{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:NW4X4ZEFW3U6MQLUPO2RSBVDRO","short_pith_number":"pith:NW4X4ZEF","canonical_record":{"source":{"id":"1210.1672","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-05T08:27:20Z","cross_cats_sorted":[],"title_canon_sha256":"8b10d62df0328baf12cabf1d8ffc2ebee8cc57e48569d6ececb38149cc99fe4a","abstract_canon_sha256":"51c86d2ec3fa466fb6e1036aa9b83a7570febecc577f7f3045a617184f44b590"},"schema_version":"1.0"},"canonical_sha256":"6db97e6485b6e9e641747bb51906a38b978e0cdc21a27687b9b0a285773ec634","source":{"kind":"arxiv","id":"1210.1672","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.1672","created_at":"2026-05-18T01:54:05Z"},{"alias_kind":"arxiv_version","alias_value":"1210.1672v1","created_at":"2026-05-18T01:54:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.1672","created_at":"2026-05-18T01:54:05Z"},{"alias_kind":"pith_short_12","alias_value":"NW4X4ZEFW3U6","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"NW4X4ZEFW3U6MQLU","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"NW4X4ZEF","created_at":"2026-05-18T12:27:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:NW4X4ZEFW3U6MQLUPO2RSBVDRO","target":"record","payload":{"canonical_record":{"source":{"id":"1210.1672","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-05T08:27:20Z","cross_cats_sorted":[],"title_canon_sha256":"8b10d62df0328baf12cabf1d8ffc2ebee8cc57e48569d6ececb38149cc99fe4a","abstract_canon_sha256":"51c86d2ec3fa466fb6e1036aa9b83a7570febecc577f7f3045a617184f44b590"},"schema_version":"1.0"},"canonical_sha256":"6db97e6485b6e9e641747bb51906a38b978e0cdc21a27687b9b0a285773ec634","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:05.423944Z","signature_b64":"63yONw/oMKZtFKKtNpfmMMHRb/h+MieiaiBHtVlMrbVzTicDBm4KbYiQcoX0dDXAaoTDiWG9E1wLwAfdbByZDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6db97e6485b6e9e641747bb51906a38b978e0cdc21a27687b9b0a285773ec634","last_reissued_at":"2026-05-18T01:54:05.423391Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:05.423391Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.1672","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":"2026-05-18T01:54:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qkIoqXCXOQ5ZOUxQnZTFoVfdKjoEfzKRky8Sm+gQYJgllhA6W1F8v0wVKROXCeCgHYg8XKqZol1a8H6WmpfQDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T07:17:21.018405Z"},"content_sha256":"99f0a35baa865783a1c112200a786aa92566588a8624ab83f91a8af263d60354","schema_version":"1.0","event_id":"sha256:99f0a35baa865783a1c112200a786aa92566588a8624ab83f91a8af263d60354"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:NW4X4ZEFW3U6MQLUPO2RSBVDRO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Anisotropic Fermi Contour of (001) GaAs Holes in Parallel Magnetic Fields","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"D. Kamburov, K. W. Baldwin, K. W. West, L. N. Pfeiffer, M. Shayegan, R. Winkler","submitted_at":"2012-10-05T08:27:20Z","abstract_excerpt":"We report a severe, spin-dependent, Fermi contour anisotropy induced by parallel magnetic field in a high-mobility (001) GaAs two-dimensional hole system. Employing commensurability oscillations created by a unidirectional, surface-strain-induced, periodic potential modulation, we directly probe the anisotropy of the two spin subband Fermi contours. Their areas are obtained from the Fourier transform of the Shubnikov-de Haas oscillations. Our findings are in semi-quantitative agreement with the results of parameter-free calculations of the energy bands."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.1672","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":"2026-05-18T01:54:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Cw4d63LLhIKbkLFJNzesXALb+7YC+f6WGLdcjnlIDtE/iU8qSVj8ycqKDiSK76MXOVRdpwbEvXrYECV5h2TjDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T07:17:21.019082Z"},"content_sha256":"ab7f74b0ba63f6b8fa22805886cb68a017faa62be81c006649ac556f629745fb","schema_version":"1.0","event_id":"sha256:ab7f74b0ba63f6b8fa22805886cb68a017faa62be81c006649ac556f629745fb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NW4X4ZEFW3U6MQLUPO2RSBVDRO/bundle.json","state_url":"https