{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:PAAZVUCAD5WSC4DL4NQKK3YFNT","short_pith_number":"pith:PAAZVUCA","canonical_record":{"source":{"id":"2112.04869","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2021-12-09T12:39:55Z","cross_cats_sorted":[],"title_canon_sha256":"a38fb7c33992e6def299675532406b23d9bc34a9283c8bb95a0954155844dea1","abstract_canon_sha256":"58f79b1c58654a7ac9b90358736279fdd5768010a6e54e39caf3a2683c24b861"},"schema_version":"1.0"},"canonical_sha256":"78019ad0401f6d21706be360a56f056cfbd969adc452e6a7f1b8be4f0eb9e1b4","source":{"kind":"arxiv","id":"2112.04869","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.04869","created_at":"2026-07-05T03:56:53Z"},{"alias_kind":"arxiv_version","alias_value":"2112.04869v1","created_at":"2026-07-05T03:56:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.04869","created_at":"2026-07-05T03:56:53Z"},{"alias_kind":"pith_short_12","alias_value":"PAAZVUCAD5WS","created_at":"2026-07-05T03:56:53Z"},{"alias_kind":"pith_short_16","alias_value":"PAAZVUCAD5WSC4DL","created_at":"2026-07-05T03:56:53Z"},{"alias_kind":"pith_short_8","alias_value":"PAAZVUCA","created_at":"2026-07-05T03:56:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:PAAZVUCAD5WSC4DL4NQKK3YFNT","target":"record","payload":{"canonical_record":{"source":{"id":"2112.04869","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2021-12-09T12:39:55Z","cross_cats_sorted":[],"title_canon_sha256":"a38fb7c33992e6def299675532406b23d9bc34a9283c8bb95a0954155844dea1","abstract_canon_sha256":"58f79b1c58654a7ac9b90358736279fdd5768010a6e54e39caf3a2683c24b861"},"schema_version":"1.0"},"canonical_sha256":"78019ad0401f6d21706be360a56f056cfbd969adc452e6a7f1b8be4f0eb9e1b4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:56:53.200518Z","signature_b64":"uDdfFWzcoJTfQC9eMXUIbeUiLG4cRPwMMRAkPnOLxnbi3+6+nYPOQ1c5jEx+uHzXshbT2D8qwYt3bjVh5p5BCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"78019ad0401f6d21706be360a56f056cfbd969adc452e6a7f1b8be4f0eb9e1b4","last_reissued_at":"2026-07-05T03:56:53.200131Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:56:53.200131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2112.04869","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":"2026-07-05T03:56:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6HS87ln4VlVLrsNMoU3elfafaY8RKc7hdZbxVpwmh816WIHgYlDVUgNBrxJMUM4uQNZF3D+V9Pl0IcQLzKIiAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-24T04:04:42.665369Z"},"content_sha256":"e436d31a17f777539c4d1241fd4f446a5edb090f4d37d7422de11d41911ac2a3","schema_version":"1.0","event_id":"sha256:e436d31a17f777539c4d1241fd4f446a5edb090f4d37d7422de11d41911ac2a3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:PAAZVUCAD5WSC4DL4NQKK3YFNT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tuneable electron-magnon coupling of ferromagnetic surface states in PdCoO$_2$","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Andrew P. Mackenzie, Chi-Ming Yim, Dibyashree Chakraborti, Federico Mazzola, Igor Markovi\\'c, Lewis Bawden, Moritz Hoesch, Oliver J. Clark, Pallavi Kushwaha, Peter Wahl, Philip D. C. King, Seunghyun Khim, Timur K. Kim, Veronika Sunko","submitted_at":"2021-12-09T12:39:55Z","abstract_excerpt":"Controlling spin wave excitations in magnetic materials underpins the burgeoning field of magnonics. Yet, little is known about how magnons interact with the conduction electrons of itinerant magnets, or how this interplay can be controlled. Via a surface-sensitive spectroscopic approach, we demonstrate a strong and highly-tuneable electron-magnon coupling at the Pd-terminated surface of the delafossite oxide PdCoO$_2$, where a polar surface charge mediates a Stoner transition to itinerant surface ferromagnetism. We show how the coupling can be enhanced 7-fold with increasing surface disorder,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.04869","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/2112.04869/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":"2026-07-05T03:56:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s4fH/8H8vetR93xeNthNzlpMNwXkfDbuqyJMfye9LGRrWspjrQIV0VJQnnmQRX4e0bop3miOR266dGvwGntkDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-24T04:04:42.665752Z"},"content_sha256":"f6d4353aa73a711fd48a19bc448a76044ff48a244c36b79da2145fe4d3d2dff8","schema_version":"1.0","event_id":"sha256:f6d4353aa73a711fd48a19bc448a76044ff48a244c36b79da2145fe4d3d2dff8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PAAZVUCAD5WSC4DL4NQKK3YFNT/bundle.json","state_url":"https://pith.science/pith