{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:SCK3DZDSWEXTJXXPXHZ4MHF7KR","short_pith_number":"pith:SCK3DZDS","canonical_record":{"source":{"id":"1706.05776","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-06-19T04:13:10Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"e4c8ee0462951f7ffa3740dac5d8e26a4892c7e0d0432676f98b622c92416741","abstract_canon_sha256":"e105a8da253b6d7c944fd9f8d1aceed2eb80804876b9dff3d125daa02a4c1ab9"},"schema_version":"1.0"},"canonical_sha256":"9095b1e472b12f34deefb9f3c61cbf5444949676596abb184fcb583d783b4bda","source":{"kind":"arxiv","id":"1706.05776","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.05776","created_at":"2026-05-18T00:33:49Z"},{"alias_kind":"arxiv_version","alias_value":"1706.05776v3","created_at":"2026-05-18T00:33:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.05776","created_at":"2026-05-18T00:33:49Z"},{"alias_kind":"pith_short_12","alias_value":"SCK3DZDSWEXT","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SCK3DZDSWEXTJXXP","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SCK3DZDS","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:SCK3DZDSWEXTJXXPXHZ4MHF7KR","target":"record","payload":{"canonical_record":{"source":{"id":"1706.05776","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-06-19T04:13:10Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"e4c8ee0462951f7ffa3740dac5d8e26a4892c7e0d0432676f98b622c92416741","abstract_canon_sha256":"e105a8da253b6d7c944fd9f8d1aceed2eb80804876b9dff3d125daa02a4c1ab9"},"schema_version":"1.0"},"canonical_sha256":"9095b1e472b12f34deefb9f3c61cbf5444949676596abb184fcb583d783b4bda","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:33:49.445344Z","signature_b64":"5rzZrX4lK9uS+YG37Llz5U0GdOQLrD3I4NIUbM4N8uM8dWORxDlwpImgc2GlrKrJsdc23IJc8sI/+0ES8TN7CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9095b1e472b12f34deefb9f3c61cbf5444949676596abb184fcb583d783b4bda","last_reissued_at":"2026-05-18T00:33:49.444836Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:33:49.444836Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1706.05776","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:33:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rZQP5nTRpAXntW1NZ0rH73jdavdth3aPwGUSuBuIimN7GM1c8iVBUZS+Ga6jyD1wF/JbD8NQuxuBJzOK5LLVDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T07:19:53.745387Z"},"content_sha256":"bd13d20637d973d5d0881deb6f18a75d9d47ac1382f006ccc02c964b4a9d2269","schema_version":"1.0","event_id":"sha256:bd13d20637d973d5d0881deb6f18a75d9d47ac1382f006ccc02c964b4a9d2269"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:SCK3DZDSWEXTJXXPXHZ4MHF7KR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chiral Spin Mode on the Surface of a Topological Insulator","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"D. L. Maslov, G. Blumberg, H.-H. Kung, S. Maiti, S.-W. Cheong, X. Wang","submitted_at":"2017-06-19T04:13:10Z","abstract_excerpt":"Using polarization-resolved resonant Raman spectroscopy, we explore collective spin excitations of the chiral surface states in a three dimensional topological insulator, Bi$_2$Se$_3$. We observe a sharp peak at 150 meV in the pseudovector $A_2$ symmetry channel of the Raman spectra. By comparing the data with calculations, we identify this peak as the transverse collective spin mode of surface Dirac fermions. This mode, unlike a Dirac plasmon or a surface plasmon in the charge sector of excitations, is analogous to a spin wave in a partially polarized Fermi liquid, with spin-orbit coupling pl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.05776","kind":"arxiv","version":3},"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":"2026-05-18T00:33:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fKrdHCy0vRFL+g9FYIyWLu6YYWGKSo7q+99zhoiIeR0NNf32duWyL06AMMmrotI16uJvb8dCA7jN/0dqpckaDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T07:19:53.745803Z"},"content_sha256":"ac0b794f26185d5b9f97892d7919a56bb7c6b0f665c6ccc320072f5089d66db8","schema_version":"1.0","event_id":"sha256:ac0b794f26185d5b9f97892d7919a56bb7c6b0f665c6ccc320072f5089d66db8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SCK3DZDSWEXTJXXPXHZ4MHF7KR/bundle.json","state_url":"https://pith.science