{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:BU2L5623ZBACTCS6AMAK5M4U6G","short_pith_number":"pith:BU2L5623","canonical_record":{"source":{"id":"1806.03092","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-06-08T11:28:52Z","cross_cats_sorted":[],"title_canon_sha256":"eb0d657bb11b6088fbfccb043ed41eb002ddae6cad191a3e2cb0660f603a87b1","abstract_canon_sha256":"2b249ffe330665b703e06a7acd8fe06a6b9f92884e8d148132438a77edf55ade"},"schema_version":"1.0"},"canonical_sha256":"0d34befb5bc840298a5e0300aeb394f199d6fdf5db8c4d19e2034e98a0b5d284","source":{"kind":"arxiv","id":"1806.03092","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.03092","created_at":"2026-05-18T00:13:49Z"},{"alias_kind":"arxiv_version","alias_value":"1806.03092v1","created_at":"2026-05-18T00:13:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.03092","created_at":"2026-05-18T00:13:49Z"},{"alias_kind":"pith_short_12","alias_value":"BU2L5623ZBAC","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"BU2L5623ZBACTCS6","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"BU2L5623","created_at":"2026-05-18T12:32:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:BU2L5623ZBACTCS6AMAK5M4U6G","target":"record","payload":{"canonical_record":{"source":{"id":"1806.03092","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-06-08T11:28:52Z","cross_cats_sorted":[],"title_canon_sha256":"eb0d657bb11b6088fbfccb043ed41eb002ddae6cad191a3e2cb0660f603a87b1","abstract_canon_sha256":"2b249ffe330665b703e06a7acd8fe06a6b9f92884e8d148132438a77edf55ade"},"schema_version":"1.0"},"canonical_sha256":"0d34befb5bc840298a5e0300aeb394f199d6fdf5db8c4d19e2034e98a0b5d284","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:13:49.695270Z","signature_b64":"OS5szkQrW5glNNqEhig71JmDfUotJfNVxO3tuXfaw499Vdxww4ewGDaxWvJv5KKrTmeLkIeffCppXdVHBKVjCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0d34befb5bc840298a5e0300aeb394f199d6fdf5db8c4d19e2034e98a0b5d284","last_reissued_at":"2026-05-18T00:13:49.694581Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:13:49.694581Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1806.03092","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":"2026-05-18T00:13:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bWN+Kt08iOjKTGzkfwU//3pCJnt8ZSjn0yj8K5TnDWNuBVdwPdLRIIkOXwGTw1zqGmJYej8wZ7BvUYvWqVYoAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T11:38:47.480599Z"},"content_sha256":"f722f50a0de6c90952e055633262198469a198ea59a463042ed61bcbdc8a3612","schema_version":"1.0","event_id":"sha256:f722f50a0de6c90952e055633262198469a198ea59a463042ed61bcbdc8a3612"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:BU2L5623ZBACTCS6AMAK5M4U6G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optically-detected long-lived spin coherence in multilayer systems: Double and triple quantum wells","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"A. K. Bakarov, F. G. G. Hernandez, G. M. Gusev, S. Ullah","submitted_at":"2018-06-08T11:28:52Z","abstract_excerpt":"In this contribution, we investigated the spin coherence of high-mobility dense two-dimensional electron gases confined in multilayer systems. The dynamics of optically-induced spin polarization was experimentally studied employing the time-resolved Kerr rotation and resonant spin amplification techniques. For both the double and triple quantum wells doped beyond the metal-insulator transition, where the spin coherence is greatly suppressed, we found remarkably long spin lifetimes limited by the Dyakonov-Perel mechanism and spin hopping process between the donor sites as well as the spread of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.03092","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":"2026-05-18T00:13:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"arUlWmhoWdxjKWkonV93Mh+rSrToAXgazDEWZWD8QWE2R1Fu/+0nAV58NjgWwiPeYbtK+JJ7g9uaE/MskjcRDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T11:38:47.481144Z"},"content_sha256":"da76dd847a323a196c8de9a7d6f023fa794b14002af0306733f50049ffd51a04","schema_version":"1.0","event_id":"sha256:da76dd847a323a196c8de9a7d6f023fa794b14002af0306733f50049ffd51a04"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BU2L5623ZBACTCS6AMAK5M4U6G/bundle.json","state_url":"https://pith