{"paper":{"title":"Dzyaloshinskii-Moriya interaction as a coherence diagnostic for chirality-induced spin selectivity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Coherent chirality-induced spin selectivity generates a giant Dzyaloshinskii-Moriya interaction through molecular bridges while any incoherent version produces none.","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Vishvendra S. Poonia","submitted_at":"2026-05-07T11:01:36Z","abstract_excerpt":"Whether chirality-induced spin selectivity (CISS) reflects coherent SU(2) spin rotation or incoherent spin-dependent filtering is a central unresolved question in molecular spintronics, with implications ranging from asymmetric chemistry to quantum information. We show that these two scenarios are distinguishable by a sharp symmetry criterion on the superexchange interaction mediated by a chiral molecular bridge. Coherent CISS, implemented as a unitary spin rotation of the tunneling electron, generates a giant Dzyaloshinskii-Moriya (DM) interaction with ratio |D|/JH up to 3, which is two order"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"Coherent CISS, implemented as a unitary spin rotation, generates a giant DM interaction with |D|/JH up to 3; incoherent CISS represented by any Hermitian non-unitary spin-diagonal tunneling matrix produces D = 0 identically, proven as a structural theorem.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That incoherent CISS can be faithfully represented by any Hermitian (non-unitary but spin-diagonal) tunneling matrix and that a Lindblad treatment of dissipative spin filtering cannot modify virtual-tunneling-mediated superexchange.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Coherent CISS produces a giant Dzyaloshinskii-Moriya interaction (|D|/JH up to 3) while any incoherent Hermitian spin-diagonal tunneling produces D identically zero, turning DM into a coherence order parameter.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Coherent chirality-induced spin selectivity generates a giant Dzyaloshinskii-Moriya interaction through molecular bridges while any incoherent version produces none.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"9462cf6b2fffcd1fa8b1c9bfed44c95ae85596fce1241d6d25acda9b1e3718b1"},"source":{"id":"2605.06008","kind":"arxiv","version":2},"verdict":{"id":"6a150655-2fe3-4ef2-8f1a-4956aff81b45","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-08T06:30:41.352873Z","strongest_claim":"Coherent CISS, implemented as a unitary spin rotation, generates a giant DM interaction with |D|/JH up to 3; incoherent CISS represented by any Hermitian non-unitary spin-diagonal tunneling matrix produces D = 0 identically, proven as a structural theorem.","one_line_summary":"Coherent CISS produces a giant Dzyaloshinskii-Moriya interaction (|D|/JH up to 3) while any incoherent Hermitian spin-diagonal tunneling produces D identically zero, turning DM into a coherence order parameter.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That incoherent CISS can be faithfully represented by any Hermitian (non-unitary but spin-diagonal) tunneling matrix and that a Lindblad treatment of dissipative spin filtering cannot modify virtual-tunneling-mediated superexchange.","pith_extraction_headline":"Coherent chirality-induced spin selectivity generates a giant Dzyaloshinskii-Moriya interaction through molecular bridges while any incoherent version produces none."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.06008/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"claim_evidence","ran_at":"2026-05-20T13:22:04.347339Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"ai_meta_artifact","ran_at":"2026-05-20T08:39:07.234531Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_title_agreement","ran_at":"2026-05-19T19:31:19.197278Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T13:04:20.026356Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"5d9743ab7885e80543a287444cf4341a06d19c9ee0980ae68d7d416dbb27a3da"},"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"}