{"paper":{"title":"Hydrostatic-pressure effects on the pseudogap in slightly doped YBa2Cu3O7-{\\delta} single crystals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"A. L. Solovjov, D. M. Sergeyev, L. V. Omelchenko, O. V. Dobrovolskiy, R. V. Vovk","submitted_at":"2017-08-01T14:06:30Z","abstract_excerpt":"The influence of hydrostatic pressure up to P=1.05 GPa on resistivity R, excess conductivity ${\\sigma}'(T)$ and pseudogap ${\\Delta}*(T)$ is studied in slightly doped single crystals of YBa2Cu3O7-${\\delta} (Tc=49.2 K, {\\delta}~ 0.5)$. The critical temperature Tc is found to increase with increasing pressure at a rate dTc/dP = 5.1 K/GPa, while R(300)K decreases at a rate d(ln R)/dP = 0.19% 1/GPa. Near Tc, independently on pressure, the ${\\sigma}'(T)$ is well described by the Aslamasov-Larkin and Hikami-Larkin fluctuation theories, demonstrating a 3D-2D crossover with increase of temperature. The"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.00340","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"}