{"paper":{"title":"Hydrogen trapping and interfacial decohesion at the {\\alpha}-Al2O3(0001)/Fe(110) interface","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Norihito Sakaguchi, Youngseok Hwang, Yuji Kunisada","submitted_at":"2026-06-01T06:11:18Z","abstract_excerpt":"Hydrogen embrittlement and tritium leakage pose critical challenges for fusion reactor structural components, rendering {\\alpha}-Al2O3/Fe interfaces vital as tritium permeation barriers. Here, the thermodynamic stability, trapping energetics, and hydrogen-induced decohesion at the {\\alpha}-Al2O3 (0001)/Fe(110) interface were systematically investigated using density functional theory. Single-hydrogen incorporation reveals that the Fe-hollow site is the most stable trapping region, owing to local free volume and heterogeneous interfacial bonding. Multi-hydrogen analysis demonstrates that trappi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.01748","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.01748/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"}