{"paper":{"title":"Room Temperature Anisotropic Photoresponse in Low-Symmetry van der Waals Semiconductor CrPS$_4$","license":"http://creativecommons.org/licenses/by/4.0/","headline":"CrPS4 shows strong room-temperature linear dichroism reaching 60 in photocurrent with threefold axis dependence.","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"C\\'edric A. Cordero-Silis, Daniel Vaquero, Harshan Madeshwaran, Marcos H. D. Guimar\\~aes, Teresa L\\'opez-Carrasco","submitted_at":"2026-04-07T08:14:12Z","abstract_excerpt":"The crystalline and optical anisotropy of low-symmetry two-dimensional (2D) materials can enable strong dichroic responses, enhancing polarization contrast for photonic and optoelectronic devices. Here, we unveil pronounced optical and optoelectronic anisotropy in chromium thiophosphate CrPS$_4$ arising from the strong coupling between light polarization and its intrinsic crystal symmetry. Linearly polarized reflectivity and scanning photocurrent measurements in the 1.37-2.48 eV range reveal a robust dichroic response. The linear dichroism in reflection RLD reaches ~50, while in photocurrent P"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"Linearly polarized reflectivity and scanning photocurrent measurements in the 1.37-2.48 eV range reveal a robust dichroic response. The linear dichroism in reflection RLD reaches ~50, while in photocurrent PCLD it increases to ~60, with a sign reversal of the RLD between 1.6-1.8 eV... a 3-fold enhancement is obtained along the b-axis compared to the a-axis.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The anisotropic responses are attributed to the interaction between polarized light and Cr^{3+} d-orbital T1 and T2 transitions; this attribution is plausible but not directly proven by the measurements alone and could be affected by other contributions such as defects or substrate effects.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"CrPS4 displays room-temperature linear dichroism reaching RLD ~50 and PCLD ~60 with sign reversal and 3-fold axis-dependent photocurrent enhancement arising from its crystal symmetry and Cr3+ orbital transitions.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"CrPS4 shows strong room-temperature linear dichroism reaching 60 in photocurrent with threefold axis dependence.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"49894c73aebc472dcd2a75bca422402b6c2de7e2250d5e5f264a2c8e2e370736"},"source":{"id":"2604.05572","kind":"arxiv","version":1},"verdict":{"id":"ac6625fc-86bc-4977-baed-d59194eb95b3","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-10T19:14:35.300456Z","strongest_claim":"Linearly polarized reflectivity and scanning photocurrent measurements in the 1.37-2.48 eV range reveal a robust dichroic response. The linear dichroism in reflection RLD reaches ~50, while in photocurrent PCLD it increases to ~60, with a sign reversal of the RLD between 1.6-1.8 eV... a 3-fold enhancement is obtained along the b-axis compared to the a-axis.","one_line_summary":"CrPS4 displays room-temperature linear dichroism reaching RLD ~50 and PCLD ~60 with sign reversal and 3-fold axis-dependent photocurrent enhancement arising from its crystal symmetry and Cr3+ orbital transitions.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The anisotropic responses are attributed to the interaction between polarized light and Cr^{3+} d-orbital T1 and T2 transitions; this attribution is plausible but not directly proven by the measurements alone and could be affected by other contributions such as defects or substrate effects.","pith_extraction_headline":"CrPS4 shows strong room-temperature linear dichroism reaching 60 in photocurrent with threefold axis dependence."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.05572/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":1,"sample":[{"doi":"","year":2015,"title":"Taniguchi, T.; Levitov, L. S.; Jarillo-Herrero, P. Hot Carrier–Assisted Intrinsic Pho- toresponse in Graphene.Science2011,334, 648–652. (S7) Hidding, J.; Cordero-Silis, C. A.; Vaquero, D.; Rompotis, K","work_id":"22c499e9-c321-4fcd-b73c-8249810768ab","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":1,"snapshot_sha256":"cd666cb06fb6a14bbd5785ad2a509724e32d237cc783577ed3da243d4e4abbb5","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"be80ec3d2ac40f084f18dcc31101a8301e3b4fe0f358de0076bf2b61aa3f5c0b"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}