{"paper":{"title":"Experimental electronic heat capacities of $\\alpha-$ and $\\delta-$Plutonium; heavy-fermion physics in an element","license":"","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.str-el","authors_text":"A. Migliori, J.B. Betts, J.C. Lashley, J. L. Smith, J. Singleton, R. A. Fisher, R.J. McQueeney","submitted_at":"2003-06-10T22:33:08Z","abstract_excerpt":"We have measured the heat capacities of $\\delta-$Pu$_{0.95}$Al$_{0.05}$ and $\\alpha-$Pu over the temperature range 2-303 K. The availability of data below 10 K plus an estimate of the phonon contribution to the heat capacity based on recent neutron-scattering experiments on the same sample enable us to make a reliable deduction of the electronic contribution to the heat capacity of $\\delta-$Pu$_{0.95}$Al$_{0.05}$; we find $\\gamma = 64 \\pm 3$ mJK$^{-2}$mol$^{-1}$ as $T \\to 0$. This is a factor $\\sim 4$ larger than that of any element, and large enough for $\\delta-$Pu$_{0.95}$Al$_{0.05}$ to be c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0306257","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":""},"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"}