{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:V5XQ44SIVITNG3PLXMBFGWWN76","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":"5e708713358bef07f58a4f185c03e1dbfc564dc58233e68e7db204ac6493e3f6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-08-17T18:08:08Z","title_canon_sha256":"677ba5cfc6300fb873db4ac7c4bc04142d816981bd06a2103d686d8cfbffe6da"},"schema_version":"1.0","source":{"id":"1008.2946","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.2946","created_at":"2026-05-18T04:34:47Z"},{"alias_kind":"arxiv_version","alias_value":"1008.2946v1","created_at":"2026-05-18T04:34:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.2946","created_at":"2026-05-18T04:34:47Z"},{"alias_kind":"pith_short_12","alias_value":"V5XQ44SIVITN","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_16","alias_value":"V5XQ44SIVITNG3PL","created_at":"2026-05-18T12:26:15Z"},{"alias_kind":"pith_short_8","alias_value":"V5XQ44SI","created_at":"2026-05-18T12:26:15Z"}],"graph_snapshots":[{"event_id":"sha256:e8488e7cea1a8e1782c86c2862d704618074fb98c02e6a31f651a268f2428f30","target":"graph","created_at":"2026-05-18T04:34:47Z","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":"Using an ultra-low temperature, high magnetic field scanning probe microscope, we have measured electric potentials of a deeply buried two dimensional electron gas (2DEG). Relying on the capacitive coupling between the 2DEG and a resonant tip/cantilever structure, we can extract electrostatic potential information of the 2DEG from the dynamics of the oscillator. We present measurements using a quartz tuning fork oscillator and a 2DEG with a cleaved edge overgrowth structure. The sensitivity of the quartz tuning fork as force sensor is demonstrated by observation of Shubnikov de Haas oscillatio","authors_text":"A. Lal, G. Gervais, J. A. Hedberg, K.W. West, L. Pfeiffer, M. Hilke, P. Gr\\\"utter, Y. Miyahara","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-08-17T18:08:08Z","title":"Low Temperature Electrostatic Force Microscopy of a Deep Two Dimensional Electron Gas using a Quartz Tuning Fork"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.2946","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:fc21c484aced3811cae33bf27015303d2cd6a7f9675b1edbb36bd252b721ad7a","target":"record","created_at":"2026-05-18T04:34:47Z","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":"5e708713358bef07f58a4f185c03e1dbfc564dc58233e68e7db204ac6493e3f6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2010-08-17T18:08:08Z","title_canon_sha256":"677ba5cfc6300fb873db4ac7c4bc04142d816981bd06a2103d686d8cfbffe6da"},"schema_version":"1.0","source":{"id":"1008.2946","kind":"arxiv","version":1}},"canonical_sha256":"af6f0e7248aa26d36debbb02535acdffa9a1bd9d2cfa6d06e9b2d67073c0618b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"af6f0e7248aa26d36debbb02535acdffa9a1bd9d2cfa6d06e9b2d67073c0618b","first_computed_at":"2026-05-18T04:34:47.859885Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:34:47.859885Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PBtmU9nyeBh9N4Ufnbs4dfGgHkq5k7lhT6BCOWofXcL2em6ADLS6eLeexYYHegbqDHaIel9SoczrP81nxF51Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:34:47.860365Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.2946","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fc21c484aced3811cae33bf27015303d2cd6a7f9675b1edbb36bd252b721ad7a","sha256:e8488e7cea1a8e1782c86c2862d704618074fb98c02e6a31f651a268f2428f30"],"state_sha256":"13d73b047cec9037010fc52b84f77f3278dc364d6d09e9c79faea32692765b34"}