{"paper":{"title":"Resonant optical cooling of nuclear spins in case of strong Knight field of photoexcited electrons","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Strong Knight field from photoexcited electrons lets resonant nuclear cooling produce an Overhauser field that reshapes the Hanle curve of carrier spin polarization.","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Kirill Kavokin","submitted_at":"2026-05-14T15:09:32Z","abstract_excerpt":"Resonant cooling of the nuclear spin system of a semiconductor by spin-polarized charge carriers under pumping with helicity-modulated polarized light is considered theoretically. It is shown that in the case of strong Knight field of charge carriers, exceeding local fields of the dipole-dipole interaction of nuclear spins, the Overhauser field arising as a result of resonant cooling can considerably modify the overall shape of magnetic-field dependences of charge carrier spin polarization, experimentally observed as the Hanle effect."},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"in the case of strong Knight field of charge carriers, exceeding local fields of the dipole-dipole interaction of nuclear spins, the Overhauser field arising as a result of resonant cooling can considerably modify the overall shape of magnetic-field dependences of charge carrier spin polarization, experimentally observed as the Hanle effect","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The Knight field of charge carriers exceeds local fields of the dipole-dipole interaction of nuclear spins, allowing resonant cooling to produce a dominant Overhauser field","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Resonant nuclear spin cooling under strong Knight field produces an Overhauser field that modifies the Hanle effect shape.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Strong Knight field from photoexcited electrons lets resonant nuclear cooling produce an Overhauser field that reshapes the Hanle curve of carrier spin polarization.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"250bebd39d432656fc3a5b37b71b7235c85946ac4a02dc8f45e907fb79f1b2d3"},"source":{"id":"2605.14934","kind":"arxiv","version":1},"verdict":{"id":"ffce2c97-5a81-43c5-8b18-0bf4dce809bd","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-15T03:14:09.174065Z","strongest_claim":"in the case of strong Knight field of charge carriers, exceeding local fields of the dipole-dipole interaction of nuclear spins, the Overhauser field arising as a result of resonant cooling can considerably modify the overall shape of magnetic-field dependences of charge carrier spin polarization, experimentally observed as the Hanle effect","one_line_summary":"Resonant nuclear spin cooling under strong Knight field produces an Overhauser field that modifies the Hanle effect shape.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The Knight field of charge carriers exceeds local fields of the dipole-dipole interaction of nuclear spins, allowing resonant cooling to produce a dominant Overhauser field","pith_extraction_headline":"Strong Knight field from photoexcited electrons lets resonant nuclear cooling produce an Overhauser field that reshapes the Hanle curve of carrier spin polarization."},"references":{"count":6,"sample":[{"doi":"","year":1984,"title":"Optical Orientation, edited by F. Meier and B. P. Zakharchenya (North-Holland, Amsterdam, 1984), Chapter 5 by I.A.Merkulov and V.G.Fleisher","work_id":"25221cf7-7e5e-4dba-aa53-c8b35db599fd","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2014,"title":"A., Greilich, A., Yakovlev, D","work_id":"fbddaba7-43f5-4ac0-ad03-26405045eb94","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1982,"title":"I.A.Merkulov and M.N.Tkachuk, Resonant cooling of the spin system of a superconductor lattice nuclei following optical orientation of the electrons, Sov Phys JETP 56, 342 (1982)","work_id":"b11e90c6-0770-4312-a90a-23c53324cf41","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1980,"title":"Kalevich, V. K., V. D. Kul’kov, and V. G. Fleisher, Optical cooling of the spin system of nuclei in a semiconductor lattice in a rotating system of coordinates, Sov. Phys. Solid State 22, 703 (1980)","work_id":"622c8bd7-34c5-4aff-bcc2-f4237606f6f7","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2026,"title":"M. Kotur, P.S. Bazhin ,K.V. Kavokin ,N.E. Kopteva ,D.R. Yakovlev, D. Kudlacik, and M. Bayer, Dynamic polarization of nuclear spins by optically oriented electrons and holes in lead halide perovskite s","work_id":"deacdb8d-5062-44d0-a98d-f71af57dbcbd","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":6,"snapshot_sha256":"0310f79cc3baa84247325b205f63c79aa060b36f8c23cd1f10c3de4300e29d8d","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"b69404d0b390e6e0100af544dce9e710a43f55aebac9829617a907a96b894c36"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}