://pith.science/pith/NW4X4ZEFW3U6MQLUPO2RSBVDRO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NW4X4ZEFW3U6MQLUPO2RSBVDRO/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":"2026-05-25T07:17:21Z","links":{"resolver":"https://pith.science/pith/NW4X4ZEFW3U6MQLUPO2RSBVDRO","bundle":"https://pith.science/pith/NW4X4ZEFW3U6MQLUPO2RSBVDRO/bundle.json","state":"https://pith.science/pith/NW4X4ZEFW3U6MQLUPO2RSBVDRO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NW4X4ZEFW3U6MQLUPO2RSBVDRO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:NW4X4ZEFW3U6MQLUPO2RSBVDRO","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":"51c86d2ec3fa466fb6e1036aa9b83a7570febecc577f7f3045a617184f44b590","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-05T08:27:20Z","title_canon_sha256":"8b10d62df0328baf12cabf1d8ffc2ebee8cc57e48569d6ececb38149cc99fe4a"},"schema_version":"1.0","source":{"id":"1210.1672","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.1672","created_at":"2026-05-18T01:54:05Z"},{"alias_kind":"arxiv_version","alias_value":"1210.1672v1","created_at":"2026-05-18T01:54:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.1672","created_at":"2026-05-18T01:54:05Z"},{"alias_kind":"pith_short_12","alias_value":"NW4X4ZEFW3U6","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"NW4X4ZEFW3U6MQLU","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"NW4X4ZEF","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:ab7f74b0ba63f6b8fa22805886cb68a017faa62be81c006649ac556f629745fb","target":"graph","created_at":"2026-05-18T01:54:05Z","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 report a severe, spin-dependent, Fermi contour anisotropy induced by parallel magnetic field in a high-mobility (001) GaAs two-dimensional hole system. Employing commensurability oscillations created by a unidirectional, surface-strain-induced, periodic potential modulation, we directly probe the anisotropy of the two spin subband Fermi contours. Their areas are obtained from the Fourier transform of the Shubnikov-de Haas oscillations. Our findings are in semi-quantitative agreement with the results of parameter-free calculations of the energy bands.","authors_text":"D. Kamburov, K. W. Baldwin, K. W. West, L. N. Pfeiffer, M. Shayegan, R. Winkler","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-05T08:27:20Z","title":"Anisotropic Fermi Contour of (001) GaAs Holes in Parallel Magnetic Fields"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.1672","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":"sha256:99f0a35baa865783a1c112200a786aa92566588a8624ab83f91a8af263d60354","target":"record","created_at":"2026-05-18T01:54:05Z","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":"51c86d2ec3fa466fb6e1036aa9b83a7570febecc577f7f3045a617184f44b590","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-10-05T08:27:20Z","title_canon_sha256":"8b10d62df0328baf12cabf1d8ffc2ebee8cc57e48569d6ececb38149cc99fe4a"},"schema_version":"1.0","source":{"id":"1210.1672","kind":"arxiv","version":1}},"canonical_sha256":"6db97e6485b6e9e641747bb51906a38b978e0cdc21a27687b9b0a285773ec634","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6db97e6485b6e9e641747bb51906a38b978e0cdc21a27687b9b0a285773ec634","first_computed_at":"2026-05-18T01:54:05.423391Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:05.423391Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"63yONw/oMKZtFKKtNpfmMMHRb/h+MieiaiBHtVlMrbVzTicDBm4KbYiQcoX0dDXAaoTDiWG9E1wLwAfdbByZDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:05.423944Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.1672","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:99f0a35baa865783a1c112200a786aa92566588a8624ab83f91a8af263d60354","sha256:ab7f74b0ba63f6b8fa22805886cb68a017faa62be81c006649ac556f629745fb"],"state_sha256":"866ed5e765645aa114260f91babdf40fdd5bf288ada04860cbf63cedf0c8942c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bYVyWpFx0v1CcpJzhaVbFFnkgVuo5fY/dGZyOEtE4gLVSBQVjtJmRf3DwViTYV+wWYZ60OOreVx7SnBdfvs5Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T07:17:21.023286Z","bundle_sha256":"385ddc09ecec86e1b8e383f9a0634d18c2ba590d31a060967b61442afb11f0fc"}}