{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:WPO634HHJ47YJEJIQYHZVWO7RO","short_pith_number":"pith:WPO634HH","canonical_record":{"source":{"id":"0706.0736","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2007-06-05T20:55:41Z","cross_cats_sorted":[],"title_canon_sha256":"30e9c03560bdf345a9b43fee1dbaa735a244d3d74bebd6bdc2f8ba5762dcbef2","abstract_canon_sha256":"6561a58e83ccec3e3a89b236747c324188ae6f13ec72960f1a1425a7aa16b1b5"},"schema_version":"1.0"},"canonical_sha256":"b3ddedf0e74f3f849128860f9ad9df8ba1a46efd9cebba7f635164cf54784210","source":{"kind":"arxiv","id":"0706.0736","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0706.0736","created_at":"2026-07-04T17:04:05Z"},{"alias_kind":"arxiv_version","alias_value":"0706.0736v1","created_at":"2026-07-04T17:04:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0706.0736","created_at":"2026-07-04T17:04:05Z"},{"alias_kind":"pith_short_12","alias_value":"WPO634HHJ47Y","created_at":"2026-07-04T17:04:05Z"},{"alias_kind":"pith_short_16","alias_value":"WPO634HHJ47YJEJI","created_at":"2026-07-04T17:04:05Z"},{"alias_kind":"pith_short_8","alias_value":"WPO634HH","created_at":"2026-07-04T17:04:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:WPO634HHJ47YJEJIQYHZVWO7RO","target":"record","payload":{"canonical_record":{"source":{"id":"0706.0736","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2007-06-05T20:55:41Z","cross_cats_sorted":[],"title_canon_sha256":"30e9c03560bdf345a9b43fee1dbaa735a244d3d74bebd6bdc2f8ba5762dcbef2","abstract_canon_sha256":"6561a58e83ccec3e3a89b236747c324188ae6f13ec72960f1a1425a7aa16b1b5"},"schema_version":"1.0"},"canonical_sha256":"b3ddedf0e74f3f849128860f9ad9df8ba1a46efd9cebba7f635164cf54784210","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:04:05.459990Z","signature_b64":"VmBSJlXB66Sxshd27zTGEyftc1/XuY+UDmkfkpD3C21Mna59VkDGbcFa4kjXfXIi+fjLHMOF1Zla6TKZCWF4DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b3ddedf0e74f3f849128860f9ad9df8ba1a46efd9cebba7f635164cf54784210","last_reissued_at":"2026-07-04T17:04:05.459645Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:04:05.459645Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0706.0736","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":"2026-07-04T17:04:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q2r1cPUfQChlVshbWSVZx/z8M9d3bDkSmbp+X+xldU+4UaVxWoSAOLZvdy0pSLNfuGB4ljb65TzU3ALmkmSGAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T21:50:01.667009Z"},"content_sha256":"3c2d80db8bebd4fe90949eec93d775c4aa64b18723f6dc2b4ab3eded02a8789f","schema_version":"1.0","event_id":"sha256:3c2d80db8bebd4fe90949eec93d775c4aa64b18723f6dc2b4ab3eded02a8789f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:WPO634HHJ47YJEJIQYHZVWO7RO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Anisotropic low-temperature piezoresistance in (311)A GaAs two-dimensional holes","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"B. Habib, E. P. De Poortere, J. Shabani, M. Shayegan, R. Winkler","submitted_at":"2007-06-05T20:55:41Z","abstract_excerpt":"We report low-temperature resistance measurements in a modulation-doped, (311)A GaAs two-dimensional hole system as a function of applied in-plane strain. The data reveal a strong but anisotropic piezoresistance whose magnitude depends on the density as well as the direction along which the resistance is measured. At a density of $1.6\\times10^{11}$ cm$^{-2}$ and for a strain of about $2\\times10^{-4}$ applied along [01$\\bar{1}$], e.g., the resistance measured along this direction changes by nearly a factor of two while the resistance change in the [$\\bar{2}$33] direction is less than 10% and ha"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0706.0736","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0706.0736/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T17:04:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"foE4RQdXwVfsqL7X6tJBWo1J4M07wPJcC4eZiLN36hIWtwyC+ycNYh4LXJfzttZJhChsmjDe/+iL+x/recKcCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T21:50:01.667716Z"},"content_sha256":"0ab05e60d5155ff727c8f23e3719ed38fd677947b31e157845395e0edf8f2bc2","schema_version":"1.0","event_id":"sha256:0ab05e60d5155ff727c8f23e3719ed38fd677947b31e157845395e0edf8f2bc2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WPO634HHJ47YJEJIQYHZVWO7RO/bundle.json","state_url":"https://pith.science/pith/