{"paper":{"title":"Point-contact studies of high-temperature superconductor $\\rm YBa_2Cu_3O_{7-\\delta}$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"A.R. Kaul', I.E. Graboi, I.K. Yanson, L.F. Rybal'chenko, N.L. Bobrov, V.M. Kirzhner, V.V. Fisun, Yu.D. Tret'yakov","submitted_at":"2017-01-28T14:40:04Z","abstract_excerpt":"Point-contacts formed by the high-temperature superconductor $\\rm YBa_2Cu_3O_{7-\\delta}$ prepared by cryochemical technique, and a noble metal Ag or Cu) are investigated. The maximum value of the energy gap $\\Delta\\simeq 40~meV$ and the ratio $2\\Delta/kT_c\\simeq 12$ are obtained. It is found that along certain crystallographic axes of the superconductor under investigation, the electrical resistivity $\\lesssim 10^{-5} \\Omega\\cdot cm$."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.08293","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"}