/pith/SCK3DZDSWEXTJXXPXHZ4MHF7KR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SCK3DZDSWEXTJXXPXHZ4MHF7KR/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":"2026-06-07T07:19:53Z","links":{"resolver":"https://pith.science/pith/SCK3DZDSWEXTJXXPXHZ4MHF7KR","bundle":"https://pith.science/pith/SCK3DZDSWEXTJXXPXHZ4MHF7KR/bundle.json","state":"https://pith.science/pith/SCK3DZDSWEXTJXXPXHZ4MHF7KR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SCK3DZDSWEXTJXXPXHZ4MHF7KR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:SCK3DZDSWEXTJXXPXHZ4MHF7KR","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":"e105a8da253b6d7c944fd9f8d1aceed2eb80804876b9dff3d125daa02a4c1ab9","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-06-19T04:13:10Z","title_canon_sha256":"e4c8ee0462951f7ffa3740dac5d8e26a4892c7e0d0432676f98b622c92416741"},"schema_version":"1.0","source":{"id":"1706.05776","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.05776","created_at":"2026-05-18T00:33:49Z"},{"alias_kind":"arxiv_version","alias_value":"1706.05776v3","created_at":"2026-05-18T00:33:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.05776","created_at":"2026-05-18T00:33:49Z"},{"alias_kind":"pith_short_12","alias_value":"SCK3DZDSWEXT","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SCK3DZDSWEXTJXXP","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SCK3DZDS","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:ac0b794f26185d5b9f97892d7919a56bb7c6b0f665c6ccc320072f5089d66db8","target":"graph","created_at":"2026-05-18T00:33:49Z","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":"Using polarization-resolved resonant Raman spectroscopy, we explore collective spin excitations of the chiral surface states in a three dimensional topological insulator, Bi$_2$Se$_3$. We observe a sharp peak at 150 meV in the pseudovector $A_2$ symmetry channel of the Raman spectra. By comparing the data with calculations, we identify this peak as the transverse collective spin mode of surface Dirac fermions. This mode, unlike a Dirac plasmon or a surface plasmon in the charge sector of excitations, is analogous to a spin wave in a partially polarized Fermi liquid, with spin-orbit coupling pl","authors_text":"D. L. Maslov, G. Blumberg, H.-H. Kung, S. Maiti, S.-W. Cheong, X. Wang","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-06-19T04:13:10Z","title":"Chiral Spin Mode on the Surface of a Topological Insulator"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.05776","kind":"arxiv","version":3},"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:bd13d20637d973d5d0881deb6f18a75d9d47ac1382f006ccc02c964b4a9d2269","target":"record","created_at":"2026-05-18T00:33:49Z","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":"e105a8da253b6d7c944fd9f8d1aceed2eb80804876b9dff3d125daa02a4c1ab9","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2017-06-19T04:13:10Z","title_canon_sha256":"e4c8ee0462951f7ffa3740dac5d8e26a4892c7e0d0432676f98b622c92416741"},"schema_version":"1.0","source":{"id":"1706.05776","kind":"arxiv","version":3}},"canonical_sha256":"9095b1e472b12f34deefb9f3c61cbf5444949676596abb184fcb583d783b4bda","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9095b1e472b12f34deefb9f3c61cbf5444949676596abb184fcb583d783b4bda","first_computed_at":"2026-05-18T00:33:49.444836Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:33:49.444836Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5rzZrX4lK9uS+YG37Llz5U0GdOQLrD3I4NIUbM4N8uM8dWORxDlwpImgc2GlrKrJsdc23IJc8sI/+0ES8TN7CA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:33:49.445344Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.05776","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bd13d20637d973d5d0881deb6f18a75d9d47ac1382f006ccc02c964b4a9d2269","sha256:ac0b794f26185d5b9f97892d7919a56bb7c6b0f665c6ccc320072f5089d66db8"],"state_sha256":"bf62ba4aa35e992ec84834761fa6e50526772fd7b548208da85c247fa35203e8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qios/CVQQbAdB8YoqefUZIvlV23ECSikWUvIsR9xfaoFOAhWnlQV/KwDww0vaSif57g0eb0pH8AUpkhzTWegBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T07:19:53.748022Z","bundle_sha256":"0e248ed4b6557a3b9d3cf43b75a8fb661638afe2eb1a3d602a30a2501bbb3c94"}}