{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:AMMR2CJLLO42GJTP6CMBGZGYLM","short_pith_number":"pith:AMMR2CJL","schema_version":"1.0","canonical_sha256":"03191d092b5bb9a3266ff0981364d85b08c849fe696c88610dae1ab645341e0f","source":{"kind":"arxiv","id":"0910.1092","version":2},"attestation_state":"computed","paper":{"title":"Observation of the underscreened Kondo effect in a molecular transistor","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mes-hall","authors_text":"Franck Balestro, Nicolas Roch, Serge Florens, Theo A. Costi, Wolfgang Wernsdorfer","submitted_at":"2009-10-06T20:00:14Z","abstract_excerpt":"We present the first quantitative experimental evidence for the underscreened Kondo effect, an uncomplete compensation of a quantized magnetic moment by conduction electrons, as originally proposed by Nozieres and Blandin. The device consists of an even charge spin S = 1 molecular quantum dot, obtained by electromigration of C60 molecules into gold nanogaps and operated in a dilution fridge. The persistence of logarithmic singularities in the low temperature conductance is demonstrated by a comparison to the fully screened configuration obtained in odd charge spin S = 1/2 Coulomb diamonds. We "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"0910.1092","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-10-06T20:00:14Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"6e86a7121969eec58bb87773fc0db4e214a963d7ca433b1014376e972e3fd105","abstract_canon_sha256":"fa2021a1bc0f8901a33e86809b8aded417f5bf8e5a463ef8ec2f4126e84653a3"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:11:26.084150Z","signature_b64":"FzYeaMYsdgt0wttNoJ/6r1c/7CWclChoOrSjVwvj8L2UBDq4ANRT9LxaX+NthzkxxsD8xZyXCyFZa3vGH+hRCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"03191d092b5bb9a3266ff0981364d85b08c849fe696c88610dae1ab645341e0f","last_reissued_at":"2026-05-18T02:11:26.083335Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:11:26.083335Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Observation of the underscreened Kondo effect in a molecular transistor","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mes-hall","authors_text":"Franck Balestro, Nicolas Roch, Serge Florens, Theo A. Costi, Wolfgang Wernsdorfer","submitted_at":"2009-10-06T20:00:14Z","abstract_excerpt":"We present the first quantitative experimental evidence for the underscreened Kondo effect, an uncomplete compensation of a quantized magnetic moment by conduction electrons, as originally proposed by Nozieres and Blandin. The device consists of an even charge spin S = 1 molecular quantum dot, obtained by electromigration of C60 molecules into gold nanogaps and operated in a dilution fridge. The persistence of logarithmic singularities in the low temperature conductance is demonstrated by a comparison to the fully screened configuration obtained in odd charge spin S = 1/2 Coulomb diamonds. We "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0910.1092","kind":"arxiv","version":2},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"0910.1092","created_at":"2026-05-18T02:11:26.083474+00:00"},{"alias_kind":"arxiv_version","alias_value":"0910.1092v2","created_at":"2026-05-18T02:11:26.083474+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0910.1092","created_at":"2026-05-18T02:11:26.083474+00:00"},{"alias_kind":"pith_short_12","alias_value":"AMMR2CJLLO42","created_at":"2026-05-18T12:25:58.837520+00:00"},{"alias_kind":"pith_short_16","alias_value":"AMMR2CJLLO42GJTP","created_at":"2026-05-18T12:25:58.837520+00:00"},{"alias_kind":"pith_short_8","alias_value":"AMMR2CJL","created_at":"2026-05-18T12:25:58.837520+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/AMMR2CJLLO42GJTP6CMBGZGYLM","json":"https://pith.science/pith/AMMR2CJLLO42GJTP6CMBGZGYLM.json","graph_json":"https://pith.science/api/pith-number/AMMR2CJLLO42GJTP6CMBGZGYLM/graph.json","events_json":"https://pith.science/api/pith-number/AMMR2CJLLO42GJTP6CMBGZGYLM/events.json","paper":"https://pith.science/paper/AMMR2CJL"},"agent_actions":{"view_html":"https://pith.science/pith/AMMR2CJLLO42GJTP6CMBGZGYLM","download_json":"https://pith.science/pith/AMMR2CJLLO42GJTP6CMBGZGYLM.json","view_paper":"https://pith.science/paper/AMMR2CJL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0910.1092&json=true","fetch_graph":"https://pith.science/api/pith-number/AMMR2CJLLO42GJTP6CMBGZGYLM/graph.json","fetch_events":"https://pith.science/api/pith-number/AMMR2CJLLO42GJTP6CMBGZGYLM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/AMMR2CJLLO42GJTP6CMBGZGYLM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/AMMR2CJLLO42GJTP6CMBGZGYLM/action/storage_attestation","attest_author":"https://pith.science/pith/AMMR2CJLLO42GJTP6CMBGZGYLM/action/author_attestation","sign_citation":"https://pith.science/pith/AMMR2CJLLO42GJTP6CMBGZGYLM/action/citation_signature","submit_replication":"https://pith.science/pith/AMMR2CJLLO42GJTP6CMBGZGYLM/action/replication_record"}},"created_at":"2026-05-18T02:11:26.083474+00:00","updated_at":"2026-05-18T02:11:26.083474+00:00"}