{"paper":{"title":"Coherent Nonreciprocal Valley Transport in Dirac/Weyl Semimetals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"A single electrostatic barrier lacking inversion symmetry drives coherent nonreciprocal transport in Dirac and Weyl channels through geometry alone.","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Can Yesilyurt","submitted_at":"2026-05-08T03:34:54Z","abstract_excerpt":"Nonreciprocal electronic transport, defined as a directional asymmetry between the forward and backward two-terminal responses, typically requires a built-in inversion-breaking feature of the host material or an applied field, such as magnetic order, magnetochiral coupling, polar lattice distortion, or a superconducting state. Here, we show that a single electrostatic barrier whose shape lacks inversion symmetry can drive coherent nonreciprocal transport in a Dirac or Weyl channel without any of these ingredients. The mechanism is geometric: across a barrier with two qualitatively distinct ref"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"a single electrostatic barrier whose shape lacks inversion symmetry can drive coherent nonreciprocal transport in a Dirac or Weyl channel without any of these ingredients. The mechanism is geometric: across a barrier with two qualitatively distinct refraction interfaces (one vertical and one oblique), forward- and backward-propagating wave packets experience different Fermi-surface-mismatch sequences at the entrance and exit faces.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That the observed nonreciprocity and valley effects arise solely from the geometric sequence of interface types in the wave-packet simulations and are not influenced by unstated numerical artifacts, material-specific scattering, or other unmodeled effects.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"An inversion-asymmetric triangular electrostatic barrier creates coherent nonreciprocal valley transport in Dirac/Weyl channels via distinct refraction sequences at vertical and oblique interfaces.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"A single electrostatic barrier lacking inversion symmetry drives coherent nonreciprocal transport in Dirac and Weyl channels through geometry alone.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"e39f81614049272a8882ad1c07ce3b2a02b9637f4d56f333c5f6c9975e21b795"},"source":{"id":"2605.07189","kind":"arxiv","version":2},"verdict":{"id":"08e39a20-9ab0-4686-86c9-30e8ddbe0de8","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-11T02:33:43.670354Z","strongest_claim":"a single electrostatic barrier whose shape lacks inversion symmetry can drive coherent nonreciprocal transport in a Dirac or Weyl channel without any of these ingredients. The mechanism is geometric: across a barrier with two qualitatively distinct refraction interfaces (one vertical and one oblique), forward- and backward-propagating wave packets experience different Fermi-surface-mismatch sequences at the entrance and exit faces.","one_line_summary":"An inversion-asymmetric triangular electrostatic barrier creates coherent nonreciprocal valley transport in Dirac/Weyl channels via distinct refraction sequences at vertical and oblique interfaces.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That the observed nonreciprocity and valley effects arise solely from the geometric sequence of interface types in the wave-packet simulations and are not influenced by unstated numerical artifacts, material-specific scattering, or other unmodeled effects.","pith_extraction_headline":"A single electrostatic barrier lacking inversion symmetry drives coherent nonreciprocal transport in Dirac and Weyl channels through geometry alone."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.07189/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"doi_title_agreement","ran_at":"2026-05-19T17:01:19.683744Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T12:01:19.616021Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"6231db480358f642a019d98876b51bc411e74cd9e4fe5528f55865976501140d"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"26b563bd95afe59f1e1dc8681f83ecdb0d6f2c8b07d09950962318b72885a053"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}