{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:GE7WPY2VW34VDUHVGTACXHPMXQ","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":"f0a99c3b289e62fb13422fc109f37747b347d03243eed5e62271764549daebe7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-06-21T21:13:17Z","title_canon_sha256":"b0e0a0de48703e4acccf344f7a7389781cddeec88d37523086b48b045eaa3ebc"},"schema_version":"1.0","source":{"id":"1106.4331","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.4331","created_at":"2026-05-18T04:12:44Z"},{"alias_kind":"arxiv_version","alias_value":"1106.4331v1","created_at":"2026-05-18T04:12:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.4331","created_at":"2026-05-18T04:12:44Z"},{"alias_kind":"pith_short_12","alias_value":"GE7WPY2VW34V","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"GE7WPY2VW34VDUHV","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"GE7WPY2V","created_at":"2026-05-18T12:26:28Z"}],"graph_snapshots":[{"event_id":"sha256:1f3ac74376c73336acd827cded798513b31799d6c0892d48047afad6f3d553cc","target":"graph","created_at":"2026-05-18T04:12:44Z","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 theoretically investigate spin-polarized transport in a system composed of a ferromagnetic Scanning Tunneling Microscope (STM) tip coupled to an adsorbed atom (adatom) on a host surface. Electrons can tunnel directly from the tip to the surface or via the adatom. Since the tip is ferromagnetic and the host surface (metal or semiconductor) is non-magnetic we obtain a spin-diode effect when the adatom is in the regime of single occupancy. This effect leads to an unpolarized current for direct bias (V > 0) and polarized current for reverse (V < 0) bias voltages, if the tip is nearby the adatom","authors_text":"A. C. Seridonio, E. Vernek, F. M. Souza, J. C. Egues, P. H. Penteado","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-06-21T21:13:17Z","title":"Scanning Tunneling Microscope Operating as a Spin-diode"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.4331","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":"sha256:1af81cbc020f58905274faff1da563350b36b33fac13321a31f15f1dd2621560","target":"record","created_at":"2026-05-18T04:12:44Z","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":"f0a99c3b289e62fb13422fc109f37747b347d03243eed5e62271764549daebe7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-06-21T21:13:17Z","title_canon_sha256":"b0e0a0de48703e4acccf344f7a7389781cddeec88d37523086b48b045eaa3ebc"},"schema_version":"1.0","source":{"id":"1106.4331","kind":"arxiv","version":1}},"canonical_sha256":"313f67e355b6f951d0f534c02b9decbc14b52986ef5274dffda49fc7c37eb9e2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"313f67e355b6f951d0f534c02b9decbc14b52986ef5274dffda49fc7c37eb9e2","first_computed_at":"2026-05-18T04:12:44.360677Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:12:44.360677Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AvD0enYc/pK2+pNMI9wexpRsIEX03//ntNfjcEi7BCNg77ZMmkBFX/Vt/7iSJZKUyT9PzLpzByc+gBP7SVFEAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:12:44.361372Z","signed_message":"canonical_sha256_bytes"},"source_id":"1106.4331","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1af81cbc020f58905274faff1da563350b36b33fac13321a31f15f1dd2621560","sha256:1f3ac74376c73336acd827cded798513b31799d6c0892d48047afad6f3d553cc"],"state_sha256":"e49089f8f5f0b8595f617d512457c35381de5da2af9d827076f910209450f84e"}