{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:IKTUMG2VJIB63PFLKXISREPECY","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":"4795332b83dcc30cb4dc50ab4306f7988a1e5db6a82aa304bd9e38d5340d71bb","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-08-10T20:46:36Z","title_canon_sha256":"01acf4c39ad0ad2b7a6d0c8085f74e6032dc625ff131a1184a6dc979fd2fbe65"},"schema_version":"1.0","source":{"id":"1208.2285","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.2285","created_at":"2026-05-18T02:21:01Z"},{"alias_kind":"arxiv_version","alias_value":"1208.2285v2","created_at":"2026-05-18T02:21:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.2285","created_at":"2026-05-18T02:21:01Z"},{"alias_kind":"pith_short_12","alias_value":"IKTUMG2VJIB6","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"IKTUMG2VJIB63PFL","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"IKTUMG2V","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:0f1be516ecc398ec7dafac72d8464e110d585a01f658a2210a4a2ef92ac0344a","target":"graph","created_at":"2026-05-18T02:21:01Z","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 thermopower ($S$) and electrical resistivity ($\\rho_{2DES}$) measurements in low-density (10$^{14}$ m$^{-2}$), mesoscopic two-dimensional electron systems (2DESs) in GaAs/AlGaAs heterostructures at sub-Kelvin temperatures. We observe at temperatures $\\lesssim$ 0.7 K a linearly growing $S$ as a function of temperature indicating metal-like behaviour. Interestingly this metallicity is not Drude-like, showing several unusual characteristics: i) the magnitude of $S$ exceeds the Mott prediction valid for non-interacting metallic 2DESs at similar carrier densities by over two orders of mag","authors_text":"A. Ghosh, D. Ritchie, F. Sfigakis, G. Jones, H. Beere, J. Griffths, M. Pepper, Vijay Narayan","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-08-10T20:46:36Z","title":"Evidence of Novel Quasiparticles in a Strongly Interacting Two-Dimensional Electron System: Giant Thermopower and Metallic Behaviour"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.2285","kind":"arxiv","version":2},"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:ce7f15174265a4bd8f10c8cde62b0c129a833d1056bb64f09590b67e79e51b52","target":"record","created_at":"2026-05-18T02:21:01Z","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":"4795332b83dcc30cb4dc50ab4306f7988a1e5db6a82aa304bd9e38d5340d71bb","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-08-10T20:46:36Z","title_canon_sha256":"01acf4c39ad0ad2b7a6d0c8085f74e6032dc625ff131a1184a6dc979fd2fbe65"},"schema_version":"1.0","source":{"id":"1208.2285","kind":"arxiv","version":2}},"canonical_sha256":"42a7461b554a03edbcab55d12891e41601e2440fc9718ed958ca24558ead1e22","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"42a7461b554a03edbcab55d12891e41601e2440fc9718ed958ca24558ead1e22","first_computed_at":"2026-05-18T02:21:01.271080Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:21:01.271080Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2zO6CYoFaflGiOv2XFPZWitBApJXhzd7Ryh+rs86cZOp6BJGh3XD2SkE8yVp1aYpWNKG61WKWm0zenGlfiffCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:21:01.271791Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.2285","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ce7f15174265a4bd8f10c8cde62b0c129a833d1056bb64f09590b67e79e51b52","sha256:0f1be516ecc398ec7dafac72d8464e110d585a01f658a2210a4a2ef92ac0344a"],"state_sha256":"89ae994e38577490a80bbbba3baa1341265704f113b5d9fe4f677aaaf90b999c"}