/PAAZVUCAD5WSC4DL4NQKK3YFNT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PAAZVUCAD5WSC4DL4NQKK3YFNT/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":"2026-07-24T04:04:42Z","links":{"resolver":"https://pith.science/pith/PAAZVUCAD5WSC4DL4NQKK3YFNT","bundle":"https://pith.science/pith/PAAZVUCAD5WSC4DL4NQKK3YFNT/bundle.json","state":"https://pith.science/pith/PAAZVUCAD5WSC4DL4NQKK3YFNT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PAAZVUCAD5WSC4DL4NQKK3YFNT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:PAAZVUCAD5WSC4DL4NQKK3YFNT","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":"58f79b1c58654a7ac9b90358736279fdd5768010a6e54e39caf3a2683c24b861","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2021-12-09T12:39:55Z","title_canon_sha256":"a38fb7c33992e6def299675532406b23d9bc34a9283c8bb95a0954155844dea1"},"schema_version":"1.0","source":{"id":"2112.04869","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.04869","created_at":"2026-07-05T03:56:53Z"},{"alias_kind":"arxiv_version","alias_value":"2112.04869v1","created_at":"2026-07-05T03:56:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.04869","created_at":"2026-07-05T03:56:53Z"},{"alias_kind":"pith_short_12","alias_value":"PAAZVUCAD5WS","created_at":"2026-07-05T03:56:53Z"},{"alias_kind":"pith_short_16","alias_value":"PAAZVUCAD5WSC4DL","created_at":"2026-07-05T03:56:53Z"},{"alias_kind":"pith_short_8","alias_value":"PAAZVUCA","created_at":"2026-07-05T03:56:53Z"}],"graph_snapshots":[{"event_id":"sha256:f6d4353aa73a711fd48a19bc448a76044ff48a244c36b79da2145fe4d3d2dff8","target":"graph","created_at":"2026-07-05T03:56:53Z","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/2112.04869/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Controlling spin wave excitations in magnetic materials underpins the burgeoning field of magnonics. Yet, little is known about how magnons interact with the conduction electrons of itinerant magnets, or how this interplay can be controlled. Via a surface-sensitive spectroscopic approach, we demonstrate a strong and highly-tuneable electron-magnon coupling at the Pd-terminated surface of the delafossite oxide PdCoO$_2$, where a polar surface charge mediates a Stoner transition to itinerant surface ferromagnetism. We show how the coupling can be enhanced 7-fold with increasing surface disorder,","authors_text":"Andrew P. Mackenzie, Chi-Ming Yim, Dibyashree Chakraborti, Federico Mazzola, Igor Markovi\\'c, Lewis Bawden, Moritz Hoesch, Oliver J. Clark, Pallavi Kushwaha, Peter Wahl, Philip D. C. King, Seunghyun Khim, Timur K. Kim, Veronika Sunko","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2021-12-09T12:39:55Z","title":"Tuneable electron-magnon coupling of ferromagnetic surface states in PdCoO$_2$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.04869","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:e436d31a17f777539c4d1241fd4f446a5edb090f4d37d7422de11d41911ac2a3","target":"record","created_at":"2026-07-05T03:56:53Z","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":"58f79b1c58654a7ac9b90358736279fdd5768010a6e54e39caf3a2683c24b861","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.str-el","submitted_at":"2021-12-09T12:39:55Z","title_canon_sha256":"a38fb7c33992e6def299675532406b23d9bc34a9283c8bb95a0954155844dea1"},"schema_version":"1.0","source":{"id":"2112.04869","kind":"arxiv","version":1}},"canonical_sha256":"78019ad0401f6d21706be360a56f056cfbd969adc452e6a7f1b8be4f0eb9e1b4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"78019ad0401f6d21706be360a56f056cfbd969adc452e6a7f1b8be4f0eb9e1b4","first_computed_at":"2026-07-05T03:56:53.200131Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:56:53.200131Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uDdfFWzcoJTfQC9eMXUIbeUiLG4cRPwMMRAkPnOLxnbi3+6+nYPOQ1c5jEx+uHzXshbT2D8qwYt3bjVh5p5BCg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:56:53.200518Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.04869","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e436d31a17f777539c4d1241fd4f446a5edb090f4d37d7422de11d41911ac2a3","sha256:f6d4353aa73a711fd48a19bc448a76044ff48a244c36b79da2145fe4d3d2dff8"],"state_sha256":"007dc362e6c43e500a63406a5701eacda3c5a8fc2d498a4dccdc19e78fafd5dc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"khtQfy6sl0rUxbZN2OSdjDXImUwCRSgl6brbTeO9Mi9jf5ynpuY53/wiDeW0sjeqIFGHtXzGb0sl4Z1LKRltDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-24T04:04:42.671171Z","bundle_sha256":"0a701848a1037f9c5f85e0538e62db09ae791e232d34fcc262b9ef2f9e0599b3"}}