAbUmFj2kgMC7mf8C2ieRbl9Fsy0qiCPnppOteR3NmHAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T22:37:32.281645Z","bundle_sha256":"7af1031cfa2f3f0093a145e1cd3ce70e61a13c57b460779f53cc98724680e241"}}