{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:WTPY6TRK3PDVU7VQJM7EOXX2QK","short_pith_number":"pith:WTPY6TRK","canonical_record":{"source":{"id":"0903.1232","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-03-06T15:48:03Z","cross_cats_sorted":[],"title_canon_sha256":"a8baef0a73fa57c6929c118c08955b555c44059ecb355fe3f67df3892255c040","abstract_canon_sha256":"8c2469e8539726aef9757bf84d99024fe962d042836b2baffa4db59275d2c3cd"},"schema_version":"1.0"},"canonical_sha256":"b4df8f4e2adbc75a7eb04b3e475efa8297aaec319ea8a22409c7b9e511a6fee2","source":{"kind":"arxiv","id":"0903.1232","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.1232","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"arxiv_version","alias_value":"0903.1232v1","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.1232","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"pith_short_12","alias_value":"WTPY6TRK3PDV","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"WTPY6TRK3PDVU7VQ","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"WTPY6TRK","created_at":"2026-05-18T12:26:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:WTPY6TRK3PDVU7VQJM7EOXX2QK","target":"record","payload":{"canonical_record":{"source":{"id":"0903.1232","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-03-06T15:48:03Z","cross_cats_sorted":[],"title_canon_sha256":"a8baef0a73fa57c6929c118c08955b555c44059ecb355fe3f67df3892255c040","abstract_canon_sha256":"8c2469e8539726aef9757bf84d99024fe962d042836b2baffa4db59275d2c3cd"},"schema_version":"1.0"},"canonical_sha256":"b4df8f4e2adbc75a7eb04b3e475efa8297aaec319ea8a22409c7b9e511a6fee2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:14:36.826976Z","signature_b64":"3//AldVfcb+1+r0rpPkarIcxVFBoyopHKlPY9WEZEd0Tu0WRnzmLjGVoF7z+6XnL/43QnmdIbqRkHU9CIROLDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b4df8f4e2adbc75a7eb04b3e475efa8297aaec319ea8a22409c7b9e511a6fee2","last_reissued_at":"2026-05-18T02:14:36.826275Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:14:36.826275Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0903.1232","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":"2026-05-18T02:14:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YYPQXyckdJRTb80jQF3fjvtvfACopaSfHo7WnOCg4la+vCnaLdikMGppclUdlAjAMcLfV2+GO7Sn++RYRTXXCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T12:20:20.178779Z"},"content_sha256":"6bb4898ef92a894a1c27e8441043c6e9a4cc8a8eb2cfd4c2c1d0f1f2df62e9a2","schema_version":"1.0","event_id":"sha256:6bb4898ef92a894a1c27e8441043c6e9a4cc8a8eb2cfd4c2c1d0f1f2df62e9a2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:WTPY6TRK3PDVU7VQJM7EOXX2QK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tuning of structure inversion asymmetry by the $\\delta$-doping position in (001)-grown GaAs quantum wells","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"D. Schuh, L.E. Golub, P. Olbrich, S.D. Ganichev, S. Stachel, V. Lechner, V.V. Bel'kov, W. Wegscheider","submitted_at":"2009-03-06T15:48:03Z","abstract_excerpt":"Structure and bulk inversion asymmetry in doped (001)-grown GaAs quantum wells is investigated by applying the magnetic field induced photogalvanic effect. We demonstrate that the structure inversion asymmetry (SIA) can be tailored by variation of the delta-doping layer position. Symmetrically-doped structures exhibit a substantial SIA due to impurity segregation during the growth process. Tuning the SIA by the delta-doping position we grow samples with almost equal degrees of structure and bulk inversion asymmetry."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.1232","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":"2026-05-18T02:14:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TS9bwMFFtCiqh/MblqotT9BTwV2Hd4Bxc0zMBwPKzB7+EAShEcKDowGzRAUlyIiHFffJhpoHikEnH810eKEKBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T12:20:20.179488Z"},"content_sha256":"dd28f4154ce5a156d34c3f30c191e4f411e9036bb24d649b3ffee6f7db211d5c","schema_version":"1.0","event_id":"sha256:dd28f4154ce5a156d34c3f30c191e4f411e9036bb24d649b3ffee6f7db211d5c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WTPY6TRK3PDVU7VQJM7EOXX2QK/bundle.json","state_url":"https