{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:CCXQ7352LIHL2UIEJT7MDC6JXH","short_pith_number":"pith:CCXQ7352","canonical_record":{"source":{"id":"1207.7259","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-07-31T14:35:23Z","cross_cats_sorted":[],"title_canon_sha256":"8a85fd91b6f298abe341b95d8728ac135f8259449d24124b39b047fce4b529e1","abstract_canon_sha256":"fc755ab152141e7c1436310f06e2ade7afdcdb3d26e3355ef89f8b6b6233d5b6"},"schema_version":"1.0"},"canonical_sha256":"10af0fefba5a0ebd51044cfec18bc9b9d71f25e0c6147d278f37f0664e931028","source":{"kind":"arxiv","id":"1207.7259","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.7259","created_at":"2026-05-18T03:26:41Z"},{"alias_kind":"arxiv_version","alias_value":"1207.7259v1","created_at":"2026-05-18T03:26:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.7259","created_at":"2026-05-18T03:26:41Z"},{"alias_kind":"pith_short_12","alias_value":"CCXQ7352LIHL","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"CCXQ7352LIHL2UIE","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"CCXQ7352","created_at":"2026-05-18T12:27:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:CCXQ7352LIHL2UIEJT7MDC6JXH","target":"record","payload":{"canonical_record":{"source":{"id":"1207.7259","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-07-31T14:35:23Z","cross_cats_sorted":[],"title_canon_sha256":"8a85fd91b6f298abe341b95d8728ac135f8259449d24124b39b047fce4b529e1","abstract_canon_sha256":"fc755ab152141e7c1436310f06e2ade7afdcdb3d26e3355ef89f8b6b6233d5b6"},"schema_version":"1.0"},"canonical_sha256":"10af0fefba5a0ebd51044cfec18bc9b9d71f25e0c6147d278f37f0664e931028","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:26:41.241295Z","signature_b64":"guEqDX4wgjLImhC5/7JZefLrs2OlD83cDbWiJ6arxIIOm+zxX2GhJVcp4hsZbxwNwli5p4oKtnBOPHVq5PEWBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"10af0fefba5a0ebd51044cfec18bc9b9d71f25e0c6147d278f37f0664e931028","last_reissued_at":"2026-05-18T03:26:41.240580Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:26:41.240580Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.7259","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":"2026-05-18T03:26:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WsG4Gn0ZCVbBzdMoPSB3PP4aTZJnMXno8oShHXdsYqpPmCMTVizm4a9UIH8k98Q/dD9s+0RQUBGr5gtzv2ZhAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T21:29:22.141357Z"},"content_sha256":"d0f1e297c8f2de24d672b1882079a39e855ac3ba5e94f4e12bcd240fd7522aaf","schema_version":"1.0","event_id":"sha256:d0f1e297c8f2de24d672b1882079a39e855ac3ba5e94f4e12bcd240fd7522aaf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:CCXQ7352LIHL2UIEJT7MDC6JXH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Backscattering Between Helical Edge States via Dynamic Nuclear Polarization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Adrian Del Maestro, Bernd Rosenow, Timo Hyart","submitted_at":"2012-07-31T14:35:23Z","abstract_excerpt":"We show that that the non-equilibrium spin polarization of one dimensional helical edge states at the boundary of a two dimensional topological insulator can dynamically induce a polarization of nuclei via the hyperfine interaction. When combined with a spatially inhomogeneous Rashba coupling, the steady state polarization of the nuclei produces backscattering between the topologically protected edge states leading to a reduction in the conductance which persists to zero temperature. We study these effects in both short and long edges, uncovering deviations from Ohmic transport at finite tempe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.7259","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":"2026-05-18T03:26:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4xyoL8wQR/quzotNVHD/GexkM4bQzs+C4lkfyby/aqD/qv6RGUYmvqUZ8znJiiEOTsQF+KtqPiIOoBmwaKPtBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T21:29:22.141708Z"},"content_sha256":"ea15e44d5481325129f118a8730b327067dc34514e57a1154a5f0d8417bc5b34","schema_version":"1.0","event_id":"sha256:ea15e44d5481325129f118a8730b327067dc34514e57a1154a5f0d8417bc5b34"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CCXQ7352LIHL2UIEJT7MDC6JXH/bundle.json","state_url":