{"paper":{"title":"Anisotropic metamagnetism and magnetotransport of heavy rare-earth orthorhombic single-crystal TbAlGe","license":"http://creativecommons.org/licenses/by/4.0/","headline":"TbAlGe single crystals show two zero-field antiferromagnetic transitions at 40 K and 8 K plus a cascade of metamagnetic transitions that appear only for fields along the a-axis.","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"D. Graf, D. S. Sokratov, J. A. Horn, J. Paglione, K.E. Avers, N. Brenowitz, P. Saraf, P. Sobel, Ram Kumar, S. Otazo, S. R. Saha, V. Saini, Y. Anand","submitted_at":"2026-04-29T14:54:19Z","abstract_excerpt":"We report a comprehensive investigation of the anisotropic magnetism and magnetic field-induced transitions in single crystals of the orthorhombic system TbAlGe, a member of the topological RAlGe (R = rare-earth) family with the highest ordering temeprature in the RAlX (X = Si, Ge) series. With a single rare earth site with triangular coordination in its Cmcm orthorhombic unit cell, TbAlGe harbors complex magnetic interactions that yield two antiferromagnetic transitions at 40 K and 8 K in zero field, and a rich cascade of metamagnetic transitions that only appear for fields directed along the"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"TbAlGe harbors complex magnetic interactions that yield two antiferromagnetic transitions at 40 K and 8 K in zero field, and a rich cascade of metamagnetic transitions that only appear for fields directed along the crystallographic a-axis, establishing TbAlGe as a compelling platform for exploring tunable magnetic semimetal physics.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That the observed transitions and their directional selectivity arise intrinsically from the interplay between localized 4f moments and itinerant electrons rather than from sample-specific defects, domain effects, or measurement geometry artifacts.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"TbAlGe exhibits antiferromagnetic transitions at 40 K and 8 K with a cascade of a-axis-only metamagnetic transitions mapped into a phase diagram up to 41.5 T, highlighting localized 4f magnetism interacting with itinerant topology.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"TbAlGe single crystals show two zero-field antiferromagnetic transitions at 40 K and 8 K plus a cascade of metamagnetic transitions that appear only for fields along the a-axis.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"786dd99cba4d781a387f87accc269df0e8496a15d719f22e362e68a62e9a3d18"},"source":{"id":"2604.26758","kind":"arxiv","version":1},"verdict":{"id":"112dbb9c-35bd-4d69-9dec-7a1983f75365","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-07T11:26:23.631625Z","strongest_claim":"TbAlGe harbors complex magnetic interactions that yield two antiferromagnetic transitions at 40 K and 8 K in zero field, and a rich cascade of metamagnetic transitions that only appear for fields directed along the crystallographic a-axis, establishing TbAlGe as a compelling platform for exploring tunable magnetic semimetal physics.","one_line_summary":"TbAlGe exhibits antiferromagnetic transitions at 40 K and 8 K with a cascade of a-axis-only metamagnetic transitions mapped into a phase diagram up to 41.5 T, highlighting localized 4f magnetism interacting with itinerant topology.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That the observed transitions and their directional selectivity arise intrinsically from the interplay between localized 4f moments and itinerant electrons rather than from sample-specific defects, domain effects, or measurement geometry artifacts.","pith_extraction_headline":"TbAlGe single crystals show two zero-field antiferromagnetic transitions at 40 K and 8 K plus a cascade of metamagnetic transitions that appear only for fields along the a-axis."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2604.26758/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"doi_compliance","ran_at":"2026-05-19T19:51:51.985796Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"51fac3515c7137cc6542da5e6ccc1a57f9cbbbbfa9357210287b27eb122c998d"},"references":{"count":52,"sample":[{"doi":"","year":null,"title":"Further, the chemical composition is verified using a scanning electron microscope (SEM) with an energy-dispersive X-ray spectroscopy (EDS)","work_id":"","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2022,"title":"B. A. Bernevig, C. Felser, and H. Beidenkopf, Progress and prospects in magnetic topological materials, Nature 603, 41 (2022)","work_id":"","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1977,"title":"K. H. J. Buschow, Intermetallic compounds of rare-earth and 3d transition metals, Reports on Progress in Physics 40, 1179 (1977)","work_id":"","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2009,"title":"Pfleiderer, Superconducting phases of f -electron com- pounds, Rev","work_id":"","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2022,"title":"W. Cao, N. Zhao, C. Pei, Q. Wang, Q. Zhang, T. Ying, Y. Zhao, L. Gao, C. Li, N. Yu, L. Gu, Y. Chen, K. Liu, and Y. Qi, Pressure-induced superconductiv- ity in the noncentrosymmetric weyl semimetals La","work_id":"","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":0,"snapshot_sha256":"dd48e1fdfd02a0652af0e38d09addd498005e6d81cd68c80262de3d0036da928","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"}