://pith.science/pith/WTPY6TRK3PDVU7VQJM7EOXX2QK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WTPY6TRK3PDVU7VQJM7EOXX2QK/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":"2026-05-27T12:20:20Z","links":{"resolver":"https://pith.science/pith/WTPY6TRK3PDVU7VQJM7EOXX2QK","bundle":"https://pith.science/pith/WTPY6TRK3PDVU7VQJM7EOXX2QK/bundle.json","state":"https://pith.science/pith/WTPY6TRK3PDVU7VQJM7EOXX2QK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WTPY6TRK3PDVU7VQJM7EOXX2QK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:WTPY6TRK3PDVU7VQJM7EOXX2QK","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":"8c2469e8539726aef9757bf84d99024fe962d042836b2baffa4db59275d2c3cd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-03-06T15:48:03Z","title_canon_sha256":"a8baef0a73fa57c6929c118c08955b555c44059ecb355fe3f67df3892255c040"},"schema_version":"1.0","source":{"id":"0903.1232","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.1232","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"arxiv_version","alias_value":"0903.1232v1","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.1232","created_at":"2026-05-18T02:14:36Z"},{"alias_kind":"pith_short_12","alias_value":"WTPY6TRK3PDV","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"WTPY6TRK3PDVU7VQ","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"WTPY6TRK","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:dd28f4154ce5a156d34c3f30c191e4f411e9036bb24d649b3ffee6f7db211d5c","target":"graph","created_at":"2026-05-18T02:14:36Z","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":"Structure and bulk inversion asymmetry in doped (001)-grown GaAs quantum wells is investigated by applying the magnetic field induced photogalvanic effect. We demonstrate that the structure inversion asymmetry (SIA) can be tailored by variation of the delta-doping layer position. Symmetrically-doped structures exhibit a substantial SIA due to impurity segregation during the growth process. Tuning the SIA by the delta-doping position we grow samples with almost equal degrees of structure and bulk inversion asymmetry.","authors_text":"D. Schuh, L.E. Golub, P. Olbrich, S.D. Ganichev, S. Stachel, V. Lechner, V.V. Bel'kov, W. Wegscheider","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-03-06T15:48:03Z","title":"Tuning of structure inversion asymmetry by the $\\delta$-doping position in (001)-grown GaAs quantum wells"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.1232","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":"sha256:6bb4898ef92a894a1c27e8441043c6e9a4cc8a8eb2cfd4c2c1d0f1f2df62e9a2","target":"record","created_at":"2026-05-18T02:14:36Z","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":"8c2469e8539726aef9757bf84d99024fe962d042836b2baffa4db59275d2c3cd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-03-06T15:48:03Z","title_canon_sha256":"a8baef0a73fa57c6929c118c08955b555c44059ecb355fe3f67df3892255c040"},"schema_version":"1.0","source":{"id":"0903.1232","kind":"arxiv","version":1}},"canonical_sha256":"b4df8f4e2adbc75a7eb04b3e475efa8297aaec319ea8a22409c7b9e511a6fee2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b4df8f4e2adbc75a7eb04b3e475efa8297aaec319ea8a22409c7b9e511a6fee2","first_computed_at":"2026-05-18T02:14:36.826275Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:14:36.826275Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3//AldVfcb+1+r0rpPkarIcxVFBoyopHKlPY9WEZEd0Tu0WRnzmLjGVoF7z+6XnL/43QnmdIbqRkHU9CIROLDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:14:36.826976Z","signed_message":"canonical_sha256_bytes"},"source_id":"0903.1232","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6bb4898ef92a894a1c27e8441043c6e9a4cc8a8eb2cfd4c2c1d0f1f2df62e9a2","sha256:dd28f4154ce5a156d34c3f30c191e4f411e9036bb24d649b3ffee6f7db211d5c"],"state_sha256":"e49abf4caab6241abfc462121f37cb1b3bb24a61eb36a8b7a02ae266d54ec3f6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vc2GENr+sQmgnkPS+B9pV85k4gy8kSBwyP806cWxIUIkXut5v/ffJtorzygAR/2u6w+WZG2GpfKKC1MqpMAdDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T12:20:20.183101Z","bundle_sha256":"a3963c540d5815e1e92067dc5fd18add610805d8947aa1ab7e5606bf2b4b7e54"}}