"https://pith.science/pith/CCXQ7352LIHL2UIEJT7MDC6JXH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CCXQ7352LIHL2UIEJT7MDC6JXH/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":"2026-06-01T21:29:22Z","links":{"resolver":"https://pith.science/pith/CCXQ7352LIHL2UIEJT7MDC6JXH","bundle":"https://pith.science/pith/CCXQ7352LIHL2UIEJT7MDC6JXH/bundle.json","state":"https://pith.science/pith/CCXQ7352LIHL2UIEJT7MDC6JXH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CCXQ7352LIHL2UIEJT7MDC6JXH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:CCXQ7352LIHL2UIEJT7MDC6JXH","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":"fc755ab152141e7c1436310f06e2ade7afdcdb3d26e3355ef89f8b6b6233d5b6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-07-31T14:35:23Z","title_canon_sha256":"8a85fd91b6f298abe341b95d8728ac135f8259449d24124b39b047fce4b529e1"},"schema_version":"1.0","source":{"id":"1207.7259","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.7259","created_at":"2026-05-18T03:26:41Z"},{"alias_kind":"arxiv_version","alias_value":"1207.7259v1","created_at":"2026-05-18T03:26:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.7259","created_at":"2026-05-18T03:26:41Z"},{"alias_kind":"pith_short_12","alias_value":"CCXQ7352LIHL","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"CCXQ7352LIHL2UIE","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"CCXQ7352","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:ea15e44d5481325129f118a8730b327067dc34514e57a1154a5f0d8417bc5b34","target":"graph","created_at":"2026-05-18T03:26:41Z","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 show that that the non-equilibrium spin polarization of one dimensional helical edge states at the boundary of a two dimensional topological insulator can dynamically induce a polarization of nuclei via the hyperfine interaction. When combined with a spatially inhomogeneous Rashba coupling, the steady state polarization of the nuclei produces backscattering between the topologically protected edge states leading to a reduction in the conductance which persists to zero temperature. We study these effects in both short and long edges, uncovering deviations from Ohmic transport at finite tempe","authors_text":"Adrian Del Maestro, Bernd Rosenow, Timo Hyart","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-07-31T14:35:23Z","title":"Backscattering Between Helical Edge States via Dynamic Nuclear Polarization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.7259","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:d0f1e297c8f2de24d672b1882079a39e855ac3ba5e94f4e12bcd240fd7522aaf","target":"record","created_at":"2026-05-18T03:26:41Z","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":"fc755ab152141e7c1436310f06e2ade7afdcdb3d26e3355ef89f8b6b6233d5b6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-07-31T14:35:23Z","title_canon_sha256":"8a85fd91b6f298abe341b95d8728ac135f8259449d24124b39b047fce4b529e1"},"schema_version":"1.0","source":{"id":"1207.7259","kind":"arxiv","version":1}},"canonical_sha256":"10af0fefba5a0ebd51044cfec18bc9b9d71f25e0c6147d278f37f0664e931028","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"10af0fefba5a0ebd51044cfec18bc9b9d71f25e0c6147d278f37f0664e931028","first_computed_at":"2026-05-18T03:26:41.240580Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:26:41.240580Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"guEqDX4wgjLImhC5/7JZefLrs2OlD83cDbWiJ6arxIIOm+zxX2GhJVcp4hsZbxwNwli5p4oKtnBOPHVq5PEWBA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:26:41.241295Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.7259","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d0f1e297c8f2de24d672b1882079a39e855ac3ba5e94f4e12bcd240fd7522aaf","sha256:ea15e44d5481325129f118a8730b327067dc34514e57a1154a5f0d8417bc5b34"],"state_sha256":"de33d831a971f82506ba3e661ecf506f9ceb4d856bd750172e403d24ea22052c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NCnc4Y6ffyP+czXc0kBu5eLAwyq2JEIOGWQYjZJ9ZcBoEXULVvHVZpccFRH3TZMv2bmV1/wh83OHtbNMlptgBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T21:29:22.143766Z","bundle_sha256":"74b906b0d077ef3a6ed4f298c7fb1abf685cb33a0db3c19f816f8fcd431e9529"}}