.science/pith/BU2L5623ZBACTCS6AMAK5M4U6G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BU2L5623ZBACTCS6AMAK5M4U6G/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":"2026-06-07T11:38:47Z","links":{"resolver":"https://pith.science/pith/BU2L5623ZBACTCS6AMAK5M4U6G","bundle":"https://pith.science/pith/BU2L5623ZBACTCS6AMAK5M4U6G/bundle.json","state":"https://pith.science/pith/BU2L5623ZBACTCS6AMAK5M4U6G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BU2L5623ZBACTCS6AMAK5M4U6G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:BU2L5623ZBACTCS6AMAK5M4U6G","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":"2b249ffe330665b703e06a7acd8fe06a6b9f92884e8d148132438a77edf55ade","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-06-08T11:28:52Z","title_canon_sha256":"eb0d657bb11b6088fbfccb043ed41eb002ddae6cad191a3e2cb0660f603a87b1"},"schema_version":"1.0","source":{"id":"1806.03092","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.03092","created_at":"2026-05-18T00:13:49Z"},{"alias_kind":"arxiv_version","alias_value":"1806.03092v1","created_at":"2026-05-18T00:13:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.03092","created_at":"2026-05-18T00:13:49Z"},{"alias_kind":"pith_short_12","alias_value":"BU2L5623ZBAC","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"BU2L5623ZBACTCS6","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"BU2L5623","created_at":"2026-05-18T12:32:16Z"}],"graph_snapshots":[{"event_id":"sha256:da76dd847a323a196c8de9a7d6f023fa794b14002af0306733f50049ffd51a04","target":"graph","created_at":"2026-05-18T00:13:49Z","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":"In this contribution, we investigated the spin coherence of high-mobility dense two-dimensional electron gases confined in multilayer systems. The dynamics of optically-induced spin polarization was experimentally studied employing the time-resolved Kerr rotation and resonant spin amplification techniques. For both the double and triple quantum wells doped beyond the metal-insulator transition, where the spin coherence is greatly suppressed, we found remarkably long spin lifetimes limited by the Dyakonov-Perel mechanism and spin hopping process between the donor sites as well as the spread of ","authors_text":"A. K. Bakarov, F. G. G. Hernandez, G. M. Gusev, S. Ullah","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-06-08T11:28:52Z","title":"Optically-detected long-lived spin coherence in multilayer systems: Double and triple quantum wells"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.03092","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:f722f50a0de6c90952e055633262198469a198ea59a463042ed61bcbdc8a3612","target":"record","created_at":"2026-05-18T00:13:49Z","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":"2b249ffe330665b703e06a7acd8fe06a6b9f92884e8d148132438a77edf55ade","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-06-08T11:28:52Z","title_canon_sha256":"eb0d657bb11b6088fbfccb043ed41eb002ddae6cad191a3e2cb0660f603a87b1"},"schema_version":"1.0","source":{"id":"1806.03092","kind":"arxiv","version":1}},"canonical_sha256":"0d34befb5bc840298a5e0300aeb394f199d6fdf5db8c4d19e2034e98a0b5d284","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0d34befb5bc840298a5e0300aeb394f199d6fdf5db8c4d19e2034e98a0b5d284","first_computed_at":"2026-05-18T00:13:49.694581Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:13:49.694581Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OS5szkQrW5glNNqEhig71JmDfUotJfNVxO3tuXfaw499Vdxww4ewGDaxWvJv5KKrTmeLkIeffCppXdVHBKVjCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:13:49.695270Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.03092","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f722f50a0de6c90952e055633262198469a198ea59a463042ed61bcbdc8a3612","sha256:da76dd847a323a196c8de9a7d6f023fa794b14002af0306733f50049ffd51a04"],"state_sha256":"4b1b36de1d8fad64a8281425bf0160165e990151f43abaea7eecb35ac896272a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dTgV5QojjZAJUHy0sqllHmi60ALJ8jz40cNgoO4g5aasMEP7Sq+NKpYqsemQ0NHA6juDOhkoj51QMosPV/ICAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T11:38:47.483682Z","bundle_sha256":"166352491b845b3950b91aba6a6d119b44329823d4629bd8a466c947b6a3ed36"}}