{"paper":{"title":"Hierarchical spectral inhomogeneity in photoluminescence of a twisted MoSe2/WSe2 heterobilayer moir\\'e superlattice revealed by hyperspectral mapping","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Hyperspectral mapping shows MoSe2/WSe2 moiré photoluminescence organizes into three spectral families forming micron-scale domains, each retaining unresolved dense peaks.","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Daichi Kozawa, Kenji Watanabe, Nurul Fariha Ahmad, Ryo Kitaura, Takashi Taniguchi, Yuto Urano","submitted_at":"2026-04-18T09:45:36Z","abstract_excerpt":"Low-temperature photoluminescence from MoSe2/WSe2 moire superlattice often consists of a broad interlayer emission background with dense, narrow peaks, making microscopic line-by-line assignment difficult. Here, we use hyperspectral photoluminescence mapping and peak-decomposition-free spectral analyses to determine how this spectral complexity is organized in space. A 20 x 20 map acquired with a 400 nm pitch reveals three dominant spectral families that form contiguous real-space domains. Feature-wise spatial correlation analysis and whole-spectrum similarity yield a characteristic micron-sca"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"These results establish hierarchical inhomogeneity as an organizing principle of MoSe2/WSe2 moiré superlattice photoluminescence.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That the identified spectral families and their spatial correlations reflect intrinsic material properties rather than artifacts from optical resolution limits, sample inhomogeneity, or the specific peak-feature extraction methods used.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Hyperspectral mapping shows hierarchical spectral inhomogeneity in MoSe2/WSe2 moiré superlattice photoluminescence, with contiguous micron-scale spectral domains and local unresolved complexity.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Hyperspectral mapping shows MoSe2/WSe2 moiré photoluminescence organizes into three spectral families forming micron-scale domains, each retaining unresolved dense peaks.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"064c5f90aed115df14e71995bbe1f242ee5085bcc05d6b9fda28d551d149e23f"},"source":{"id":"2604.16939","kind":"arxiv","version":2},"verdict":{"id":"6317cacd-b3a2-4d21-97df-cb3487467379","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-10T06:43:13.793961Z","strongest_claim":"These results establish hierarchical inhomogeneity as an organizing principle of MoSe2/WSe2 moiré superlattice photoluminescence.","one_line_summary":"Hyperspectral mapping shows hierarchical spectral inhomogeneity in MoSe2/WSe2 moiré superlattice photoluminescence, with contiguous micron-scale spectral domains and local unresolved complexity.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That the identified spectral families and their spatial correlations reflect intrinsic material properties rather than artifacts from optical resolution limits, sample inhomogeneity, or the specific peak-feature extraction methods used.","pith_extraction_headline":"Hyperspectral mapping shows MoSe2/WSe2 moiré photoluminescence organizes into three spectral families forming micron-scale domains, each retaining unresolved dense peaks."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.16939/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}