{"paper":{"title":"Laser-induced demagnetization in a MAX phase (Cr0.5Mn0.5)2GaC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Laser pulses trigger two-step type-II demagnetization in the MAX phase (Cr0.5Mn0.5)2GaC, a signature of its two-dimensional magnetic order.","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"(2) Kirensky Institute of Physics), Alexandra Kalashnikova (1) ((1) Ioffe Institute, Artyom Gorshkov (1), Iaroslav Mogunov (1), Mikhail Rautskii (2), Tatyana Andryushchenko (2)","submitted_at":"2026-05-11T12:43:58Z","abstract_excerpt":"Magnetic MAX phases are nanolaminated metals that combine ceramic-like thermal and mechanical stability with peculiar magnetic ordering, making them attractive for thin-film optoelectronics and spintronics. However, laser-induced magnetization dynamics in MAX phases remains largely unexplored. Here, we investigate laser-induced ultrafast demagnetization in a 40-nm-thick epitaxial film of the magnetic MAX phase (Cr0.5Mn0.5)2GaC, which magnetically orders below ~220 K, using time-resolved magneto-optical Kerr effect spectroscopy. We reveal, that the demagnetization transients exhibit a two-step "},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"the demagnetization transients exhibit a two-step type-II demagnetization - a signature of two-dimensional magnetic systems. The reconstructed spin heat capacity exhibits a weak temperature dependence, accounting for the absence of significant slowing down of demagnetization at elevated temperatures and fluences.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That the observed two-step transients are a direct signature of two-dimensional magnetism and that the three-temperature model fully captures the dynamics without additional channels or material-specific corrections.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"First observation of two-step type-II ultrafast demagnetization in (Cr0.5Mn0.5)2GaC MAX phase film below 250 K, with three-temperature model yielding electron-lattice, spin-lattice and electron-spin couplings and a weakly temperature-dependent spin heat capacity.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Laser pulses trigger two-step type-II demagnetization in the MAX phase (Cr0.5Mn0.5)2GaC, a signature of its two-dimensional magnetic order.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"aa626985c971d9ccc387f674f2d2959b1727960d4e009001915a3da3042e51c2"},"source":{"id":"2605.10483","kind":"arxiv","version":2},"verdict":{"id":"0fcc3125-195d-4375-8031-1dec70cbb80b","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-12T05:18:35.404282Z","strongest_claim":"the demagnetization transients exhibit a two-step type-II demagnetization - a signature of two-dimensional magnetic systems. The reconstructed spin heat capacity exhibits a weak temperature dependence, accounting for the absence of significant slowing down of demagnetization at elevated temperatures and fluences.","one_line_summary":"First observation of two-step type-II ultrafast demagnetization in (Cr0.5Mn0.5)2GaC MAX phase film below 250 K, with three-temperature model yielding electron-lattice, spin-lattice and electron-spin couplings and a weakly temperature-dependent spin heat capacity.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That the observed two-step transients are a direct signature of two-dimensional magnetism and that the three-temperature model fully captures the dynamics without additional channels or material-specific corrections.","pith_extraction_headline":"Laser pulses trigger two-step type-II demagnetization in the MAX phase (Cr0.5Mn0.5)2GaC, a signature of its two-dimensional magnetic order."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.10483/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"claim_evidence","ran_at":"2026-05-20T06:02:00.827024Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"ai_meta_artifact","ran_at":"2026-05-19T14:42:54.072386Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_title_agreement","ran_at":"2026-05-19T11:01:18.045045Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T09:16:11.248505Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"2d28fadd9c20825ec560cb29f63bcfd3540fe996d6fe7706beac7f495d814772"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"130335018b2ea8fb0e1ed5a83ac4357ffc2e84f5d7bf5150f8adc3f3f6bb755d"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}