{"paper":{"title":"YBa2Cu3O7 grain boundary junctions and low-noise superconducting quantum interference devices patterned by a focused ion beam down to 80 nm linewidth","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"B. B\\\"uchner, D. Koelle, E. Kleisz, J. Nagel, K. B. Konovalenko, M. Kemmler, M. Turad, R. Kleiner, R. Klingeler, R. Werner, S. Menzel","submitted_at":"2010-09-14T13:30:26Z","abstract_excerpt":"YBa$_2$Cu$_3$O$_7$ 24$^\\circ$ (30$^\\circ$) bicrystal grain boundary junctions (GBJs), shunted with 60\\,nm (20\\,nm) thick Au, were fabricated by focused ion beam milling with widths $80\\,{\\rm nm} \\le w \\le 7.8\\,\\mu$m. At 4.2\\,K we find critical current densities $j_c$ in the $10^5\\,{\\rm A/cm^2}$ range %\\dkc{\\#1} (without a clear dependence on $w$) and an increase in resistance times junction area $\\rho$ with an approximate scaling $\\rho\\propto w^{1/2}$. For the narrowest GBJs $j_c\\rho\\approx 100\\,\\mu$V, which is promising for the realization of sensitive nanoSQUIDs for the detection of small sp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.2657","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"}