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Kachkachi","submitted_at":"2026-06-25T17:55:57Z","abstract_excerpt":"We compute the specific absorption rate of a uniaxial single-domain nanomagnet driven by an alternating magnetic field by two methods: i) direct numerical integration of the stochastic (Langevin) Landau--Lifshitz--Gilbert equation (the LLL approach), and ii) linear response theory (LRT) based on the Debye susceptibility with the N\\'eel relaxation time $\\tau_\\mathrm{N}$. We first analytically show that both methods are equivalent for small magnetic field amplitude, and then compute their deviation $\\Lambda\\equiv \\mathrm{SAR}_{\\mathrm{LLL}}/\\mathrm{SAR}_{\\mathrm{LRT}}-1$ as a function of the mag"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2606.27351","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2026-06-25T17:55:57Z","cross_cats_sorted":[],"title_canon_sha256":"9a95f0cb5a8a62d13a215371bf6d7b0c3eef38cf0432f0a295b341c5ca26b1f6","abstract_canon_sha256":"594c79362211d10816eb0a6e3154e1ce2f7bd0acebe400c1d70526d7459d881f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-26T01:16:19.569599Z","signature_b64":"afRUeMx3dORWqpPckAnWDkDApjj4NPmQvC9AmzHPjAc7RDSxq6IehA0SOnv6OKRB8lA/TJDeNsf4LqSow82qAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"93fe94b5bb9dd94a7d18c1a30998e255c2ede33097d8705df5005939b8c0c000","last_reissued_at":"2026-06-26T01:16:19.569097Z","signature_status":"signed_v1","first_computed_at":"2026-06-26T01:16:19.569097Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Specific absorption rate of uniaxial single-domain nanomagnets: stochastic spin dynamics versus linear response theory","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"H. 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