WPO634HHJ47YJEJIQYHZVWO7RO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WPO634HHJ47YJEJIQYHZVWO7RO/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":"2026-08-13T21:50:01Z","links":{"resolver":"https://pith.science/pith/WPO634HHJ47YJEJIQYHZVWO7RO","bundle":"https://pith.science/pith/WPO634HHJ47YJEJIQYHZVWO7RO/bundle.json","state":"https://pith.science/pith/WPO634HHJ47YJEJIQYHZVWO7RO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WPO634HHJ47YJEJIQYHZVWO7RO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:WPO634HHJ47YJEJIQYHZVWO7RO","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":"6561a58e83ccec3e3a89b236747c324188ae6f13ec72960f1a1425a7aa16b1b5","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2007-06-05T20:55:41Z","title_canon_sha256":"30e9c03560bdf345a9b43fee1dbaa735a244d3d74bebd6bdc2f8ba5762dcbef2"},"schema_version":"1.0","source":{"id":"0706.0736","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0706.0736","created_at":"2026-07-04T17:04:05Z"},{"alias_kind":"arxiv_version","alias_value":"0706.0736v1","created_at":"2026-07-04T17:04:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0706.0736","created_at":"2026-07-04T17:04:05Z"},{"alias_kind":"pith_short_12","alias_value":"WPO634HHJ47Y","created_at":"2026-07-04T17:04:05Z"},{"alias_kind":"pith_short_16","alias_value":"WPO634HHJ47YJEJI","created_at":"2026-07-04T17:04:05Z"},{"alias_kind":"pith_short_8","alias_value":"WPO634HH","created_at":"2026-07-04T17:04:05Z"}],"graph_snapshots":[{"event_id":"sha256:0ab05e60d5155ff727c8f23e3719ed38fd677947b31e157845395e0edf8f2bc2","target":"graph","created_at":"2026-07-04T17:04:05Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/0706.0736/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report low-temperature resistance measurements in a modulation-doped, (311)A GaAs two-dimensional hole system as a function of applied in-plane strain. The data reveal a strong but anisotropic piezoresistance whose magnitude depends on the density as well as the direction along which the resistance is measured. At a density of $1.6\\times10^{11}$ cm$^{-2}$ and for a strain of about $2\\times10^{-4}$ applied along [01$\\bar{1}$], e.g., the resistance measured along this direction changes by nearly a factor of two while the resistance change in the [$\\bar{2}$33] direction is less than 10% and ha","authors_text":"B. Habib, E. P. De Poortere, J. Shabani, M. Shayegan, R. Winkler","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2007-06-05T20:55:41Z","title":"Anisotropic low-temperature piezoresistance in (311)A GaAs two-dimensional holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0706.0736","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":"sha256:3c2d80db8bebd4fe90949eec93d775c4aa64b18723f6dc2b4ab3eded02a8789f","target":"record","created_at":"2026-07-04T17:04:05Z","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":"6561a58e83ccec3e3a89b236747c324188ae6f13ec72960f1a1425a7aa16b1b5","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2007-06-05T20:55:41Z","title_canon_sha256":"30e9c03560bdf345a9b43fee1dbaa735a244d3d74bebd6bdc2f8ba5762dcbef2"},"schema_version":"1.0","source":{"id":"0706.0736","kind":"arxiv","version":1}},"canonical_sha256":"b3ddedf0e74f3f849128860f9ad9df8ba1a46efd9cebba7f635164cf54784210","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b3ddedf0e74f3f849128860f9ad9df8ba1a46efd9cebba7f635164cf54784210","first_computed_at":"2026-07-04T17:04:05.459645Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:04:05.459645Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VmBSJlXB66Sxshd27zTGEyftc1/XuY+UDmkfkpD3C21Mna59VkDGbcFa4kjXfXIi+fjLHMOF1Zla6TKZCWF4DA==","signature_status":"signed_v1","signed_at":"2026-07-04T17:04:05.459990Z","signed_message":"canonical_sha256_bytes"},"source_id":"0706.0736","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3c2d80db8bebd4fe90949eec93d775c4aa64b18723f6dc2b4ab3eded02a8789f","sha256:0ab05e60d5155ff727c8f23e3719ed38fd677947b31e157845395e0edf8f2bc2"],"state_sha256":"b18eb72973943e1fb6c4e9aa9cd4a94200b5fa37c3006e20e293a68ce6622dc0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VoJDYP+J2tDSLN9zz8Mvz3pTBlZqrAZ/6auv4DauHM7LA0orofv8TX44qzjJWk+oLVXFtUb2BB4Pcwr87p7EBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T21:50:01.709384Z","bundle_sha256":"6822df7607034ad72d6e657c207bd17363a540e904e7348d0ca7f4bd12ee9a65"}}